All ETDs from UAB

Advisory Committee Chair

Andre Ferreira

Advisory Committee Members

Lionel Sadowsky

Firoz Rahemtulla

Document Type


Date of Award


Degree Name by School

Master of Science (MS) School of Dentistry


In recent years, the use of a variety of temporary placed implants to attain absolute anchorage has been described in the orthodontic literature. The use of temporary implants, fixed to bone, overcomes some of the limitations of traditional anchorage and their reliance on patient compliance. The purpose of this study was to evaluate factors relating to the successful placement of miniscrew temporary anchorage devices in an orthodontic clinic. The orthodontic records of patients who had miniscrews placed during their treatment at the University of Alabama at Birmingham School of Dentistry Postgraduate Orthodontic Clinic were selected. After application of the inclusion and exclusion criteria, the final study sample consisted of 32 patients who received a total of 58 miniscrew anchorage devices. The records of all 32 patients were analyzed to determine implant site, time before implant loading, experience level of clinician placing the implant, and whether the implant remained stable during the loading period. In addition, a vitality test was performed on each patient to determine the vitality of all the teeth in the quadrant where the miniscrew was placed. The overall success rate was 75.8%. Miniscrews placed in the maxilla were clinically more successful than those placed in the mandible. There was no statistically significant difference in time before miniscrew loading, patient age, and experience level of clinician. Following adjustment for multiple implant failures and successes in individual patients, experience level of the clinician placing the miniscrew became statistically significant. The experienced iii clinician had a greater expectation of success then the novice group. In addition, 100% of the teeth tested as vital. These results indicate that the placement of miniscrews can be accomplished successfully in an orthodontic clinic. This study also suggests that there is a learning curve to the placement of miniscrews and orthodontic clinicians can expect their success rates to increase as they place more miniscrews.

Included in

Dentistry Commons



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