COVID-19 Blog
December 27, 2021
The CDC released new guidelines for Isolation and Quarantine Periods for the general population. It should be noted that Isolation is for those who test positive for COVID and Quarantine is for people with close contact with someone who has tested positive.  DO NOT test for COVID immediately after close contact with someone with COVID-19.  Wait until day 5 because it takes time for virus to incubate and show up on a test.  However infected people are most infectious 2 days before any symptoms of COVID and the first 5 days after showing symptoms of infection.  This is the rationale for the following guidelines.
If you Test Positive for COVID-19, regardless of vaccination status:
  • Isolate from others and Stay home for 5 days.  Day 0 is the date of the symptoms start or test positive .  Day 1 is the following day.  If you develop symptoms after your positive test, Day 0 resets to the first day of symptoms.  Ex. Monday's test is positive, but symptoms start on Wednesday then Wednesday becomes Day 0.  If you start symptoms of being sick then test positive, Day 0 is still the day symptoms started.
  • If you have no symptoms and feel well after 5 days, you can leave your house.  This includes people who test positive for COVID-19 but remain asymptomatic.
  • Continue to wear a mask around others for 5 more days.

If are Exposed to Someone with COVID-19 and have been boosted or completed the primary series of Pfizer or Moderna within the last 6 months or the primary series of J&J vaccine in the last 2 months:

  • Wear a mask around others for 10 days
  • Test on day 5 if you have no symptoms.  If you develop symptoms, get a test immediately and stay home.

If are Exposed to Someone with COVID-19 and completed the Pfizer or Moderna two doses more than 6 months ago and are not boosted or the J&J vaccine more than 2 months ago or unvaccinated:

  • Quarantine from others and Stay home for 5 days.  After that wear a mask around others for 5 additional days
  • Test on day 5.  If you develop symptoms, get tested.
December 12, 2021
Preliminary data regarding the Omicron variant sugguests that it more infectious than the Delta variant, but thus far it has not caused more serious illness than other strains.   As of December 10, there have been 43 cases detected in the USA and only one-third of those infected had traveled internationally in the previous 2 weeks before becoming Covid positive.  This means that the other two-thirds were infected by person to person contact. 
Of the 43 Omicron cases, 34 were fully vaccinated,14 had received booster doses as well, and 6 had previously been infected with Covid.  Only one of the infected individuals needed hospitalization and none have died.  This sample size is too small to draw accurate conclusions, but it gives us some idea about how the Omicron variant be able to overcome vaccination and immunity from previous infections.  We will know more in the upcoming weeks. 
November 28, 2021
The following is from CNN
"The new variant, known as Omicron, was first identified in South Africa, although it is unclear whether it originated there or whether it was brought into the country from elsewhere in the region.What scientists do know is that the virus is much more likely to mutate in places where vaccination is low and transmission high.
"It has probably emerged in another country and has been detected in South Africa, which has very, very good genomic sequencing capacity and capability ... it might well be a consequence of an outbreak, probably in some parts of sub-Saharan Africa, where there's not a huge amount of genomic surveillance going on and vaccination rate is low," Michael Head, a senior research fellow in global health at the University of Southampton, told CNN in a phone interview." Head said the emergence of new variants was "a natural consequence of being too slow to vaccinate the world."
It is too early to tell how effective the current vaccines approved by the FDA in the USA will be against the Omicron variant.  This new variant is said to have 30+ mutations in the Spike Protein alone when compared to the original strain that the vaccines were developed.  Pfizer, Moderna, and Janssen are all testing the variant against antibodies from vaccinated individuals.  While vaccines may not be as effective against the Omicron variant as the original strain, getting the vaccines with boosters, wearing masks, and avoiding areas with large groups of people are our best mitigating resources. Time will tell. 
November 21,2021
Coronavirus Vaccine Boosters were just ammended by the FDA and CDC for both the Moderna and Pfizer-BioNTech COVID-19 vaccines authorizing use of a single booster dose for all individuals 18 years of age and older after completion of primary vaccination with any FDA-authorized or approved COVID-19 vaccine.
Prior to today’s authorizations, a single booster dose of the Moderna and Pfizer-BioNTech COVID-19 vaccines was authorized for administration to individuals 65 years of age and older, individuals 18 through 64 years of age at high risk of severe COVID-19 and individuals 18 through 64 years of age with frequent institutional or occupational exposure to SARS-CoV-2. Today’s action expands the use of booster doses of both vaccines to include all individuals 18 years of age and older at least six months after completion of the primary vaccination series of the Moderna COVID-19 Vaccine or Pfizer-BioNTech COVID-19 Vaccine or at least two months after completion of primary vaccination with the Janssen COVID-19 Vaccine.

