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An electron microscopic evaluation of the enamel surface subsequent to various debonding procedures
Author(s) -
Howell S.,
Weekes W. T.
Publication year - 1990
Publication title -
australian dental journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.701
H-Index - 71
eISSN - 1834-7819
pISSN - 0045-0421
DOI - 10.1111/j.1834-7819.1990.tb05402.x
Subject(s) - enamel paint , materials science , surface roughness , polishing , scanning electron microscope , premolar , composite material , surface finish , slurry , dentistry , molar , medicine
In this study, enamel surface roughness was investigated following the use of various combinations of bonding agents, burs and polishing procedures. Orthodontic brackets were bonded to 135 premolar teeth extracted from adolescents. Subsequent to debonding and finishing, the enamel surface was gold coated and examined in the scanning electron microscope. Each 200 x photomicrograph was graded according to surface roughness and assigned to one of four selected standard grades. The use of different composites and different burs showed no significant effect on the finish of the enamel surface using Chi‐square tests. Only two finishing procedures had a significant effect on surface roughness. The use of a Soflex disc followed by pumice slurry resulted in the roughest enamel surface and the use of pumice alone produced the smoothest enamel surface.