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Full-Text Articles in Medicine and Health Sciences
Orthodontic Bracket Bond Strength Using Self-Etching Primer With Or Without Pumice Or Acid Etch Pretreatment, Ana Paula Decastro
Orthodontic Bracket Bond Strength Using Self-Etching Primer With Or Without Pumice Or Acid Etch Pretreatment, Ana Paula Decastro
Theses and Dissertations
The purpose of this study was to compare the shear bond strength of orthodontic brackets to enamel in four bonding protocols: SEP without prior pumicing (None), Pre-etch and SEP without prior pumicing (Pre-etch), control: SEP with prior pumicing (Pumice), and Pre-etch and SEP with prior pumicing (Both). 80 extracted bovine incisors were randomly divided into 4 groups of 20, and brackets were bonded under the different experimental conditions. Debonding force was measured with an Instron universal testing machine. A two-way ANOVA comparing the four groups indicated that there was a significant difference in debonding force (P = 0.001). The SEP …
Treatment Outcomes And Retention In Medicaid And Non-Medicaid Orthodontic Patients, Ashkan Ghaffari
Treatment Outcomes And Retention In Medicaid And Non-Medicaid Orthodontic Patients, Ashkan Ghaffari
Theses and Dissertations
Medicaid orthodontic patients have been shown to miss more appointments and break more appliances than self-pay patients, indicating a greater tendency toward non-compliance. Lack of compliance during the post-treatment phase can be detrimental to retention. The purpose of this study was to determine whether there is a difference in PAR score changes between Medicaid and non-Medicaid patients during and after orthodontic treatment. PAR scores were determined using study models of 43 Medicaid and 39 non-Medicaid patients before and at the end of active treatment, and 24 Medicaid and 42 non-Medicaid patients at the end of treatment and at an average …