It's important to note that after 2 weeks following the 2nd doses of Moderna and Pfizer vaccines, the vaccine stimulates your acquired immune system to recognize the Spike -Protein of the Coronavirus and kill the virus.  These vaccine provide around 93% efficacy against becoming Covid positive.  Janssen's one dose vaccine is 72% effective against symptomatic diesase in the US alone. The circulating antibodies titer wans over time and the efficacy decreases with each month.  This is why breakthrough infections for people who have been fully vaccinated increases over time.   However, fully vaccinated people's immune system will increase the production of antibodies when they become infected.   This will result in faster recovery, less severe illness, not requiring hospitialization, and not dying.

Getting a booster vaccine (3rd dose of Moderna or Pfizer Or 2nd dose of Janssen) renews the efficacy of the vaccine to about 93%.  Note that after getting fully vaccinated against COVID,  the booster can be any of these vaccines. In other words, if you received 2 doses of Moderna, you could get a booster of Pfizer or Janssen.  All three FDA approved vaccines function similar in using the body's machinery to produce a Spike Protein ( and not the full virus). 

October 9, 221
As I am continuing to interview and try-out new RDAs and hygienists,  I am told that our office is the best they have seen regarding infection control standards and following appropriate protocols against COVID-19.  In fact, I have had a couple of people refuse to work in my office because our standards are so high.  One hygienist insisted on using the ultrascaler on everyone and the RDA didn't want to wear a face shield, KN95 mask, or follow our office protocols. 
Would you want to be in a treatment room where the office staff and dentist didn't do everything they could to reduce aerosols from potentially infectious patients just before you?   I am hearing some dental offices go back to using ultrasonic scalers for all cleanings, no isolation system, extraoral vaccum system,  HEPA air purifiers or any additional precautions because they are expensive to have and take extra time to use and/or disinfect.   Unfortunately, that's why we have to charge an infection control fee for any aerosol generating procedure.  Until I can be certain that it's not necessary, I will continue to be cautious about my patients' and staffs' safety. 
July 23, 2021
Thankfully our patients have been following the masking and infection control protocols.  I really appreciate that!   While there continues to be changes to our office as developments occur, we are doing our best to adapt and make sensible decisions.
As of July 12, I had one of my RDAs go on maternity leave and therefore am short-staffed.   Although we have been looking for additional staff members over the last several weeks, it's been tough.  There is definitely a shortage of qualified staff.  Just as you may have heard how the housing market has desperate people bidding up prices and offering incentives for sellers, dental office are have been doing the same trying to attract new staff members.   Please be patient with us.  There has been a tremedous influx of people in my office for dental care and my staff and I are sometimes overwhelmed with the demand.   From my understanding both of these issues are common in dental offices across the country.
If you have not been vaccinated, please get vaccinated.  The Delta variant (and soon the Lambda variant) are more than 3-4 times more contagious than the original strain of SARS-CoV-2 and creating surges of cases in unvaccinated people and areas of the country.   The evidence is pretty clear that vaccination is your best chance you have of not getting Covd-19 and the mRNA technology of the Moderna and Pfizer vaccines have shown themselves to be safe.  FYI, the mRNA is destroyed shortly after it enters your body and starts the machinery to produce the spike protein (not the virus).   When your body's immune system sees this protein, it produces antibodies to destroy the spike protein.   Then with the 2nd vaccine, your immune system is sensitized to manufacture large quantities of the antibody fast.  It is normal to have fatique, muscle pain, body aches, soreness at the injection site, etc for a few days as your immune system detects the spike protein in your body.  Allergies to the vaccine are possible, extremely rare, and are mostly related to the PEG (Polyethylene Glycol) oil droplet designed to protect the mRNA from breaking down too fast.    I know the details about these vaccines partially because I took the course work to be able to administer these vaccines.
The main reasons to get vaccinated is to NOT die, require hospitalization, or get long haulers syndrome (COVID-19 health issues that either don't go away or take several weeks/months to resolve).   Also the more unvaccinated people there are, the more likely more variants (mutated strains of  SARS-CoV-2 ) will result.  Each strain is more contagious and slightly different which will eventually make the original vaccines less effective.  You might be thinking that you have been safe thus far without a vaccine or you are healthy enough to survive it if you get it.  With increasingly infectious strains mutating, the odds are you will eventually get it and how severe it is will be dependent on the infectivity of the virus strain and how quickly your immune system can kill it.  Note that deciding to not get vaccinated is not just an individual decision but will affect other people whether you like it or not!
July 4, 2021
Happy 4th of July Everyone!  As some of you will be celebrating our Independence Day with friends or relatives.  Please be cautious.  While California has lifted most of Covid-19 restrictions and the CDC says that we don't have to continue to social distance or wear masks with people who have been vaccinated, the WHO (World Health Organization) states that people should continue to wear masks indoors and "Vaccine alone won't stop community transmission."  Dr Mariangela Simao,WHO assistant director general, stated that, people need to continue to use masks consistently, be in ventilated spaces, practice hand hygiene and physical distancing and avoid crowds.
The rise the Delta variant of SARS-CoV-2 that causes COVID-19 makes it even more urgent that we use all tools at our disposal, Dr Tedros Adnanom Ghebreyesus, WHO director-general, told the press on Friday according to the New York Times.  The Delta variant is  responsible for 25% of new infections in the US last week and  the percentage is rising as it is destined to become the dominant strain in the country according to the CDC. 
