Determining the polishing quality of nanofilled resins using an atomic force microscope

Elías Omar Midobuche Pozos; María Teresa Zermeño Loredo; Juan Manuel Guízar Mendoza; Sergio Calixto Carrera

2016, Number 5

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Rev ADM 2016; 73 (5)

Determining the polishing quality of nanofilled resins using an atomic force microscope

Midobuche PEO, Zermeño LMT, Guízar MJM, Calixto CS

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Language: Spanish
References: 20
Page: 255-262
PDF size: 617.55 Kb.

ABSTRACT

Introduction: The procedures for finishing and polishing dental restorations are crucial phases in dental practice, as well-finished and well-polished surfaces increase the longevity of the restoration and reduce the buildup of plaque and marginal color changes in both the restoration and the surface. Objective: The purpose of this study was to evaluate three different polishing systems: Sof-Lex^™, Jiffy^® polisher cups, and the OptraPol one-step system, based on the surface obtained using three brands of cosmetic nanohybrid resins in the anterior and posterior regions. Material and methods: Thirty-six 8 x 2.5 mm discs were made, 12 for each brand of resin. Four groups were established, one for each polishing system and a control one. The polished surfaces were evaluated using an atomic force microscope and then compared based on an analysis of variance between groups (ANOVA). Results: The three-step methods (Jiffy^® and Sof-Lex^™) produced roughness values below the maximum considered to be clinically acceptable. The one-step system produced the highest surface roughness values, which were twice those of the three-step methods. Conclusion: The roughness values found were below the clinically acceptable threshold of 1 µm, hence the polishing methods used in the study can be regarded as suitable for polishing nanohybrid resins.

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