Abstract

Background: A method to accomplish orthodontic anchorage using a hydroxyapatite-coated disk that is placed below the periosteum in the mid-palatal area has been developed (OnPlant, Nobel Biocare, Yorba Linda, CA, USA). This report describes the early to 8-month healing events of the first 8 consecutive cases of placement of the OnPlant device at the Advanced Periodontics Clinic at Loma Linda University School of Dentistry. In addition, it presents the results of a questionnaire on how the patients experienced the various procedures. A radiographic analysis of the side of placement of the device was performed.

Methods: At 2 weeks and at 4 and 8 months postoperatively, presence or absence of exposure of the device, mobility using gentle finger palpation and fistulation were evaluated. At 8 months, the inflammatory status of the tissue abutment interface was determined by presence or absence of bleeding and/or suppuration on probing. Patients' experience of pain/discomfort and acceptance of the treatment were evaluated by the use of a Visual Analog Scale (VAS). The shape of the palate in the area of placement and bone thickness in the anterior third of the palate was evaluated using Cone Beam Computerized Tomography images.

Results: In 7 of the 8 cases, the device became stable and could be used for orthodontic anchorage. At the 8-month time point, none of the 7 devices showed any plaque or bleeding/suppuration on stimulation with a periodontal probe. In 1 case, infection occurred and the device had to be removed. Patients reported little discomfort during the treatment in the majority of cases and stated that opting for the OnPlant treatment was the right choice. In all of the cases sufficient space between the lateral walls of the palate could be found radiographically to place the device on an even bony surface.

Conclusions: This pilot study suggests that placement of the OnPlant device quite predictably leads to uneventful healing and stability of the device. Further studies with larger numbers of subjects are necessary to substantiate these findings as well as to determine the usefulness of this device as an orthodontic anchorage.

LLU Discipline

Periodontics

Department

Periodontics

School

Graduate School

First Advisor

Tord Lundgren

Second Advisor

Joseph Caruso

Third Advisor

Max Crigger

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

2003

Date (Title Page)

12-2003

Language

English

Library of Congress/MESH Subject Headings

Orthodontic Anchorage Procedures -- methods; Wound Healing; Orthodontic Appliances

Type

Thesis

Page Count

vii; 26

Digital Format

PDF

Digital Publisher

Loma Linda University Libraries

Usage Rights

This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.

Collection

Loma Linda University Electronic Theses and Dissertations

Collection Website

http://scholarsrepository.llu.edu/etd/

Repository

Loma Linda University. Del E. Webb Memorial Library. University Archives

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