Besides social distancing, avoiding crowds, and wearing masks, vaccines are still the best form of protection against the Delta variant and other COVID-19 viruses.  A Public Health England analysis showed that at least two of the vaccines are effective against Delta. The Pfizer-BioNTech vaccine was 88% effective against symptomatic disease and 96% effective against hospitalization from Delta in the studies, while Oxford-AstraZeneca (which is not an mRNA vaccine) was 60% effective against symptomatic disease and 93% effective against hospitalization. The studies tracked participants who were fully vaccinated with both recommended doses.  Both Moderna and Johnson & Johnson have stated that their vaccines are highly effective against Delta and other variants noting only a slight decrease in neutralizing titers as compared to the original strain. 
June 11, 2021
I have been reading and seeing in the news that there is much confusion regarding who's Covid-19 restrictions and guidelines are people supposed to follow.  We have CDC guidelines, federal guidelines, state guidelines, county guidelines, and business specific organizations with recommendations.   WHO IS THE FINAL AUTHORITY? 
For example, Governor Newsom has announced that California is lifting pandemic restrictions orders as the state moves to Beyond the Blueprint and the CDC has stated that vaccinated people don't have to mask indoors or outdoors.   However, The CDPH (California Department of Public Health) states (on the weblink below) that the healthcare facilitiies (including dental office) are to continue having patients & staff wear masks.
The California Dental Association (CDA) sent a news release to all dental office in CA that in light of the new recommendations from CDC there will be changes, but the soonest these changes will occur is the end of June.   In the meantime, dental offices are to continue to follow the latest temporary standards approved November 2020.  While some news outlets may have political agendas, I trust CDA's recommendations and know that they are based on science and take into account all of the different authorities.   
No matter what changes occur, I expect that I will have patients that are upset.  On June 15th, some people will walk into my office without masks and expect things to be similar to pre-pandemic protocols.  Then we will have to inform them that the standards for dental office hasn't changed yet.   Later when the recommendations change, patients who are trying to be super cautious will be upset and not feel safe as the restrictions are lifted and  our office is trying to make the appropriate changes.
Rest assured that I read and look at the news and changes daily.   I am very well informed about COVID-19 news, transmission rates, and other related information.  My personal position is that I will take steps cautiously and try to make decisions that make sense from a scientific point of view.  I have your interest and my staff's safety at heart.  
May 25, 2021
An Ohio State University study published in the Journal of Dental Research found that 0.1% to 1.2% of microbes in aerosols distributed throughout the room during dental procedures were from saliva, while 78% were from irrigants. The findings suggest dental procedures pose a low risk for transmission of SARS-CoV-2, and support results of a study in the Journal of the American Dental Association, which found a COVID-19 positivity rate of less than 1% among dentists, ADA News reports. "These findings should help us open up our practices, make ourselves feel safe about our environment and, for patients, get their oral and dental problems treated," said Purnima Kumar, D.D.S., Ph.D., a member of the ADA Council on Scientific Affairs and the study's senior author.
May 12, 2021
I purchased an Aegis VacuStation Extraoral Vaccum System to reduce aerosols in my treatment rooms when isolation masks cannot be used.  Below is a photo of it and a Youtube link showing how it works.  We still have HEPA air purifiers in the treatment rooms as well.
April 22, 2021
Everyone in United States aged 16 years and above is now eligible for COVID-19 vaccination, the U.S. Centers for Disease Control and Prevention (CDC) stated as of Monday.  Options to get the vaccine include the following:
  • Othena App-includes Anaheim Convention Center, Soka University, OC Fair grounds, & Disneyland
  • Kaiser- for Members and nonmembers call 1-833-KP4CARE (1-833-574-2273) (TTY 711) for appointments at Kaiser Permanente facilities.
  • CVS , Rite Aid, & Sav-ons
  • Costco
  • UCI
  • Other Pharmacies or Locations
Most of these locations can be contacted directly by phone or online to make appointments directly.  Note that in Southern CA, the Super POD vaccine sites will be phased out as the number of local vaccination locations increases.
The  FDA has approved Emergency Use Authorization for Pfitzer, Moderna, and Johnson & Johnson vaccines in the United States .Each location may differ in the availablilty of the type of vaccine and whether it's a first or second dose.  Pfitzer and Modern utilize mRNA encapsulated in an oil droplet (PEG) and require 2 vaccines for full vaccination 21 and 28 days apart respectively.  Johnson & Johnson is a single vaccine dosage utilizing the adenovirus as the carrier.
February 5, 2021
I received my 2nd Moderna vaccine at the Disneyland Super POD this afternoon. Below is some info for those trying to schedule an appointment for a vaccine at this location.
  • If you are using the Othena app and need a particular day or time, you have to keep checking it 4 days before you want to make the appointment. Some days it shows no appointment and other days or times it will show availability for 3-4 days ahead. There is no set time when they release the appointments.
  • Look at the available locations, name of the vaccine, and available times. Sometimes, it specifically lists a particular vaccine for a location. Ex. Soka University-Pfizer If it doesn't list the name of the vaccine, they may have Pfizer or Moderna (Disneyland had both)
  • The address for the Disneyland Super POD is 300 W Katella. The entrance is on Katella and S. Clementine (across the street from the Cheesecake Factory). Apple Maps took me to the wrong entrance off of S. Anaheim Blvd for volunteers.
  • When you arrive, have your ID and app appointment open on your phone to show the volunteers to enter the parking lot and for them to direct you which line to go to. There are different lines for 1st and 2nd vaccines and Pfizer and Moderna vaccines. If you receiving your 2nd vaccine, they will also ask for your vaccine card.
  • Click "I'm Here" on the Othena app. At check-in they will scan the barcode on your app, then direct you to the next station to answer the questionaire.
  • There are 6-7 tents with 12 stations each for receiving the vaccine. After receiving the vaccine, you will directed to another tent to sit and wait for 15 min before leaving.
I have heard that you can schedule an appointment with Kaiser for vaccines even if you are not a Kaiser patient. Also CVS will be offering the vaccine soon. Good luck!


