Residual Pumice: Assessing a Potential Contaminant in Orthodontic Bonding
Abstract
Objective: To assess the effect of clinically-observed residual prophylaxis pumice on orthodontic shear bond strength when using a self-etching primer bonding protocol. Materials and Methods: 100 bovine teeth were randomly divided into five groups (N=20) according to prophylaxis protocol: control (no pumice prophylaxis), pumice flour with mechanical debridement, pumice flour without debridement, pre-mixed pumice with mechanical debridement, and pre-mixed pumice without mechanical debridement. After prophylaxis, brackets were bonded using a self-etching primer bonding technique (3M Unitek Transbond Plus Self-Etching Primer). Samples were tested for bond strength 48 hours after bonding using a universal testing machine. Data were analyzed using analysis of variance (ANOVA) with significance level at 0.05.Results: No significant differences were found between the five groups (p=0.09). Using a 2-factor ANOVA on the experimental groups, there was no statistically significant effect for the type of pumice (p=0.157), mechanical debridement (p=0.184), or their interaction (p=0.087). Conclusions: When using a self-etching primer bonding protocol in vitro, orthodontic shear bond strengths are not influenced by the use of pumice prophylaxis, the tested formulations of pumice, or the presence of residual pumice clinically-observed on enamel prior to bonding.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 16, 2021
- Accession Number
- AD1136653
Entities
People
- Ian J. Kaemmer
Organizations
- 59th Medical Wing