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STATEMENT
Issue: 01/2011 - H. Wehrbein - F. P. Strietzel
The use of implants for skeletal anchorage in orthodontics

F. P. Strietzel1, H. Wehrbein2

Introduction

Endosseous implants for orthodontic anchorage are used more and more frequently in orthodontic treatment for movement of larger groups of teeth or single teeth without loading other teeth. Also, in situations with no or only very limited existing conventional anchorage options in the case of hypodontia, after tooth loss or in patients with periodontally compromised teeth, implants for orthodontic anchorage provide an alternative to extraoral anchorage.

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WISSENSCHAFTLICHE ABSTRACTS
Issue: 02/2001 - F. P. Strietzel - R. Semmler
Screw implants with expansive threads - clinical examinations

Summary:
Clinical and radiological periimplant findings in 51 patients (18 male and 33 female) treated with Pitt Easy® Bio Oss® implants were evaluated in a crosssectional retrospective study. One randomized implant per patient was examined. The implants had been inserted and loaded between 1992 and 1998. 34 patients revealed no pathological clinical symptoms, 13 revealed a plaque index (PI) of 1 or 2. In 23 patients a vertical periimplant bone defect of 1 up to 4 mm was found. Significant correlations were found between the extent of vertical bone loss and the insertion site concerning the upper or lower jaw (p = 0,04) and application of indication extending procedures (p = 0,000) respectively. The Pitt Easy® Bio Oss® implant system is successfully applicable with careful implant bed preparation considering various bone qualities in different areas of the alveolar ridge. Indication extending procedures, especially bone condensing at the implant site seem to limit the prognosis of implants with expansive threads in unfavourable anatomic conditions.

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