January 13, 2021

Are dentists able to give a COVID-19 vaccine during your cleaning and check up visits?

The CA Dental Association just had a virutal meeting to discuss the answer to that questions.  This is based on the California's Department of Consumer Affairs approving a public health emergency waiver that would allow dentists to administer vaccines to those 16 and older on January 4th, 2021.

The answer to that question at the current time is NO!  These are the reasons

  1. The vaccine requires a lot of paperwork and record keeping (like a pharmacy or hospital) that dentist are not accustomed to doing.  This includes pre vaccine questionaires, temperature monitioring of the vaccines,  lot numbers of vaccines, dosage amounts, date, time, where and how administered, etc.
  2. The vaccine requires a specific temperature ranges and storage/handling documentation to insure the vaccine remains effective.  Moderna's COVID‑19 Vaccines multiple-dose vials need to be stored frozen between -25º to -15ºC (-13º to 5ºF).   Then the Moderna COVID‑19 Vaccine can be refrigerated between 2° to 8°C (36° to 46°F) for up to 30 days prior to first use.  The Pfizer vaccine requires specially designed,temperature-controlled thermal shippers utilizing dry ice to maintain recommended storage temperature conditions of -70°C±10°C for up to 10 days unopened.  The dry ice has to replenished every 5 days.  Before mixing, the Pfizer vaccine may be stored in the refrigerator between 2°C and 8°C (36°F and 46°F) for up to 120 hours (5 days).   Dentists do not have the facilities to keep the vaccines at these specifications. 
  3.  The doctor and facility has to have the training and equipment able to handle several severe allergic reactions.  This includes epi pens, AEDs, ventilation devices, etc.  

Dentist's office are not equipped for any of the above and therefore dentist can volunteer at PODs to give the vaccine, but will not likely be able to administer these vaccines in their dental offices.


January 8, 2021

As an essential heathcare worker, I just received my first dose of the Moderna COVID-19 vaccine at the OCFA. I had a 5 pm appointment, but there was almost no line at 4 pm. The previous day I had heard that cars and people were lined up for blocks at the end of the day. I was prepared to wait for 2 hrs or so, but the wait was 10 min.

Youu have to use the Othena app to schedule an appointment if you are not affliated with a hospital. Anyone in Phase1A all tiers are eligible to receive the vaccine. However, I think the website had so much demand that it crashed. On the app, I had to put in my personal information, submit health insurance info, fill out a questionnaire, upload my ID, check in, fill out a questionnaire the day of the vaccine, and they scanned my bar code twice before giving me the vaccine. The staff won't let you into to park lot or line up for the vaccine without showing them your appointment on this app.


December 21, 2020

Merry Christmas!    My office is open but with limited hours from December 21 to December 31st.   We have decided to take Christmas Eve and New Year's Eve off.  

I have been doing my research about the safety and efficacy of the Pfizer and Moderna COVID-19 vaccines.  Both of these vaccines have EUA (Emergency Use Authorization) from the FDA after Phase 3 clinical trials.   Both of these vaccines use mRNA based on the Spike Protein of SARS CoV 2.  In a nutshell the mRNA in the vaccine tells your body's cell machinery to produce this Spike protein which your body will recognize as foreign and produce antibodies to eliminate.  Note that the vaccine does not change your DNA or alter your cells in anyway.  The vaccine also does not contain the virus so you can't catch COVID-19 by getting immunized.

