Oscar Marin, DDS

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(626) 810-5000

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3660 Nogales St. Building H, Suite D.
West Covina CA, 91792

Yelp Review

Geneyem B. - 5 star
"I love this dentist. They are so good and gentle. My whole family goes here and my girls (who are 7 and 5) love it here. They know our names, there's never a long wait, and they are gentle with our treatments. Dr. Marin is a very good dentist. He explains everything thoroughly and my girls trust him while he does their treatment. I would recommend this dentist too anyone who is looking for one."

Top 10 Dentistry Clinics in West Covina, CA
Congratulations to Oscar Marin's Practice on being the on top Dentist in West Covina ranking of 2015.
Verified by Opencare.com

Sensitive Teeth

Dental Abrasion – Whitening Sensitive Teeth

Too Much Brushing Can Hurt You!

Have you ever looked at the ingredients on your toothpaste? Most toothpaste formulations are aimed at preventing tooth decay with fluoride. In an effort to have better plaque and stain removal toothpaste manufacturers add “mild” abrasives as inactive ingredients. The amount of abrasive varies between different brands and even among different formulations of the same brand. But how is one supposed to know how abrasive or gritty is your toothpaste and how much is too much?

The Relative Dentin Abrasivity Index (RDA) tells you just that. It goes from 0 or non-abrasive to 250 which is the maximum allowable grittiness by the American Dental Association.

It is important to know the RDA index of the toothpaste you use because too much abrasion can literally sand away particles of tooth structure every time you brush.

Considering that we spend close to 24 hours out of every year brushing our teeth (that is if you brush 2 minutes, twice a day) a low abrasivity index could mean the difference between clean teeth and worn-out enamel or root surfaces. Some of the worn areas of the tooth will need to be restored with fillings or in the worst cases need root canal and crowns – even if the tooth has never had a cavity.

This is a case where the medicine to prevent tooth damage could end up hurting you in other ways if not used adequately.

Here are the RDA values for common toothpastes:

RDA Dentifrice brand and variety Source
07 straight baking soda Church & Dwight
08 Arm & Hammer Tooth Powder Church & Dwight
30 Elmex Sensitive Plus Elmex
35 Arm & Hammer Dental Care Church & Dwight
42 Arm & Hammer Advance White Baking Soda Peroxide Church & Dwight
44 Squigle Enamel Saver Squigle
48 Arm & Hammer Dental Care Sensitive Church & Dwight
49 Arm & Hammer Peroxicare Tartar Control Church & Dwight
49 Tom’s of Maine Sensitive (given as 40’s) Tom’s
52 Arm & Hammer Peroxicare Regular Church & Dwight
53 Rembrandt Original (RDA) Rembrandt
54 Arm & Hammer Dental Care PM Bold Mint Church & Dwight
57 Tom’s of Maine Children’s, Wintermint (given as mid-50’s) Tom’s
62 Supersmile Supersmile
63 Rembrandt Mint (‘Heffernan RDA’) Rembrandt
68 Colgate Regular Colgate-Palmolive
70 Colgate Total Colgate-Palmolive
70 Arm & Hammer Advance White Sensitive Church & Dwight
70 Colgate 2-in-1 Fresh Mint (given as 50-70) Colgate-Palmolive
79 Sensodyne Colgate-Palmolive
80 AIM Unilever
80 Close-Up Unilever
83 Colgate Sensitive Maximum Strength Colgate-Palmolive
91 Aquafresh Sensitive Colgate-Palmolive
93 Tom’s of Maine Regular (given as high 80’s low 90’s) Squigle (Tom’s)
94 Rembrandt Plus Rembrandt
94 Plus White Indiana study
95 Crest Regular (possibly 99) P&G (P&G)
101 Natural White Indiana study
103 Mentadent Squigle
103 Arm & Hammer Sensation Church & Dwight
104 Sensodyne Extra Whitening Colgate-Palmolive
106 Colgate Platinum Indiana study
106 Arm & Hammer Advance White Paste Church & Dwight
107 Crest Sensitivity Protection Colgate-Palmolive
110 Colgate Herbal Colgate-Palmolive
110 Amway Glister (given as upper bound) Patent US06174515
113 Aquafresh Whitening Indiana study
117 Arm & Hammer Advance White Gel Church & Dwight
117 Arm & Hammer Sensation Tartar Control Church & Dwight
120 Close-Up with Baking Soda (canadian) Unilever
124 Colgate Whitening Indiana study
130 Crest Extra Whitening Indiana study
133 Ultra brite (or 120-140) Indiana study (or Colgate-Palmolive)
144 Crest MultiCare Whitening P&G
145 Ultra brite Advanced Whitening Formula P&G
145 Colgate Baking Sode & Peroxide Whitening (given as 135-145) Colgate-Palmolive
150 Pepsodent (given as upper bound) Unilever
165 Colgate Tartar Control (given as 155-165) Colgate-Palmolive
168 Arm & Hammer Dental Care PM Fresh Mint Church & Dwight
200 Colgate 2-in-1 Tartar Control/Whitening or Icy Blast/Whitening (given as 190-200) Colgate-Palmolive
200 recommended limit FDA
250 recommended limit ADA

To view a copy of this RDA list  click on the link below to view or print from Google Docs:

 RDA – Relative Dentin Abrasivity Index of Toothpaste Brands

Please feel free to ask Dr. Marin about Teeth Sensitivity problems by calling 626.810.5000 for more information.

* Toothpaste makers regularly measure their product’s abrasivity. It’s necessary for FDA approval, and usually is not included in marketing. Abrasivity measurements are given by what’s known as an RDA value which stands for radioactive dentin abrasion or relative dentin abrasivity.

To measure RDA in the lab, the tester starts with extracted human or cow teeth. The teeth are irradiated in a neutron flux, mounted in methylmethacrylate (bone glue), stripped of enamel, inserted into a brushing-machine, brushed by ADA standards (reference toothbrush, 150g pressure, 1500 strokes, 4-to-1 water-toothpaste slurry). The radioactivity of the rinsewater is then measured and recorded. For experimental control, the test is repeated with an ADA reference toothpaste made of calcium pryophosphate, with this measurement given a value of 100 to calibrate the relative scale.

Sensitive Teeth Whitening West Covina Dentist

RDA Toothpaste Brands Abrasion Report

Too much abrasion can literally sand away particles of tooth structure every time you brush.

Please call 626.810.5000
for information on Teeth Sensitivity and Dental Abrasion.

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