Cervical margin finishing in Class II cavities: optical microprofilometer analysis of four different methods
| Autor: | Dino Re, G. Ciampalini, S. D. Heintze, Nicola Barabanti, Antonio Cerutti |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Orthodontics
Molar Engineering drawing Materials science Waviness Magnification PARALLELOMETER 030206 dentistry Surfaces and Interfaces General Chemistry Surfaces Coatings and Films 03 medical and health sciences 0302 clinical medicine Mechanics of Materials Cervical margins Materials Chemistry Surface roughness Profilometer 030223 otorhinolaryngology |
| Zdroj: | Journal of Adhesion Science and Technology. 30:814-825 |
| ISSN: | 1568-5616 0169-4243 |
| DOI: | 10.1080/01694243.2015.1125720 |
| Popis: | Objectives: The finishing of the gingival floor and its margins is regarded to be necessary in Class II cavities, so the aim of this research was to evaluate 4 finishing systems for the cervical margins of Class II cavities, with regard to surface roughness and waviness. Methods: Eighty Class II cavities were prepared in 20 intact molars by a single operator, using a diamond-coated bur (granulometry 80 μm) mounted on a parallelometer, under magnification (5x, Zeiss) in order to reduce variability. In every tooth, 4 different finishing methods were randomly applied: A: carbide bur; B: straight hand chisel; C: diamond-coated bur 60 μm; and D: diamond-coated sonic instrument. After that, the gingival floor of each cavity was analysed with an optical profilometer. Mean surface roughness (Ra) and mean surface waviness (Wa) were evaluated with an optical device. Results were analysed with ANOVA after ln-transformation of data. One- and two-way ANOVA was applied. Results: There was no statistically signi... |
| Databáze: | OpenAIRE |
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