Thus far research of these two vaccines show that the Moderna vaccine is 94.1% effective and the Pfizer vaccine is 95% effective at preventing laboratory-confirmed COVID-19 illness in people without evidence of previous infection.  The current recommendation is to get a 2nd dose at 28 days and 21 days respectively (plus or minus 4 days) although it may depend on vaccine and appointment availablity.

While the vaccine is safe, people may experience side effects especailly during the first 24-48 hrs.  These symptoms include pain at the injection site (92-84.1%),  fatique (62.9-61.5%),  headache (64.7-55.1%) ,muscle pain (61.5-38.3%), chills (45.4-31.9%), nausea (23%), fever (15.5-14.2%), injection site swelling or redness (14.7-9.5%).  After getting the vaccine, they will have you wait at the site for 15-30 minutes to make sure you don't have a severe allergic reaction.   

Even though the percentages of side effects is fairly high, these symptoms typically resolve in 1-3 days.   I would rather have symptoms for 1-3 days to get immunity against  COVID-19 than to be sick for 2 weeks, quarantine from everyone, be unable to work, and risk having a life threatening disease that may cause permanent damage to my body.   It is also noteworthy that the vaccine may not keep 100% of people from getting COVID-19, however the research so far shows that none of the people who have received 2 doses of either vaccine have not gotten the severe form of it requiring hospitalization. 


December 3, 2020

The number of Coronavirus cases is on the rise presumably due to travel and gatherings related to Thanksgiving.  In California, there is concern that the growing number of cases will overwhelm our healthcare system and especially hospital ICUs.   Therefore Governor Newsom said in his new conference that there will likely be Regional Stay At Home Order in the near future.   However, he specifically stated that these orders will not affect dental care.   Governor Newsom's Dec 3 Regional Order

Please make an appointment for your check up and cleaning visit if you haven't been in our office in the last 6 months.  We are still open for routine dental care.   Dentistry is an essential service and will affect your overall health if treatment is delayed. Dental treatment is less costly, less uncomfortable, and more conservative the earlier the dental issue is treated.  If I received a dollar for every patient that said, "It doesn't hurt right now" and ended up regretting it later, I'd be retired already.   By the time a dental issue hurts, the issue usually requires a root canal, crown, and build up or tooth removal with a dental implant.  Unless you are keeping up with your dental check ups and cleaning, you may not know if you have a dental problem that requires treatment


November 7, 2020

Reasons to Schedule a Dental Visit.

  1. Dentistry is essential healthcare and will affect your overall health and could result in COVID-19 complications if you delay your dental care.  ADA-Dentistry is Essential Healthcare    DPR-Link Between Gum Disease & Covid
  2. Dental decay is growing faster and treatment needs are more severe during COVID-19 due to stress and habits from online school or working from home.  In my office, I'm personally seeing among my patients more cavities, larger decayed areas, increased grinding habits, multiple fractured teeth, higher rates of uncontrolled periodontal disease, and other severe dental issues than any other time in my 28 years of practicing dentistry. WebMD-Cracked Teeth Covid Collateral Damage
  3. Dentists are infection control experts and we know how to take care of patients in a safe environment. NBC News-Enhanced Infection Control
  4. It could take years to control COVID-19 even with possible vaccines on being released soon.  Distribution of the vaccines to everyone, willingness of people to get the vaccines, concerns about safety issues of the vaccines, effectiveness of the vaccines, inability of vaccines to provide "sterilizing immunity," contact tracing issues, and testing of people for COVID-19 are all factors that will prolong the worldwide pandemic. 

Therefore, you must think long term and make your dental care a priority during the pandemic!   Delayed dental care will eventually become critical care at some point.  Please call our office at 949 252-1889 to schedule an appointment.


November 1, 2020

I just added VIOP (internet) phone system with intelligent pop-ups on our pc.   With this new phone system, we have upgraded our emergency system to enable text photos and emergency notifications while I am away from the office.  

If you have a dental emergency, you would Press 2 to leave a message on my personal voicemail that will send me a notification.  Please text a photo of the issue if it is something that can be seen visually to 949 252-1889 (our office phone number) with your contact information.   Sometimes it is difficult to hear a person's name or phone number when a voice message is left and texting this information will insure I have the information needed to call you back.

Thank you,

Dr. Tang


October 13th

We have been back to work at the office for 5 months and I am pleased to report that my office has responded well to the pandemic.  Our KPI (Key Performance Indicators) are close to pre-Covid-19 levels and we have been able to handle the pent-up demand after being restricted to only emergency dental care from Mar 23-May 20.  

My office is well stocked on critical PPE like N95/KN95 masks, disinfectants, hand sanitizers, disposable jackets/gowns, gloves, etc. despite shortages and backorders nationwide.   All of my staff are back full time and our schedule is fairly normal. 

