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A comparison of the stability of miniplate with bicortical screw fixation after sagittal split setback. 2000

B H Choi, and Y S Min, and C K Yi, and W Y Lee
Yonsei University and Wonju Christian Hospital, Department of Oral and Maxillofacial Surgery, Kangwon-Do, South Korea.

OBJECTIVE The objective of this study was to decide whether use of bicortical screw fixation provides sufficient stability to dispense with intermaxillary fixation. METHODS Thirty consecutive patients who had undergone surgical setback of the mandible by means of bilateral sagittal split ramus osteotomies were studied. Group 1 (15 patients) had miniplate fixation with intermaxillary fixation for 6 weeks, and group 2 (15 patients) had bicortical screw fixation and immediate postoperative function. The 2 groups were evaluated radiographically for postsurgical changes of pogonion in the early (6 weeks) phase. RESULTS The results showed that there were no significant differences between the 2 groups. Overall, there was good stability in both groups. CONCLUSIONS The use of bicortical screw fixation after sagittal split setback of the mandible provides sufficient stability to dispense with intermaxillary fixation.

UI MeSH Term Description Entries
D007103 Immobilization The restriction of the MOVEMENT of whole or part of the body by physical means (RESTRAINT, PHYSICAL) or chemically by ANALGESIA, or the use of TRANQUILIZING AGENTS or NEUROMUSCULAR NONDEPOLARIZING AGENTS. It includes experimental protocols used to evaluate the physiologic effects of immobility. Hypokinesia, Experimental,Experimental Hypokinesia,Experimental Hypokinesias,Hypokinesias, Experimental
D008297 Male Males
D008334 Mandible The largest and strongest bone of the FACE constituting the lower jaw. It supports the lower teeth. Mylohyoid Groove,Mylohyoid Ridge,Groove, Mylohyoid,Grooves, Mylohyoid,Mandibles,Mylohyoid Grooves,Mylohyoid Ridges,Ridge, Mylohyoid,Ridges, Mylohyoid
D011378 Prognathism A condition marked by abnormal protrusion of the mandible. (Dorland, 27th ed) Prognathisms
D001860 Bone Plates Implantable fracture fixation devices attached to bone fragments with screws to bridge the fracture gap and shield the fracture site from stress as bone heals. (UMDNS, 1999) Bone Plate,Plate, Bone,Plates, Bone
D001863 Bone Screws Specialized devices used in ORTHOPEDIC SURGERY to repair bone fractures. Bone Screw,Screw, Bone,Screws, Bone
D002508 Cephalometry The measurement of the dimensions of the HEAD. Craniometry
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths

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