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Type: Journal article
Title: Comparison of exposed dentinal surfaces resulting from abrasion and erosion
Author: Bell, E.
Kaidonis, J.
Townsend, G.
Richards, L.
Citation: Australian Dental Journal, 1998; 43(5):362-366
Publisher: Australian Dental Association
Issue Date: 1998
ISSN: 0045-0421
Statement of
Emma Jane Bell, John Kaidonis, Grant Townsend and Lindsay Richards
Abstract: The aim of this study was to compare the shape of exposed dentinal surfaces caused by abrasion and erosion with a view to developing a diagnostic clinical test. The study material consisted of 80 natural teeth and 129 dental models obtained from Australian Aborigines known to display considerable dental abrasion due to their diet, and dental models of 37 Caucasians diagnosed with dental erosion through detailed history and dietary analysis. Polyvinyl siloxane impressions were obtained of all occlusal surfaces with dentinal scooping in both the ‘abrasion’ and ‘erosion’ groups. All impressions were sectioned buccolingually through the deepest point of the scooped dentine, and then the profiles were photocopied at X 2 magnification. The breadth and depth of dentinal profiles were measured to an accuracy of 0.1 mm, enabling ratios of depth:breadth to be determined, and the position of the deepest part of each scooped surface was recorded. The mean depth:breadth ratio of scooped dentine was significantly greater in the Aboriginal natural teeth (0. 19±60.06, mean±SE) than in the Aboriginal dental models (0.15±0.04). Both Aboriginal natural teeth and models with abrasion showed significantly smaller ratios (p<0.05) than the Caucasian models showing erosion (0.33±.07). Furthermore, in the abrasion samples, the deepest region of the scooped dentine tended to be lingually placed more often in maxillary teeth but buccally placed more often in mandibular teeth (p<0.05). These results indicate that scooped dentine on abraded occlusal surfaces of teeth displays significant differences in shape compared with that caused mainly by erosion.
Keywords: Tooth wear; human populations; clinical diagnosis; abrasion; erosion; corrosion
Description: The document attached has been archived with permission from the Australian Dental Association. An external link to the publisher’s copy is included.
RMID: 0030002968
DOI: 10.1111/j.1834-7819.1998.tb00190.x
Published version:
Appears in Collections:Dentistry publications

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