We are following the recommendations from the American Dental Association (ADA) and the CDC are comfortable with these new protocols.  My staff and I have remained healthy and the ADA reports that there are no reported transmission issues with COVID-19 from dental offices nationwide.  In general, dentistry has always been healthcare's leading proponent on infection control.  ADA-Covid Rates in Dentistry

Thank you to all the patients who have expressed their confidence in our new protocols for COVID-19 and my ability to stay up to date in keeping them safe during their dental visits!


July 29, 2020

We are back to working our normal hours again, but are seeing fewer patients due to social distancing and reduced staff availibility.  Our hours are below.

Monday         9:30-6:00  
Tuesday        9:00-6:00
Wednesday  9:30-6:00  
Thursday       9:00-6:00
Friday             9:00-3:00 (twice per month)
Sat                  9:00-3:00 (once per month)
Please be patient as we do our best to accomodate your dental treatment needs.
Thank you,
Dr. Tang

July 4, 2020

Dear Patient

Hope you are having a great 4th of July weekend and you are staying safe!

Over the time we have been open for all dental procedures, we have had several patients who have come for their routine cleanings with dental issues that require extra time to diagnose or treat.   Unless it’s an obvious issue, a pre-existing condition we have discussed, or a minor concern, please let my front office staff know BEFORE your scheduled appointment, especially if you would like us to address the dental issue at your cleaning visit. Otherwise with reduced staff hours (not in my control), it is especially difficult to work these issues into our day and it may require us to schedule another visit.  

Please make sure you are signed up for Email reminders with Solutions Reach, our practice communication software.    We are noticing that those patients who are signed up for only text messages are not receiving our COVID-19 questionnaire before each appointment, our newsletters, or other important updates.   Because texting has character limits and other restrictions, we can only provide a link to the newsletter or questionnaire with little explanation.   Therefore, patients are not clicking on these links.  

I do have the general information on my website blog ( and on Facebook for texters who don’t want to click the links.    This is information that is necessary as we continue to make changes to keep you safe and for my office to run smoothly.

Changes to our office recommended by the CDC and the ADA include

  1. Park and Call when you are in the parking lot.  To allow for social distancing, we ask that only the patient with a scheduled appointment (and one parent for children) come into the office after we let you know that we are ready to seat you.    
  2. Covid-19 questionnaire- as part of our screening protocol, we are required to ask you these questions and take your temperature to check that you are healthy.   If you have signed up for email, you will be able to submit this questionnaire with a few clicks from the email.   Again if you have opted in for text only, you will receive a link to Dropbox and you will have to download Adobe Acrobat, import the pdf to Acrobat, answer the questions, save it and either email or text it back to us one day before your visit.  
  3. Yes for texter without email, this requires multiple steps!I have tried a couple of outside services at additional cost, but they still required several steps and patients have to sign up for an account with the new vendor.For your convenience, we will be adding the Covid questionnaire as a download button on my website, home page
  4. .During your routine cleaning visits, we will not use an ultrasonic scaler or polish your teeth to reduce aerosols in our office.    If you require the above because of heavy calculus or stain, it is still available with an infection control fee of $15 for the increased disposables we have to use.  

Thank you,

Dr. Keith Tang & Staff


June 15, 2020

Dear Patient

Please note for upcoming appointments – in order to prevent the spread of COVID-19, we're asking patients to wait in their cars or outside of the office rather than in the waiting room. Please call the number below once you have parked.

949 252-1889

We are open for business with modified hours Monday, Tuesday, Thursday, and Friday (closed on Wednesdays) during the months of June and July. Thank you for those who have come in for a dental visit and expressed positive comments with the changes we have made in keeping you safe in our office. 

As one of those changes, we are sending out COVID-19 questionnaires 2-3 days before your scheduled visits. Please answer the questions on the questionnaire and return it on the day before your scheduled appointment.

  • If you are opted-in for Emails, we can batch email the questionnaire from Solution Reach which allows you to click “Take the Survey,” answer the questions, and submit them by clicking the button at the bottom of the survey.
  • If you are opted-in for Texts only, it has been more problematic to deliver the questionnaire and newsletters to you due to character limits and other texting regulations.   While we have tried a couple of new vendors, all methods still require a few steps.  Currently we are texting a link to the questionnaire on Dropbox which requires you to first download Adobe Acrobat, click the link on Dropbox, and import the questionnaire in to Acrobat before answering the questions.  Then after saving your responses, the questionnaire can be emailed back to us at [email protected]. It would greatly simplify this process if you would subscribe to emails (and text) from Solution Reach (our office communication system). 
  • If you have not opted in for emails or text or have not returned the questionnaire to our office, we are having you fill out a questionnaire in the office at the time of your check in. 

Note that I have converted most of our forms to Adobe Acrobat which can be individually emailed to you for a paperless experience if you prefer.  Having Acrobat on your phone will also enable you to store a digital signature and provide informed consents for many of our dental procedures.

