Analysis of the effects of air polishing powders containing sodium bicarbonate and glycine on human teeth
| Autor: | Fredy Schmidli, Roland Weiger, Clemens Walter, Julia Bühler |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Molar
Root surface Sodium bicarbonate Surface Properties business.industry Chemistry Glycine Dentistry Air polishing Dental Polishing chemistry.chemical_compound Sodium Bicarbonate medicine.anatomical_structure Dentin medicine Surface roughness Humans Powders Tooth Root Geometric mean business General Dentistry Nuclear chemistry |
| Zdroj: | Clinical Oral Investigations. 19:877-885 |
| ISSN: | 1436-3771 1432-6981 |
| DOI: | 10.1007/s00784-014-1317-z |
| Popis: | Objectives: The aim of this study was an analysis of the root surface roughness caused by air polishing powders containing sodium bicarbonate or glycine. Methods: The roots of human molars were sectioned into dentin discs and irradiated with three different powders: (A) sodium bicarbonate (dv50 = 62μm), (B) glycine (dv50 = 49μm) and (C) glycine (dv50 = 21μm). Standardized conditions in terms of instrumentation time (5 and 10s), pressure (1.8bar), distance (2 and 5mm) and angulation (45° and 90°) were applied. Surface roughness (DIN EN ISO 4287:1998) of the probes was analysed by means of the surface profile values "Pa” and "Pt” and the surface roughness value "Rz”. The effect of treatment (treated vs. untreated) was studied on each disc. Geometric mean ratios (GMRs) from mixed effects models and confidence intervals (95% CI) were calculated. Results: For Pa, the comparison revealed significant differences between powders A and B (GMR 3.57, 95% CI 2.87-4.43, p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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