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

Publication date: 2008-05-01

More about this publication?

• Acquired after the merger between the American Society of Dentistry for Children and the American Academy of Pediatric Dentistry in 2002, the Journal of Dentistry for Children (JDC) is an internationally renowned journal whose publishing dates back to 1934. Published three times a year, JDC promotes the practice, education and research specifically related to the specialty of pediatric dentistry. It covers a wide range of topics related to the clinical care of children, from clinical techniques of daily importance to the practitioner, to studies on child behavior and growth and development. JDC also provides information on the physical, psychological and emotional conditions of children as they relate to and affect their dental health.
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