Air polishing with erythritol powder – In vitro effects on d
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Low-abrasive polishing powders such as glycine (GLY) or erythritol (ERY) are used for subgingival air polishing. GLY was reported to possibly affect the dentin surface, while this is unclear for ERY. This in vitro study aimed to evaluate the substance loss from the dentin surface by air polishing with ERY at different settings for pressure (PR), distance (DI), and angulation of the spray jet to the surface (AJ). The in vitro testing was performed on smooth human root dentin surfaces. In 18 groups with 10 specimens each, ERY was applied with constant water supply for 5 s without moving the handpiece at the following settings: PR minimum (min), medium (med), and maximum (max); DI at 1, 3, and 5 mm; and 45° or 90° AJ. The substance loss was measured as defect depth (DD) using three-dimensional (3D)-laser profilometry. ANOVA with Bonferroni correction used for statistical analysis.

Slight loss of dentin might occur during air polishing with ERY depending on DI, PR, and AJ. The setting influences the amount of dentin loss. This in vitro study proves that performing air polishing with ERY caused a small but measurable substance loss of the blasted dentin surfaces and the amount of the substance loss varied depending on the combination of the tested parameter. It depends especially on the working DI, while the AJ and the PR setting show lower effects.

Source: http://www.jisponline.com/article.asp?issn=0972-124X;year=2020;volume=24;issue=5;spage=433;epage=440;aulast=Kr?ger
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