AN ELECTRON-MICROSCOPIC EVALUATION OF THE ENAMEL SURFACE SUBSEQUENT TO VARIOUS DEBONDING PROCEDURES

被引：39
作者：
HOWELL, S
WEEKES, WT
机构：
[1] Head of Unit - Orthodontics, Westmead Hospital Dental Clinical School
来源：
AUSTRALIAN DENTAL JOURNAL | 1990年 / 35卷 / 03期
关键词：
Debonding; enamel surface; orthodontics;
D O I：
10.1111/j.1834-7819.1990.tb05402.x
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
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. 1990 Australian Dental Association
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收藏
页码：245 / 252
页数：8
相关论文
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