Otro
Effect of toothbrushing with different manual toothbrushes on the shear bond strength of orthodontic brackets
Registro en:
Brazilian Oral Research, v. 24, n. 3, p. 316-322, 2010.
1806-8324
1807-3107
10.1590/S1806-83242010000300010
S1806-83242010000300010
2-s2.0-77957944019.pdf
2-s2.0-77957944019
Autor
de Oliveira, Guilherme José Pimentel Lopes
Pavone, Chaine
Costa, Maurício Ribeiro
Marcantonio, Rosemary Adriana Chierici
Resumen
The aim of this study was to evaluate the effect of brushing with a Colgate 360° or Oral B Indicator 35 toothbrush on the shear bond strength of orthodontic brackets bonded to extracted human teeth. The bristle wear and bristle tip morphology were also examined after simulated tooth-brushing. Orthodontic brackets (Roth-P/1 st and 2 nd pre-molar S/D- Slot 0.18) were bonded (Transbond XT ®) to the smoothest surface of each of 45 extracted human molar and premolar teeth. Test specimens were randomly divided into three groups: Group 1, control group with no brushing; Group 2, brushing with the Oral B Indicator 35; Group 3, brushing with the Colgate 360°. Samples were adapted to a machine that simulated tooth-brushing. The bond strength of each bracket to each tooth was assessed with a mechanical testing machine. The bristle wear and bristle tip morphology indices were also assessed. Statistically significant differences were defined for p ≤ 0.05. The average bond strengths (range: 90.18-90.89 kgf/cm 2) did not differ among the three groups. The Colgate 360° showed less bristle wear and a better bristle tip morphology than the Oral B Indicator 35 toothbrush. However, use of either toothbrush did not decrease the bond strength of the orthodontic brackets. Therefore, patients undergoing orthodontic therapy can safely use either toothbrush.