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Periodontal disease is diagnosed by your dentist or dental hygienist during a periodontal examination.  This type of exam should always be part of your regular dental check-up.

A periodontal probe (small dental instrument) is gently used to measure the sulcus (pocket or space) between the tooth and the gums.  The depth of a healthy sulcus measures three millimeters or less and does not bleed.  The periodontal probe helps indicate if pockets are deeper than three millimeters.  As periodontal disease progresses, the pockets usually get deeper.

Your dentist or hygienist will use pocket depths, amount of bleeding, inflammation, tooth mobility, etc., to make a diagnosis that will fall into a category below:


Gingivitis is the first stage of periodontal disease.  Plaque and its toxin by-products irritate the gums, making them tender, inflamed, and likely to bleed.


Plaque hardens into calculus (tartar).  As calculus and plaque continue to build up, the gums begin to recede from the teeth.  Deeper pockets form between the gums and teeth and become filled with bacteria and pus.  The gums become very irritated, inflamed, and bleed easily.  Slight to moderate bone loss may be present.

Advanced Periodontitis

The teeth lose more support as the gums, bone, and periodontal ligament continue to be destroyed.  Unless treated, the affected teeth will become very loose and may be lost.  Generalized moderate to severe bone loss may be present.


Read what people are saying about us.

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5 star rating 8/30/2017
Dr. Thai has been my dentist for over 3 years now and I'm still fully satisfied with this office! The main thing I like about this office is that they really care about the patient.
So if you're looking for an office that pays attention to personalized care and a dentist that listens to your needs and concerns, this is the office for you!
They accept most insurances so if you're not sure if they are in network, make sure to give them a call and they will help you through the process!

CK in Sunnyvale on 08/30/2017

5.0 star rating 3/13/2016
I strongly disagree with Peter Z. I doubt that his review is for Dr Thai. I've been with Dr. Thai for 2 years and she never did what Peter Z has described. Dr. Thai is not a pushy person, I don't believe she would repeatedly up-sell unnecessary procedures to her patients. She is professional, knowledgable, skillful, experienced, down to earth, sincere, friendly. There are a lot of great values I found on her as an outstanding dentist.

I would highly recommend her to anybody.

Richard via Yelp

5.0 star rating 11/20/2015
1 check-in
This review is long overdue! I have been a patient of Dr. Thai for over 7 years now. I concur with the other reviews that she is sincere, friendly, and will go above and beyond to help with getting your dental needs taken care of. She would take the time to answer all of my questions and was very thorough with her cleanings, screenings, and overall dental care. The best thing about her is that she is gentle and patient. If you happen to see her during the holiday season, you may get a chance to try her homemade muffins or cookies. Her assistant told me that she loves to bake during the holidays, and she would share them with patients and colleagues. Her office even have cool dental items like bacon, pickle, and cupcake toothpaste/floss for you to try. So if you want a personalized and friendly office where the dentist knows all of her patients by name, then I highly recommend Dr. Thai. You won't be disappointed.

Chip via Yelp

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Contact Us.We encourage you to contact us with any questions or comments you may have. Please call our office or use the quick contact form.

Contact Us

We encourage you to contact us with any questions or comments you may have. Please call our office or use the quick contact form below.