Particle Size Effects on Abrasion, Surface Polishing and Stain Removal Efficacy in a Tooth Model System
نویسندگان
چکیده
Four calcined alumina abrasive particles [ultrafine (0.05 ?m), 3 ?m, 9 ?m and 20 ?m] with defined sizes were investigated for their effects on toothbrush abrasion, surface polishing stain removal in vitro . The existence of a critical particle size (CPS) was shown the first time tooth model system present study CPS ~2.3 d10, 4.3 d50 or 7.8 d90 abrasives apparent. values indicate that 10%, 50% 90% measured less than equal to stated. This dimension enabled maximum action tested specimens resulting largest wear depth, greatest best removal. enamel depth decreased when brushed above became almost independent further increases, which is useful minimising development dentifrice. findings provide new information modification control toothpaste abrasivity cleaning. • has been demonstrated model. A linear relationship observed between cleaning power abrasion. association abrasion number strokes.
منابع مشابه
Abrasion, polishing, and stain removal characteristics of various commercial dentifrices in vitro.
OBJECTIVE To evaluate, using conventional in vitro procedures, the abrasivity, enamel polishing properties, and stain removal effectiveness of various commercial dentifrices that have a variety of compositions and are marketed for cleaning, whitening, and/or polishing capabilities, and to examine their relationships between stain removal and abrasivity. METHODS The Relative Dentin Abrasivity ...
متن کاملClinical comparison of the stain removal efficacy of two air polishing powders
OBJECTIVES Air polishing with sodium bicarbonate powders with a grain size of 40 μm is recommended for patient comfort. However, the efficacy of small grain size on stain removal has not been adequately studied. This study aimed to compare the stain removal efficacy of sodium bicarbonate powders with grain sizes of 65 and 40 μm and to evaluate patient acceptance and operator opinion after using...
متن کاملEffect of Melamine Sponge on Tooth Stain Removal.
OBJECTIVES To investigate the stain removal ability of melamine sponge before aesthetic tooth whitening in extracted teeth. METHODS Melamine sponge of thickness 40 mm was compressed and the destruction of the partition wall structure during the compression process was examined under a stereoscopic microscope. An extracted human tooth was cleaned by normal polishing or with melamine sponge for...
متن کاملParticle Size Effects on Hydro-Cyclone Performance
The hydrocyclone has a very important roll in industrial separation. The consideration of its behavior is very important for design. In this investigation, behavior of water flow and particles trajectory inside a hydrocyclone has been considered by means of numerical and experimental methods, and results have been compared together. To have a numerical simulation, a CFD software was used, and f...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biotribology
سال: 2021
ISSN: ['2352-5738']
DOI: https://doi.org/10.1016/j.biotri.2021.100196