In vitro lingual bracket evaluation of indirect bonding with plasma arc, LED and halogen light
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Data
2010-02-01
Autores
Magno, A. F F [UNESP]
Martins, R. P. [UNESP]
Vaz, Luis Geraldo [UNESP]
Martins, Lidia Parsekian [UNESP]
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Resumo
Authors - Magno AFF, Martins RP, Vaz LG, Martins LP Objectives - Evaluate the shear bond strength (SBS) and the adhesive remnant index (ARI) of indirect bonded lingual brackets using xenon plasma arc light, light-emitting diode (LED) and conventional quartz-tungsten-halogen light. Material and Methods - Lingual brackets were bonded indirectly to 60 premolars divided to three groups according to the curing light used: Group 1, plasma arc for 6 s; Group 2, LED for 10 s; and Group 3, halogen light for 40 s. After bonding, the specimens were subjected to a shear force until debonding. The debonding pattern was assessed and classified according to the ARI scores. The mean shear bond strengths were accessed by anova followed by the Student-Newman-Keuls test for multiple comparisons. ARI scores were assessed using the chi-square test. Results - The three groups showed significant differences (p < 0.001), with the averages of group 1 < group 2 < group 3. Groups showed no differences regarding ARI scores. Conclusion - Bonding lingual brackets indirectly with plasma arc, during 60% of the time used for the LED, produced lower SBS than obtained with the latter. Using LED during 25% of the time of the halogen light produced lower SBS than obtained with the latter. These differences did not influence the debonding pattern and are clinically acceptable according to the literature. © 2010 John Wiley & Sons A/S.
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Palavras-chave
Dental bonding, Light-cured, Orthodontic brackets, Orthodontics, Shear bond strength, comparative study, dental bonding, dental care, dental equipment, evaluation, human, orthodontic device, shear strength, Curing Lights, Dental, Dental Bonding, Light-Cured, Dental Stress Analysis, Humans, Orthodontic Brackets, Shear Strength
Como citar
Orthodontics and Craniofacial Research, v. 13, n. 1, p. 48-55, 2010.