Date of Award

Spring 6-3-2021

Degree Type


Degree Name

MSOB (Master of Science in Oral Biology)

Primary Advisor

Joseph Fiorellini DMD DMSc


Background: Prosthetically compromised teeth (e.g., insufficient ferrule) and hopeless teeth (e.g., due to extensive caries or endodontic failure) present a number of restorative treatment challenges. In cases with pristine adjacent teeth and intact periodontium or a hopeless tooth that demands vertical alveolar bone augmentation, forced eruption is a conservative treatment approach. Current evidence in the literature is lacking in regard to the long-term (> 1 year) prognosis of forced erupted teeth.

Aim: To evaluate the long-term (>1 year) stability of teeth that have been orthodontically treated with forced eruption for restorative purposes. Materials and Methods: This study is an investigator-initiated, retrospective. clinical study. Inclusion criteria: Patients receiving orthodontic extrusion in PDM between the years of 2012 to 2020, all ages, systemically healthy, medical records consist of radiographs, clinical pictures prior to and after extrusion. Exclusion Criteria: patients with active periodontal disease or patients with acute endodontic infection. Radiographic measurements were done before and after treatment to measure 1) crown margin to the crest of the alveolar bone, 2) root length. Clinical parameters measured included 1) activation time, 2) retention time, 3) total treatment time, 4) additional treatment required to restore the teeth, 5) pre/post-surgical complication, and 6) associations between clinician training and complication rate.

Results: Twenty-five (25) participants with a total of thirty-six (36) orthodontically extruded teeth were included in the study. Mean activation time was 5.11 weeks. Mean retention before prosthetics and tooth extraction was 5.11 weeks and 12.3 weeks, respectively. The overall treatment period ranged from 3-16 months with a mean of 7.05 months. 96.0% survival rate of force erupted teeth and 4.0% failure rate due to non-restorable caries. When more than 1.0 mm

extrusion was completed, there was a statistically higher chance that the tooth required additional surgeries (p < 0.05). Complications during treatment was higher in clinicians who did not have orthodontic training (43.0%) when compared to clinicians with orthodontic training (10.0%). Conclusion: Forced eruption for prosthetic treatment and implant site development is a viable and successful treatment option in the long-term.

Included in

Dentistry Commons