Author(s): Zuanon, Ângela Cristina Cilense [UNESP] ; Santos-Pinto, Lourdes [UNESP] ; Azevedo, Elcilaine Rizzato [UNESP] ; Lima, Luciana Monti [UNESP]
Date: 2022
Persistent ID: http://hdl.handle.net/11449/225388
Origin: Oasisbr
Subject(s): Dental enamel; Microabrasion; Primary teeth
Made available in DSpace on 2022-04-28T20:48:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-12-01
Purpose: This study's purpose was to assess the amount of dental enamel loss on primary incisors after manual or mechanical microabrasion with a phosphoric acid/pumice paste. Methods: Ten exfoliated primary maxillary incisors were bisected faciolingually and the resulting 20 halves were randomly assigned to 2 groups: group 1 (n=I0)-manual technigue (plastic spatula); and group 2 (n=I0)-mechanical technigue (rubber cup attached to a low-speed handpiece). Microabrasion was performed on the buccal surface using an abrasive paste prepared with 37% phosphoric acid and pumice. Ten 20-second applications alternated with 20-second risings were performed in each group. Enamel thickness measurements made under stereomi-croscopy before and after microabrasion were analyzed statistically by analysis of variance and pairwise ttest Results: There was a statistically significant difference (P=.003) between the manual and mechanical technigues. The mechanical technigue produced a mean enamel loss of 274.16 μm (66% of total enamel thickness), while the mean enamel loss with the manual technigue was 152.59 μm (39% of total enamel thickness). Conclusion: Manual microabrasion using a plastic spatula removed less enamel, but was sufficient to eliminate most superficial stains and defects, and may be a viable option for the microabrasive technigue on primary teeth.
Department of Pediatric Dentistry School of Dentistry of Araraquara Sao Paulo State University (UNESP), Sao Paulo
Master's Degree Program in Dental Sciences School of Dentistry of Araraquara Sao Paulo State University (UNESP), Sao Paulo
Program in Dental Sciences School of Dentistry of Araraquara Sao Paulo State University (UNESP), Sao Paulo
Department of Pediatric Dentistry School of Dentistry of Araraquara Sao Paulo State University (UNESP), Sao Paulo
Master's Degree Program in Dental Sciences School of Dentistry of Araraquara Sao Paulo State University (UNESP), Sao Paulo
Program in Dental Sciences School of Dentistry of Araraquara Sao Paulo State University (UNESP), Sao Paulo
