Home Subscription Services

Oral Health and Preventive Dentistry
OHPD Home Page
OHPD Pre-Print
About the Editor
Editorial Board
Author Guidelines
Submission Form
Reprints / Articles
Official Website
Quintessence Publishing: Journals: OHPD


Oral Health & Preventive Dentistry

Edited by Anton Sculean, Poul Erik Petersen, Avijit Banerjee

ISSN (print) 1602-1622 • ISSN (online) 1757-9996


Winter 2004
Volume 2 , Issue 4

Pages: 383-388
DOI: 10.3290/j.ohpd.a9766
Share Abstract:

The Measurement of Enamel Wear of Two Toothpastes

Joiner, Andrew/Weader, Elizabeth/Cox, Trevor F.

The aim of this study was to compare the enamel abrasivity of a whitening toothpaste with a standard silica toothpaste.

Materials and Methods:
Polished human enamel blocks (4 x 4 mm) were indented with a Knoop diamond. The enamel blocks were attached to the posterior buccal surfaces of full dentures and worn by adult volunteers for 24 hours per day. The blocks were brushed ex vivo for 30 seconds, twice per day with the randomly assigned toothpaste (n = 10 per treatment). The products used were either a whitening toothpaste containing Perlite or a standard silica toothpaste. After four, eight and twelve weeks, one block per subject was removed and the geometry of each Knoop indent was re-measured. From the baseline and post-treatment values of indent length, the amount of enamel wear was calculated from the change in the indent depth.

The mean enamel wear (sd) for the whitening toothpaste and the standard silica toothpaste after four weeks was 0.20 (0.11) and 0.14 (0.10); after 8 weeks was 0.44 (0.33) and 0.18 (0.17), and after 12 weeks was 0.60 (0.72) and 0.67 (0.77) microns respectively. After four, eight and twelve weeks, the difference in enamel wear between the two toothpastes was not of statistical significance (p > 0.05, 2 sample t-test) at any time point.

The whitening toothpaste did not give a statistically significantly greater level of enamel wear as compared to a standard silica toothpaste over a 4-, 8- and 12-weeks period.

Key words:
tooth wear, tooth whitening, abrasion, toothpaste

Full Text PDF File | Order Article


  © 2017 Quintessence Publishing Co Inc

Home | Subscription Services | Books | Journals | Multimedia | Events | Blog
Terms of Use | Privacy Policy | About Us | Contact Us | Advertising | Help | Sitemap | Catalog