Date on Master's Thesis/Doctoral Dissertation


Document Type

Master's Thesis

Degree Name



Oral Biology

Committee Chair

Johnson, Baxter Edwin


Dental enamel--Solubility; Dental adhesives


Background and significance: Even with the advent of direct bonding, decalcification remains a problem in orthodontics today. Glass ionomer cements have been used in dentistry for fluoride release for years and may have beneficial use in orthodontics to reduce decalcification. Purpose: This study aims to evaluate the incidence in decalcification between orthodontic patients bonded with either composite resin or resin modified glass ionomer (RMGI) cements. Varying levels of hygiene and treatment time were also evaluated. Methods: Intraoral pre-treatment and post-treatment photographs from patients bonded with either RMGI or composite resin were evaluated for changes in decalcification. Patients were treated by the same practitioner and the data was gathered retrospectively. Results: Patients bonded with glass ionomer cement demonstrated significantly less decalcification than those bonded with composite resin. Treatment time and hygiene were not significant. Conclusions: Glass ionomer cements used for direct bonding reduce decalcification in orthodontic patients on a fluoride protocol.