하악지 시상절단술시 견고 고정 나사의 골편간/골내 길이 및 비율에 대한 연구
A STUDY ON BONE-CONTACT TO INTER-SEGMENTAL LENGTH RATIO OF RIGID FIXATION SCREWS USED IN BSSRO FOR MANDIBULAR SETBACK
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Objective: To evaluate the ratio between bone-contact length and inter-segmental length of the rigid fixation screw used in bilateral sagittal split ramus osteotomy (BSSRO) for mandibular setback. Material and Methods: Records of 40 patients with Class III malocclusion were selected. 20 of them had BSSRO, while the other 20 had BSSRO with maxillary LeFort I osteotomy. All of the patients had three noncompressive bicortical screws inserted at the gonial angle through transcutaneous approach. Two screws were inserted antero-posteriorly above inferior alveolar nerve and one screw was inserted below. The lengths of bone-contact and that of inter-segmental part were measured using cone-beam computed tomography. Ratio between these two measured lengths was calculated. Results: Both bone-contact and inter-segmental lengths were longer in BSSRO group than in BSSRO with maxillary LeFort I osteotomy group. Ratio of bone-contact to inter-segmental length was lower in BSSRO group than in BSSRO with Lefort I group. Both bone-contact and inter-segmental lengths were longer at the antero-superior position than at the inferior position. However, their ratio showed little difference. Conclusion: This study suggest that stability of screws in BSSRO group was greater than in BSSRO with Lefort I group. Stability of screws at the antero-superior position was greater than at the inferior position. Ratio of bone-contact to inter- segmental lengths was 0.2 in average.
Abstract
Objective: To evaluate the ratio between bone-contact length and inter-segmental length of the rigid fixation screw used in bilateral sagittal split ramus osteotomy (BSSRO) for mandibular setback. Material and Methods: Records of 40 patients with Class III malocclusion were selected. 20 of them had BSSRO, while the other 20 had BSSRO with maxillary LeFort I osteotomy. All of the patients had three noncompressive bicortical screws inserted at the gonial angle through transcutaneous approach. Two screws were inserted antero-posteriorly above inferior alveolar nerve and one screw was inserted below. The lengths of bone-contact and that of inter-segmental part were measured using cone-beam computed tomography. Ratio between these two measured lengths was calculated. Results: Both bone-contact and inter-segmental lengths were longer in BSSRO group than in BSSRO with maxillary LeFort I osteotomy group. Ratio of bone-contact to inter-segmental length was lower in BSSRO group than in BSSRO with Lefort I group. Both bone-contact and inter-segmental lengths were longer at the antero-superior position than at the inferior position. However, their ratio showed little difference. Conclusion: This study suggest that stability of screws in BSSRO group was greater than in BSSRO with Lefort I group. Stability of screws at the antero-superior position was greater than at the inferior position. Ratio of bone-contact to inter- segmental lengths was 0.2 in average.
참고문헌 (20)
- Schuchardt K, "Ein Beitrag Zur Chirurgichen Kieferorthopadie unter Beruechsichtigung iher Bedeutung feur die Behabdlung angeborener and erworbener kieferdeformitaeten bei Soldaten", Dt. ZahnMund-Kieferheilk, 9, pp.73~79 (1942)
- Trauner R, "The surgical correction of mandibular prognathism and retrognathia with consideration of genioplasty. I. Surgical procedures to correct mandibular prognathism and reshaping of the chin", Oral Surg Oral Med Oral Pathol, 10, pp.677~689 (1957)
- Dal Pont G, "Retromolar osteotomy for the correction of prognathism", J Oral Surg Anesth Hosp Dent Serv, 19, pp.42~47 (1961)
- Steinhauser EW, "Advancement of the mandible by sagittal ramus split and suprahyoid myotomy", J Oral Surg, 31, pp.516~521 (1973)
- Rubens BC, "Skeletal stability following sagittal split osteotomy using monocortical miniplate internal fixation", Int J Oral Maxillofac Surg, 17, pp.371~376 (1988)
- Spiessl B, "Osteosynthesis in sagittal osteotomy using the Obwegeser-Dal Pont method", Fortschr Kiefer Gesichtschir, 18, pp.145~148 (1974)
- Bae JO, "Comparative Study of Skeletal Relapse According to the Fixation Method after BSSRO for Mandibular Setback", J Korean Assoc Maxillofac Plast Reconstr Surg, 22, pp.184~190 (2000)
- Souyris F, "Sagittal splitting and bicortical screw fixation of the ascending ramus", J Maxillofac Surg, 6, pp.198~203 (1978)
- Kundert M, "Condylar displacement after sagittal splitting of the mandibular rami. A short-term radiographic study", J Maxillofac Surg, 8, pp.278~287 (1980)
- Jeter TS, "Modified techniques for internal fixation of sagittal ramus osteotomies", J Oral Maxillofac Surg, 42, pp.270~272 (1984)
- Tsiklakis K, "Radiographic examination of the temporomandibular joint using cone beam computed tomography", Dentomaxillofac Radiol, 33, pp.196~201 (2004)
- Niederdellmann H, "Set screws. Aids in orthodontic surgery", Dtsch Z Mund Kiefer Gesichtschir, 8, pp.62~63 (1984)
- Obeid G, "Optimal placement of bicortical screws in sagittal split-ramus osteotomy of mandible", Oral Surg Oral Med Oral Pathol, 71, pp.665~669 (1991)
- Reitzik M, "Cortex-to-cortex healing after mandibular osteotomy", J Oral Maxillofac Surg, 41, pp.658~663 (1983)
- Epker BN, "Mechanisms of early skeletal release following surgical advancement of the mandible", Br J Oral Surg, 20, pp.175~182 (1982)
- Ellis E, "Stability two years after mandibular advancement with and without suprahyoid myotomy: an experimental study", J Oral Maxillofac Surg, 41, pp.426~437 (1983)
- Becelli R, "Complications of bicortical screw fixation observed in 482 mandibular sagittal osteotomies", J Craniofac Surg, 15, pp.64~68 (2004)
- Ochs MW, "Bicortical screw stabilization of sagittal split osteotomies", J Oral Maxillofac Surg, 61, pp.1477~1484 (2003)
- Chuong CJ, "Mechanical characteristics of the mandible after bilateral sagittal split ramus osteotomy: comparing 2 different fixation techniques", J Oral Maxillofac Surg, 63, pp.68~76 (2005)
- Smith BR, "Mandibular anatomy as it relates to rigid fixation of the sagittal ramus split osteotomy", J Oral Maxillofac Surg, 49, pp.222~226 (1991)