Effect of toothbrushing with different manual toothbrushes on the shear bond strength of orthodontic brackets
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Data
2010-07-01
Autores
de Oliveira, Guilherme José Pimentel Lopes [UNESP]
Pavone, Chaine [UNESP]
Costa, Maurício Ribeiro [UNESP]
Marcantonio, Rosemary Adriana Chierici [UNESP]
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Resumo
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.
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Palavras-chave
Orthodontic brackets, Primary prevention, Toothbrushing, resin cement, dental bonding, dental care, human, instrumentation, mechanical stress, methodology, nonparametric test, orthodontic device, shear strength, tooth brushing, Dental Bonding, Dental Stress Analysis, Humans, Orthodontic Brackets, Resin Cements, Shear Strength, Statistics, Nonparametric, Stress, Mechanical
Como citar
Brazilian Oral Research, v. 24, n. 3, p. 316-322, 2010.