Bay Area Dental Group
San Francisco Dr. Poriya Dokhanchi
ph: 415-921-9210

fax: 415-921-9207

Marina District, San Francisco

2001 Union St., Ste 690
San Francisco, CA 94123

San Mateo Location
324 N. San Mateo Dr., Ste 1
San Mateo, CA 94401

ph: 650-342-9571
fax: 650-342-9678

Frequently Asked Questions

How do I use dental floss?

Floss is cheap, so don't be stingy! Tear off about a forearm's length to start. Wrap one end around the middle finger of one hand to 'anchor' it and pick up the other end about 4-6 inches away with the middle finger of the other hand. This allows you to manipulate the floss with your thumb and fore finger. As you soil a section of floss, 'reel' in another 4-6 inches of clean floss with the anchor finger as you release the floss with the other finger. Never shoe-shine the teeth in a back-and-forth motion as you will either notch your teeth and/or cut your gums.

How often should I get x-rays?

For most people, a complete radiographic survey should be done every 3 years, and a "check up" or "recall" set every 6 to 12 months. A complete set of x-rays is estimated to expose you to the same amount of radiation you get on a flight from San Francisco to Seattle.


Doctors use x-rays as an aid in diagnosing problems. Without x-rays, "seeing" the problem will be difficult if not impossible.

What causes tooth decay?

Tooth decay, also know as dental caries, is caused by acids which are produced by bacteria in the presence of sugar. To prevent decay bacteria, sugar and acids must be periodically removed by way of brushing and flossing. Simple tips like, don't sip sugar drinks such as soda, drink the soda straight down as constant sipping is harmful. Ask Dr. Dokhanchi for other tips to prevent tooth decay.

What is the best kind of toothbrush?

Generally speaking, a soft bristled toothbrush is best. Whether you use a manual toothbrush or an electric, anything harder than soft, is too hard. Stiff bristles may give you that clean feeling, but they can also abrade your teeth and cause gum recession.

new patients

San Francisco

Office Hours

  • Monday:
  • Tuesday:
  • Wednesday:
  • Thursday:
  • Friday:
  • Saturday:
  • 8:00am-5:00pm
  • 8:00am-5:00pm
  • 8:00am-5:00pm
  • 8:00am-5:00pm
  • 8:00am-5:00pm
  • 8:00am-5:00pm

Contact Info
Phone | 415-921-9210
Fax | 415-921-9207
E-mail |

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