Screw osteosynthesis compared with wire osteosynthesis in advancement genioplasty: a retrospective study of skeletal stability.
OBJECTIVE
To compare the skeletal stability of wire and screw fixation after advancement genioplasty.


METHODS
Retrospective study.


METHODS
Teaching hospital and private practice, South Africa.


METHODS
40 Patients who required advancement genioplasty, 20 in each group.


METHODS
Advancement genioplasty measurements made on cephalometric radiographs before and immediately after operation, and at least 6 months later.


METHODS
Comparison of horizontal and vertical measurements.


RESULTS
In the screw (rigid) group mean horizontal advancement was 6.3 mm followed by a relapse of 0.3 mm during the follow up period. The corresponding figures for the wire (non-rigid) group were 5.8 and 0.5 mm. The two differed significantly in the degree of vertical change but the result is clinically unimportant. There was no difference in the degree of horizontal change.


CONCLUSIONS
There was no difference in skeletal stability between the two groups.
Reyneke
J P
JP
Division of Maxillofacial and Oral Surgery, University of the Witwatersrand, Johannesburg, South Africa.
Johnston
T
T
van der Linden
W J
WJ
D000293:Adolescent; D000328:Adult; D001863:Bone Screws; D001864:Bone Wires; D002508:Cephalometry; D002680:Chin / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D010027:Osteotomy / Q000295:instrumentation*; D011859:Radiography; D019651:Plastic Surgery Procedures; D012008:Recurrence; D012189:Retrospective Studies; D013193:Stainless Steel; D014025:Titanium; D016896:Treatment Outcome; D014716:Vertical Dimension
D013193:Stainless Steel; D014025:Titanium