Premium
The stability of facial osteotomies. Part 5. Maxillary advancement with miniplate and screw fixation
Author(s) -
Hoffman Gary R.,
Moloney Frank B.
Publication year - 1996
Publication title -
australian dental journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.701
H-Index - 71
eISSN - 1834-7819
pISSN - 0045-0421
DOI - 10.1111/j.1834-7819.1996.tb05650.x
Subject(s) - medicine , maxilla , fixation (population genetics) , orthodontics , dentofacial deformity , dentistry , osteotomy , initial stability , orthognathic surgery , surgery , implant , population , environmental health
Surgical repositioning of the dento‐skeletal components of the middle‐third of the face, combined with appropriate orthodontic treatment, can be used to improve function and aesthetics. However, the attainment of three‐dimensional stability following corrective jaw surgery continues to be a major problem in the postsurgical period. This paper examines the short‐term (six weeks postoperative) and long‐term (12 months postoperative) horizontal skeletal stability of Le Fort I maxillary advancement in 15 patients. The mean horizontal advancement of the maxilla was 8.76 ± 0.99 mm. Six weeks later, a mean relapse of 0.22 ± 0.19 mm was identified. The mean relapse at long‐term follow‐up was 0.61 ± 0.26 mm (6.96%). These results indicate that rigid miniplate and screw fixation of Le Fort I osteotomy undertaken to correct horizontal mid‐dentofacial deficiency is both statistically and surgically predictable and stable when reviewed up to twelve months after surgery.