If you would like an appointment for treatment or a cleaning, please call us. We apologize if you have been waiting for a phone call from us and have not received one yet.  With limited front office staff hours, it is difficult to call everyone who we were not able to see while the office was only open to dental emergencies during the last couple of months.    

Thank you for letting us continue to care for you and keep our community healthy at the same time!

Dr. Keith S. Tang & Staff


June 3, 2020

We have modified our hours based on staff availability.   Our hours are

Monday          9:30-6:00   
Tuesday         9:00-6:00
Wednesday   Closed
Thursday       9:00-6:00
Friday             9:00-3:00 (twice per month)
Sat                  9:00-3:00 (once per month)

Thank you for your understanding as we continue to adapt to a COVID-19 world!

Dr. Keith S. Tang


May 28,2020

We are experimenting with a few options for online forms so patients have the option of not having to touch paper, pens, or clipboards in my office. Ex. Pre Appointment COVID-19 screening questionaire

1. Opera DDS-requires that you create an account with them. It included their online forms, secure email w attachments, and    teledentistry triage.

2. Adobe Acrobat online forms- I converted most of our forms which can be emailed or texted, but recipients have to either download Adobe Acobat on their pc, or phone to be able to sign things digitally and email back to us. The big advantage of this is no monthly fees.

3. Solution Reach Intake- similar to Opera DDS and still requires that we manually email or text the forms using their platform. Also doesn't have secure email or teledentistry triage.

Please let me know if you have a major preference after you experience the above .

Thank you, Dr. Tang


May 13, 2020

Dear Patient

Thank you for being a part of our dental family.  These are challenging times and I hope that you are doing well.

We are reopening for business again starting May 20, 2020 with modified hours. If you have an urgent dental concern, please call us or click the link below.  We are prioritizing urgent treatment during the first few weeks in our schedule. Therefore, all previous appointments will be rescheduled until we catch up on the most critical dental concerns. 

To keep you (and my staff) safe as we provide you with the best dentistry that is available, there will be several changes which will affect your patient experience.  We ask for your understanding and flexibility as we adapt to a COVID-19 dental world

The below changes are based on guidelines from the CDC, OSHA, and ADA.

  1. When you schedule an appointment, our front office staff will ask you screening questions to determine your current state of health.
  2. To maintain social distancing and minimize contact, please call our office at 949 252-1889 when you arrive in the parking lot. If you need to sit in the waiting area, we request that only patients with scheduled appointments (or only one parent if we are seeing your child), come into the office. 
  3. We will call you on your mobile phone when we are ready to seat you in a treatment room.  Please wear a mask or face covering when you enter our office and continue to wear it until we are ready to begin treatment. 
  4. Our staff will take your temperature and ask you the screening questions again. They will be wearing masks and protective eyewear when they greet you in the reception area.
  5. For all AGPs (Aerosol Generating Procedures include cleaning with an ultrasonic scaler, teeth polishing, fillings, crowns, root canals, oral or periodontal surgery, etc.), we will be charging an infection control fee of $15 per appointment to help offset the increased costs for COVID-19 of disposable gowns/jackets, N95 masks, barriers, disinfection supplies, and other disposables.
  6. Before any AGP, we will be having you rinse with a 1.5% hydrogen peroxide solution for 60 seconds.
  7. After an AGP, we will have to shut down the treatment room for a specified period of time to allow our HEPA air purifiers to scrub the air.
  8. If you are having a cleaning and exam visit, we will NOT be routinely using an ultrasonic scaler or polishing your teeth to minimize aerosols generated. There will not be a separate infection control fee unless you require use of an ultrasonic scaler or insist we use the above items during your visit. 
  9. If you are having fillings done, we will be placing an isolation mask onto the area we are working after getting you numb, but before we begin treatment. Please remind us if you have a latex allergy.
  10. If you are having a crown, bridge, oral surgery, or other procedure in which we cannot use an isolation mask, we will be using auxiliary suction devices to minimize aerosols as we perform the procedure.
  11. At the completion of the treatment, please wait until we hand you a routing slip and notes for the front office to know what was done and what to schedule for your next visit. My back office staff and I have to remove our PPE (personal protective equipment) according to OSHA protocols before we can exit the treatment area which will delay us. While we will have our walkie talkies to communicate with the front office staff, we can only do so when cross contamination will not be a problem. 
  12. I apologize that according to the current recommendations, my staff and I will be wearing masks and other PPE for your entire appointment. I would suggest that if you have concerns that you would like to discuss that do not require clinical assessment, let’s set up a Teledentistry visit. This would not apply to issues that we would have to take x-rays or perform tests to evaluate. If the concern is visible, please take a photo of it and email it to us.

While some of you may be consider delaying dental care, please be advised that your mouth and teeth are connected to the rest of your body and the consequences of delayed treatment will affect your overall health.  Studies prove that there is a direct link between poor dental health and heart disease, diabetes, and other chronic illnesses.   Dental neglect also lowers your immunity to infectious diseases like COVID-19.

