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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 …
Bonding Properties Of Newly Erupted And Mature Human Premolars, Diana Marie-Skinner Almy
Bonding Properties Of Newly Erupted And Mature Human Premolars, Diana Marie-Skinner Almy
Theses and Dissertations
Following eruption of a tooth into the oral cavity, enamel is thought to continue to calcify. The continued calcification and maturation of enamel is described as "post-eruptive enamel maturation." It is believed that an observed decrease in enamel pore size and increase in the calcification of enamel matrix over time can be attributed to this process. In recent years, there has been a significant increase in the number of adult patients seeking orthodontic treatment. Since orthodontic attachments are bonded directly to the etched enamel using composite resin, post-eruptive enamel maturation may affect the bonding process. The purpose of this study …