Our community has been through a lot due to the ongoing pandemic, and all of us are looking forward to resuming our normal habits and routines. While many things have changed, one thing has remained the same: our commitment to your health and safety.

Infection control has always been a top priority of our dental practice, and you may have seen that we take great pride in this. Our infection control processes are made so that when you receive care, it’s both safe and comfortable. We want to tell you about the infection control procedures we follow in our practice to keep the patients, staff, and the ones we come in contact with in our daily lives safe.

Our office follows infection control recommendations made by the American Dental Association (ADA), the U.S. Centers for Disease Control and Prevention (CDC), and the Occupational Safety and Health Administration (OSHA). We follow the activities of these agencies so that we are up-to-date on any new rulings or guidance that may be issued.

Upon the emergence of COVID-19, here are some additional measures we take to ensure your safety:
  • Our office will communicate with you beforehand to ask some screening questions. You’ll be asked those same questions again when you are in the office, and we will be taking your temperature. Based on your answers and if your temperature is 100.4°F or higher, we will need to reschedule your appointment.
  • We have hand sanitizer that we will ask you to use when you enter the office. You will also find some in other places in the office for you to use as needed.
  • You may see that our waiting room will no longer offer magazines, children’s toys and so forth, since those items are difficult to clean and disinfect. Similarly, please limit the personal belongings that you bring inside to your appointment.
  • Appointments will be managed to allow for social distancing between patients when possible. That might mean that you’re offered fewer options for scheduling your appointment. Please respect the social distancing requirement of 6 feet where practical.
  • We will do our best to allow greater time between patients to reduce waiting times for you, as well as to reduce the number of patients in the reception area at any one time. To that end, please consider calling from your car to check on the status of the reception area and be on time. Also, please come alone to your appointments. If needed, one guardian/caretaker is permitted, but they must remain in the reception area.
  • Please arrive with face masks/coverings for they will be required at all times for both patients and staff when appropriate.
  • An antiseptic mouth rinse will be used just prior to treatment for the health and safety of all. Where possible, expect changes in how we do certain procedures to eliminate or reduce the spread of aerosols and splatter during treatment. For example, for now we will be temporarily eliminating ultrasonic tools and teeth polishing during your teeth cleaning appointments until further notice.
  • Clear sneeze guard barriers between you and our front desk personnel will be used to aid in social distancing, and we ask that we all limit our conversations to what’s necessary to limit contact time. More regular and frequent sanitizing of high touch areas and items will be done for your health and safety. This includes door and other handles, light switches, countertops, etc.
We look forward to seeing you again and are happy to answer any questions you may have about the steps we take to keep you, and every patient, safe in our practice. To make an appointment, please call our office at 415-752-8311 .

Thank you for being our patient. We value your trust and loyalty and look forward to welcoming back our patients, neighbors, and friends.

Dr. Leo Arellano

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Understanding tooth decay in San Francisco

Understanding tooth decay in San Francisco

In today’s fast-paced society, people frequently turn to snacks and fast food, bypassing a nutritious meal for one that is filled with starches and sugars. Unfortunately, many are oblivious to the detrimental effect these choices can have on their oral health. Oral bacteria thrive on the overabundance of starch and sugar and produce acids that can lead to tooth decay, which is the second most frequently occurring health disorder, surpassed only by the common cold. Although most often occurring in children, young adults, and seniors, decay can affect anyone of any age.


Oral bacteria, the acid they produce, saliva, and food particles combine and form a sticky biofilm called plaque. The sticky film clings to teeth, especially on the molars, at the gumline, and at the edge of fillings. Plaque begins forming within twenty minutes of eating. When it isn’t removed promptly, decay will begin. The acid in the plaque damages the hard tooth enamel by dissolving, or demineralizing it.


The demineralization creates tiny openings in the weakened enamel, which are the initial stages of cavities. Once the enamel erodes, the acid and bacteria reach the dentin layer of the tooth, which is softer and has less resistance to the acid. The destruction of the tooth continues as the bacteria and acid chew through the dentin and reaches the pulp in center of the tooth, damaging it. At this point, sensitivity to temperatures, and a severe toothache are likely to develop.

We are here to help Call us at 415-881-4343 or Schedule an Appointment


The method of treatment depends on the extent of the decay. All procedures require that the decayed portion of the tooth structure be removed. If the cavity was caught in the early stages, a resin or porcelain filling can repair the damage effectively with a natural look. If the tooth has been structurally weakened by the cavity, a dental onlay or crown may be necessary to strengthen and protect it. When the decay has reached the inner portion of the tooth, root canal therapy may be necessary to remove the damaged pulp and save the tooth. This treatment can make a tooth brittle, so a crown may be placed over the tooth to prevent breakage.


We use the Diagnodent® laser to detect cavities before they are visible to the naked eye or x-rays, enabling us to focus on the earliest, easiest treatment possible. Although early treatment is less expensive and less painful than treating extensive decay, prevention is the best treatment of all. Making wise food choices, practicing excellent oral hygiene, dental sealants, and regularly visiting Dr. Leo Arellano and his talented dental team is the smoothest path to optimal oral health in San Francisco. Call 415-881-4343 and schedule a checkup today.

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Real Patients Real Results

Before and After Photos

Severe gum recession with recurrent root decay and re-repairs of the filling remedied with a simple gum graft to cover the root, simplify oral hygiene, and make future repairs easier.

Photo by Dr. Leo Arellano

Gum Disease – BNA Image – 07
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What our patients are saying...

originally posted on Google

Great dentist and very pleasant to work with. He has been very helpful in helping you understand the entire process of your dental needs! If you want someone to take has time with you, he is your guy. I am very happy and pleased with his fantastic service. Also, his front staff is wonderful and very ease to talk to and very helpful. May provide excellent patient service!

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