Shear bond strength of orthodontic brackets bonded using halogen light and light-emitting diode at different debond times

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorDi Nicoló, Rebeca
dc.creatorde Araujo, Maria Amelia Maximo
dc.creatorAlves, Levy Anderson César
dc.creatorde Assunçao e Souza, Rodrigo Othavio
dc.creatorda Rocha, Daniel Maranha
dc.date2014-05-27T11:24:36Z
dc.date2016-10-25T18:28:15Z
dc.date2014-05-27T11:24:36Z
dc.date2016-10-25T18:28:15Z
dc.date2010-01-01
dc.date.accessioned2017-04-06T01:40:13Z
dc.date.available2017-04-06T01:40:13Z
dc.identifierBrazilian Oral Research, v. 24, n. 1, p. 64-69, 2010.
dc.identifier1806-8324
dc.identifier1807-3107
dc.identifierhttp://hdl.handle.net/11449/71534
dc.identifierhttp://acervodigital.unesp.br/handle/11449/71534
dc.identifier10.1590/S1806-83242010000100011
dc.identifierS1806-83242010000100011
dc.identifier2-s2.0-77955523074.pdf
dc.identifier2-s2.0-77955523074
dc.identifierhttp://dx.doi.org/10.1590/S1806-83242010000100011
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/892510
dc.descriptionThe aim of this in vitro study was to compare the photoactivation effects of QTH (Quartz-Tungsten-Halogen) and LED (Light-Emitting Diode) on the SBS (Shear Bond Strength) of orthodontic brackets at different debond times. Seventy-two bovine lower incisors were randomly divided into two groups according to the photoactivation system used (QTH or LED). The enamel surfaces were conditioned with Transbond self-etching primer, and APC (Adhesive Pre-Coated) brackets were used in all specimens. Group I was cured with QTH for 20 s and Group II with LED for 10 s. Both groups were subdivided according to the different experimental times after bonding (immediately, 24 h and 7 days). The specimens were tested for SBS and the enamel surfaces were analyzed according to the Adhesive Remnant Index (ARI). The statistical analysis included the Tukey's test to evaluate the main effects of photoactivation and debond time on SBS. The Chi-square test was used to compare the ARI values found for each group, and no statistically significant difference was observed. The debond time of 7 days for QTH photoactivation showed statistically greater values of SBS when compared to the immediate and 24 h periods. There was no statistically significant difference between the QTH and LED groups immediately and after the 24 h period. In conclusion, bonding orthodontic brackets with LED photoactivation for 10 s is suggested because it requires a reduced clinical chair time.
dc.languageeng
dc.relationBrazilian Oral Research
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectCuring lights
dc.subjectDental
dc.subjectDental debonding
dc.subjectDental etching
dc.subjectOrthodontic brackets
dc.subjectresin cement
dc.subjectanimal
dc.subjectcattle
dc.subjectdental acid etching
dc.subjectdental bonding
dc.subjectdental debonding
dc.subjectdental equipment
dc.subjectmaterials testing
dc.subjectmethodology
dc.subjectorthodontic device
dc.subjectradiation exposure
dc.subjectshear strength
dc.subjectsurface property
dc.subjecttime
dc.subjectAcid Etching, Dental
dc.subjectAnimals
dc.subjectCattle
dc.subjectCuring Lights, Dental
dc.subjectDental Debonding
dc.subjectLight-Curing of Dental Adhesives
dc.subjectMaterials Testing
dc.subjectOrthodontic Brackets
dc.subjectResin Cements
dc.subjectShear Strength
dc.subjectSurface Properties
dc.subjectTime Factors
dc.titleShear bond strength of orthodontic brackets bonded using halogen light and light-emitting diode at different debond times
dc.typeOtro


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