In the last recession back in 2008, I noticed that my patients who delayed dental care ended up needing root canals, crowns, extractions, and implants as their cavities, fractures, and other dental issues continued to deteriorate.   It is always less costly in both time and money to treat dental issues in the early stages. If finances are an issue, please discuss your concerns with my financial coordinator, Jasmine, and let us help you. 

We appreciate your cooperation with these changes and look forward to seeing you at your next dental visit.

All the Best,

Dr. Keith Tang & Staff


May 1, 2020

Dear Patient,

We hope you are well and taking good care of yourselves as we weather through the pandemic.

Even though we don’t have a definite date that our office will be able to see patient for all dental procedures, my staff and I have been diligently working on our Re-Opening Plan. As of today, my plan is 5 pages long and I add to it or provide more details as the recommendations from CDC, CalOSHA, CDA, and the ADA continue to evolve. Every webinar that I watch or news release prefaces with these are the latest recommendations that are subject to change as more information is obtained.

Some of the things we are doing include:

  1. Purchasing needed PPE (Personal Protective Equipment) and other recommended items in short supply such as masks, face shields, disinfectant sprays and wipes, disposable gowns/jackets, hydrogen peroxide, antibacterial soap, hand sanitizers, etc.
  2. Working out scheduling intervals with increased time for additional infection control practices and staggering appointments with hygiene to reduce patient contact in the front office area and provide for social distancing.
  3. Screening Protocols to see only healthy patients.  When you schedule an appointment we will ask you a series of questions and when you come for your appointment we will ask you these questions again.  
  4. Infrared temperature checks for both staff and all patients.
  5. Carside check-in (call when you arrive but wait until we call you to let you know we are ready to seat you).  We ask that only the patient (one parent w a child) with an appointment enter our office to minimize contact w other people and allow social distancing. 
  6. Analysis of AGP (Aerosol Generating Procedures) and ways to reduce them.   Some of the changes we have been considering include elimination vs selective use of ultrasonic scalers, use of auxiliary high speed suction devices for crowns (Mr. Thirsty, Ivory ReLeaf, etc.), use of rubber dam isolation for fillings from the start of the procedure, and cleanings with no polish to reduce splatter.
  7. Use of 1.5% Hydrogen peroxide pre-rinse for all AGPs to reduce pathogens
  8. Many practice consultants are recommending a separate infection control fee for AGPs to help offset some of the costs required to keep you safe. The cost per patient for PPE to follow CDC and OSHA recommendations is significant including N95 masks at $5/each x 2, disposable gowns at $3/each x 2, and the increased number of barriers and disposables which are yet to be determined. 
  9. HEPA air purifiers and working out the time intervals between patient for the treatment room after an AGP.
  10. Disinfection of the waiting area after a patient has sat there. Elimination of coffee, toys, gaming and magazines in the waiting area. 

In addition to text, email and phone calls individually with team members, I have been continuing to meet with my staff weekly via Zoom to discuss the changes as I hear about them. We have always been on top of the OSHA and CDC guidelines for dental offices but have added multiple items to our regiment with COVID-19.  Before we reopen, we will be practicing and working on implementing these changes into our usual office protocols. Like the changes that occurred to the airlines industry with 911, our world has changed forever, but we will adapt and get through this together.

All the Best,

Dr. Keith S Tang & Staff


April 13, 2020

Dear Patient,

I hope that you are staying healthy and enjoying time with your families.

As we are at the start of another week of the Governor’s Shelter-In-Place order, I wanted you to know that we are already making plans to reopen even though we don’t have a definite date.  I have been watching an average of 2-4 webinars per day on COVID-19, having Zoom staff meetings, talking, texting and emailing my staff to make necessary preparations and changes.  

Your safety is our highest priority!  When we are able to reopen, these are some of the changes we have been discussing and working on:

  1. HEPA Air Purifiers in our treatment rooms with Medical Grade filters.
  2. Curbside Check-In by phone while you wait in your car or outside. We will call or text you when we are ready to seat you.
  3. Patient screening questions over the phone when patients make an appointment to be sure people are healthy before coming to our office.
  4. Use of an Infrared no-touch thermometer to check for a fever and other screening protocols before you are seated for treatment.   We may ask if you have any cold or flu-like symptoms like a cough or sore throat; GI upset like diarrhea, nausea or abdominal pain; have they been in contact with anyone who is sick; or if they have traveled in the last 14 days.
  5. Removal of magazines in the waiting area and disinfection of the waiting area furniture after each patient sitting in the waiting area.
  6. Use of face-masks in addition to eye-wear and masks by my staff to increase protection from COVID-19.  Even my front office staff may be wearing face-masks.
  7. Use of my Panorex x-ray machine in BW mode for severe gaggers to reduce coughing.
  8. Limited use of our ultrasonic scalers to reduce aerosols.
  9. Flexible payment and financing optio