Microradiographic study of demineralization of shark enamel in a human caries model.

Scand J Dent Res

Department of Pedodontics and Caries Prophylaxis, Dental Faculty, University of Oslo, Norway.

Published: June 1988

AI Article Synopsis

  • The study compared the resistance of shark enamel (fluoroapatite) and human enamel (hydroxyapatite) to dental caries in a real-life setting involving children.
  • Two enamel samples were placed in removable appliances for a month, with results showing greater mineral loss and lesion depth in human enamel compared to shark enamel.
  • Despite its high fluoride content, shark enamel demonstrated limited resistance to caries challenges.

Article Abstract

The aim of the present study was to compare the resistance of fluoroapatite (shark enamel) and hydroxyapatite (human enamel) against a high caries challenge in a human in vivo model. Two samples of shark enamel and human enamel were each placed in removable appliances in six children and carried for 1 month and a plaque retentive device was placed over each enamel sample. The results showed that the mean total mineral loss (delta Z) was 1680 vol% micron in human enamel and 965 vol% micron in shark enamel. The corresponding mean values for lesion depth were 90 micron and 36 micron, respectively. It is concluded that even shark enamel containing 30,000 ppm F has a limited resistance against caries attacks.

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http://dx.doi.org/10.1111/j.1600-0722.1988.tb01545.xDOI Listing

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