IngentaConnect Child Toothbrush Abrasion Effect on Ionomeric Materials

Authors: Carvalho, Fabíola G.¹; Fucio, Suzana B.P.¹; Paula, Andréia B.¹; Correr, Gisele Maria¹; Sinhoreti, Mario A.C.²; Puppin-Rontani, Regina M.³

Source: Journal of Dentistry for Children, Volume 75, Number 2, May-August 2008 , pp. 112-116(5)

Publisher: American Academy of Pediatric Dentistry

Abstract:

The purpose of the study was to evaluate the abrasive effect of different toothbrushes—soft-cross bristles (CB), extra-soft-parallel bristles (ES), and soft-parallel bristles (S)—on the surface roughness of conventional (C) and resin-modified (V) glass ionomer cements in vitro. Eight specimens of each material were prepared for each group: (1) V and CB; (2) V and ES; (3) V and S; (4) C and CB; (5) C and ES; and (6) C and S. Specimens were stored at 37°C/24 hours and 100% humidity, polished, and initially analyzed with a surface roughness-measuring device. Next, they were fixed to the tooth-brushing device and abraded via toothbrushes, using a dentifrice slurry, performed at 250 cycles/minute with a 200 g load. The specimens were washed, dried, and analyzed identically with the same device. There was no significant interaction between material and toothbrush types. After tooth-brushing, V showed significantly higher surface roughness than C and CB and created higher surface roughness than S. No difference was observed between these toothbrushes and ES. Regardless of the toothbrush type used, resin-modified glass ionomer cement showed the highest roughness values.

Keywords: GLASS IONOMER CEMENT; TOOTH-BRUSHING ABRASION; SURFACE ROUGHNESS

Document Type: Research article

Affiliations: 1: Department of Restorative Dentistry - Dental Materials Program, Dental School of Piracicaba, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil 2: Department of Restorative Materials-Dental Materials Area, Dental School of Piracicaba, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil 3: Department of Pediatric Dentistry, Dental School of Piracicaba, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil

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