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


METHODS
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 <or=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.


CONCLUSIONS
A combined orthodontics and DO technique can be used to treat partial maxillary defects successfully.
Feng
Yimiao
Y
Department of Stomatology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
Fang
Bing
B
Shen
Guofang
G
Xia
Yunhui
Y
Lou
XinTian
X
D000328:Adult; D001861:Bone Regeneration; D001863:Bone Screws; D003724:Dental Arch / Q000601:surgery*; D003758:Dental Implantation, Endosseous / Q000379:methods; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D003829:Denture, Partial; D005260:Female; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation / Q000601:surgery; D008297:Male; D008437:Maxilla / Q000601:surgery*; D013516:Oral Surgical Procedures, Preprosthetic / Q000295:instrumentation / Q000379:methods; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation; D056948:Orthognathic Surgical Procedures / Q000295:instrumentation / Q000379:methods*; D019857:Osteogenesis, Distraction / Q000295:instrumentation* / Q000379:methods; D010027:Osteotomy / Q000379:methods; D019651:Plastic Surgery Procedures / Q000295:instrumentation / Q000379:methods*; D014143:Traction / Q000379:methods; D016896:Treatment Outcome; D055815:Young Adult