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dc.contributor.advisorIwasaki, Laura, advisoren
dc.contributor.authorGossett, Lauren Ashley
dc.date.issued2012-11-05
dc.date.submitted2012 Summeren
dc.descriptionTitle from PDF of title page, viewed on November 5, 2012en
dc.descriptionThesis advisors: Laura Iwasaki and Mary P. Walkeren
dc.descriptionVitaen
dc.descriptionIncludes bibliographic references (p. 59-66)en
dc.descriptionThesis (M.S.)--School of Dentistry. University of Missouri--Kansas City, 2012en
dc.description.abstractThis study evaluated effects of refrigerant spray and crosshead speed on orthodontic composite resin shear debond strength and Adhesive Remnant Index (ARI) after bond failure. Orthodontic brackets were bonded to forty paired extracted mandibular third molars. Pairs were divided into experimental and control groups, with and without refrigerant spray prior to debond, respectively. Each group was further divided into two subgroups based on crosshead speed of 1 or 10 mm/min. Bracket shear debond strength was tested with a universal testing machine and ARI scores assessed. Results showed no statistically significant difference for shear debond strength or ARI score as a function of refrigerant spray usage. Statistically significant differences were shown for shear debond strength and ARI score as a function of crosshead speed. As crosshead speed increased, shear debond strength and ARI score both increased. These results indicate that application of refrigerant spray prior to bracket debonding is not beneficial.en_US
dc.description.tableofcontentsIntroduction -- Materials and methods -- Results -- Discussion -- Conclusions -- -- Literature cited -- Appendix 1. IRB approval -- Appendix 2. Bracket temperature pilot data -- Appendix 3. Bracket debond time pilot data -- Appendix 4. Bracket composite layer temperature pilot dataen
dc.format.extentx, 84 pagesen
dc.identifier.urihttp://hdl.handle.net/10355/15982
dc.publisherUniversity of Missouri--Kansas Cityen
dc.subject.lcshDental cementsen
dc.subject.lcshDental bondingen
dc.subject.meshDental Cementsen
dc.subject.meshDental Bondingen
dc.subject.otherThesis -- University of Missouri--Kansas City -- Dentistryen
dc.titleEffect of refrigerant spray on orthodontic composite resin-bracket debond strength and associated adhesive remnant indexen_US
dc.typeThesisen_US
thesis.degree.disciplineOral Biologyen
thesis.degree.grantorUniversity of Missouri--Kansas Cityen
thesis.degree.levelMastersen
thesis.degree.nameM.S.en


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