Development of a grinding instrument for the dental enamel polishing
- VernacularTitle:牙釉质表面处理仪研制及其对离体牙抛光效果的研究
- Author:
Shanmin FU
;
Yin DING
;
Zhen SHI
- Publication Type:Journal Article
- Keywords:
Polishing;
Surface roughness;
Dental enamel;
Orthdontics
- From:
Journal of Practical Stomatology
2001;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To develop a grinding intrument for removing the remaining bonding material and polishing the dental enamel after orthodontic treatment. Methods: A dental griding instrument was made based on ultrasonic principle with the frequency of 25～45 kHz. 60 premolars extracted for orthodontic purpose were used in the experiment, before treatment the surface roughness was measured and recorded as Ra 1. Brackets were adhered to the premolars, and then debonded. The surface enamel of 30 teeth were polished by the ultrasonic grinding instrument (group of GI), that of another 30 by conventional technique(group of CT) , the roughness was measured and recorded as Ra 2. Results: In group GI Ra 1 and Ra 2 were 0.846 6?0.428 2 and 0.740 5?0.372 1(P0.05), respectively. After treatment Ra 2 in group GI was smaller than that in group CT(P
