Reconstruction of partial maxillary defect with intraoral distraction osteogenesis assisted by miniscrew implant anchorages

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• 作者：Yimiao Feng ; Bing Fang ; Guofang Shen ; Yunhui Xia ; XinTian Lou
• 刊名：Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology
• 出版年：2010
• 出版时间：September 2010
• 年：2010
• 卷：110
• 期：3
• 页码：e1-e7
• 全文大小：1280 K

文摘

Objective

The paper reports a custom-made trifocal transport distractor assisted by miniscrew implant anchorages (MIAs) used to reconstruct maxillary defects and evaluates the clinical results of function and esthetics.

Study design

Eight patients aged 19-43 years who suffered regional maxillary defects were involved. Each one underwent segmental bone excision of the maxilla and distraction osteogenesis (DO) in the defect region by a custom-made interoral 3-dimensional distractor which was activated by orthodontic elastic force assisted by MIAs at the rate of ≤1 mm/d.

Results

New arced bone was found and filled the defect. The average amount of distraction was 13.6 mm (range 10-18 mm). Occlusion relationship was restored via this method, with subsequent placement of oral implants and prosthesis. The regenerated bony segment can be bent to form a curved arch.

Conclusion

A combined orthodontics and DO technique can be used to treat partial maxillary defects successfully.