Surface hardness and color change of dental enamel exposed to cigarette smoke

Background: Tooth susceptibility to discoloration can be attributed to defects in enamel and dentin due to pigments penetration into the cracks and tubules present in the dental substrates Aims & Objectives: This in vitro study was undertaken to evaluate the microhardness and the color change of...

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Bibliographic Details
Published in:	International journal of dental clinics Vol. 3; no. 4; p. 1
Main Authors:	S, Bertoldo C.E. dos, de A., Miranda D, E.J., Souza-Junior, F.H.B., Aguiar, D.A.N.L., Lima, L., Ferreira R, I., Claes, J.R., Lovadino
Format:	Journal Article
Language:	English
Published:	Celesta Software Private Limited 01-10-2011
Subjects:	Mechanical properties Smoking
Online Access:	Get full text
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Summary:	Background: Tooth susceptibility to discoloration can be attributed to defects in enamel and dentin due to pigments penetration into the cracks and tubules present in the dental substrates Aims & Objectives: This in vitro study was undertaken to evaluate the microhardness and the color change of dental enamel exposed to cigarette smoke. Materials & Methods: Fifteen bovine enamel fragments (25 mm2) were submitted to exposure to the equivalent of cigarette smoke from 50 cigarettes over a period of five days. Initial and final readings of microhardness and colorimetric evaluation were performed. The results were analyzed statistically with the one-way ANOVA and Tukey test (p [less than or equal to] 0.05). Results: The samples presented a significant color change and a decrease in the values of microhardness. Conclusion: In conclusion, the exposure to cigarette smoke can significantly alter the microhardness of enamel and its coloring. Key Words: Knoop hardness; Color; cigarette smoke; dental enamel
ISSN:	0975-8437 0975-8437