• Maxillofacial Plastic and Reconstructive Surgery
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• 제31권4호
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• pp.319-324
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• 2009

Kole's Anterior segmental osteotomy of the mandible is commonly used to close an anterior open bite, to depress an elevated anterior dentoalveolar segment, or to retrude or advance a dentoalveolar segment. The procedure is often combined with an anterior maxillary segmental osteotomy to correct bimaxillary protrusion. We report 53-year-old woman who the extruded state of mandibular anterior alveolar segment was corrected using an mandibular anterior alveolar segmental osteotomy and dental implantation of the anterior maxilla. We planned to remove the old prosthesis, and then perform an anterior mandibular segmental osteotomy and implant restoration of the anterior maxilla. We suggest that anterior segmental osteotomy is very useful for rehabilitating edentulous patients with malaligned alveolar segment.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제12권3호
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• pp.74-80
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• 1990

This is to report a case of surgical and orthodontic of posterior scissor bite, deep bite and gummy smile by the segmental osteotomies. The surgical thechnics procedures used are Peterson's mandibular posterior segmental osteotomy, modified $K{\ddot{o}}le$ technic for mandibular anterior segment and Wunderer's maxillary anterior segmental osteotomy. The results are as follows : 1) Peterson's mandibular posterior segmental osteotomy could be achieved by the buccal approach with some difficulties in accessbility. 2) Upper and lower anterior segmental osteotomies were followed separately to correct the deep curve of Spee, deep bite and gummy smile in shortened period. 3) All alveolar segments were immobilized in preplanned position by the prefabricated palatal and lingual resin splint, therefore intermaxillary fixation was not necessary.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제13권4호
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• pp.468-475
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• 1991

Skeletal class III malocclusion with aterior deep bite is difficult to manage properly, especially in case of mild mandibular prognathism. We have designed lower anterior segmental osteotomy for improving the lower third of the facial contour. Considerable improvement of esthetic facial contour with correction of cross bite in anterior incisors was observed in patients with mandibular prognathism.

• Archives of Plastic Surgery
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• 제34권6호
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• pp.777-784
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• 2007

Purpose: For a minor degree of mandibular prognathism, mandibular anterior segmental osteotomy (ASO), usually extracting the bilateral premolars, has been performed frequently to correct malocclusion of the anterior teeth. Preoperative planning using cephalometry and a dental model is very important for such a orthognathic surgery. Depending on the specific preoperative mock surgery with the dental model, ASO, with ipsilateral unitooth extraction, is defined to be feasible and performed for ten patients. The comparisons of its preoperative and postoperative analysis of clinical photographs, dental casts, and lateral cephalograms, for soft tissue profiles, skeletal and dental relationships are described in the following, and its clinical applications are noted. Methods: From March 1, 2004, to March 31, 2006, We performed 10 mandibular ASO by extraction of ipsilateral unitooth to improve their lower facial profiles and the lip relationships. Patient age ranged from 19 to 33 years, with a mean age of 25.6 years. Two were males and eight were females. Results: All patients were satisfied with aesthetic and occlusal changes postoperatively. Significant and persistent decrease in the SNB and interincisal angle were observed in the postoperative cephalometries. The soft tissue profiles also were improved and near Ricketts's esthetic line. Other combined procedures include nine genioplasties, two rhinoplasties, and one blepharoplasty. One patient complained of transient unilateral inferior mental nerve paresthesia. There were no other significant complications or relapses throughout the follow-up period(6-20 months). Conclusion: Mandibular ASO, extracting the ipsilateral unitooth, was performed for ten patients to correct mild mandibular prognathism. The amount of setback of the mandibular anterior portion was 2 to 3 mm, and satisfactory results were obtained combined with genioplasties.

• 대한치과의사협회지
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• 제47권6호
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• pp.373-378
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• 2009

This article presents a modified palatal pedicled incision design in anterior segmental maxillary osteotomy. This method included the circumcrevicular incisions and two vertical relaxing incisions. Then, it is different from the Couper's method with vestibular horizontal incision and other anterior segmental osteotomy techniques. The main advantages of this method are an improved visibility of surgical field and favorable preservation of palatal pedicle. A patient who had been operated by anterior segmental maxillary and mandibular osteotomy without pre operative orthodontic treatment was analyzed for advantages and complications during the intraoperative and early post operative period. There are no specific major complications such as infection, gingival recession and dehiscence. And the patient had a pleasing esthetic facial appearance.

• 대한치과교정학회지
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• 제28권6호
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• pp.975-979
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• 1998

하악 전치부 근첨하 골전단술을 동반한 상악 변형 분절골 절단술 목적은 양치조성 혹은 양악 전돌 환자로부터 가장 좋은 치료 결과를 얻는 것이다. 본 연구에서는 두부방사선 계측 분석과 정면 사진을 비교 분석해 술 후 연조직 변화를 조사하였다. 구순 전돌이 효과적으로 감소되었으며 비순각은 증가하였다. 코가 약간 넓어졌으나 결과는 비교적 양호하였다. 절단된 골분절의 혈액공급은 잘 유지되었다. 이것은 많은 환자에게 적용할 수 있는 비교적 간단한 수술법이다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제34권3호
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• pp.355-364
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• 2008

Skeletal anterior open bite is a difficult problem to correct in orthodontic treatment. To treat adult patients who have skeletal anterior open bite, we considered two methods. Combination treatment of orthodontics & surgery and camouflage orthodontic treatment. In adults, treatment of severe skeletal anterior open bite consists mainly of surgically repositioning the maxilla or the mandible. However, camouflage therapy is often the treatment of choice for skeletal open bite patients who have mild to moderate skeletal discrepancies when growth modification is no longer possible. But excellent results generally require careful coordination of the orthodontic and surgical phases of treatment. This is a case report of a skeletal anterior open bite patients who were treated with orthodontic treatment and orthognathic surgery. First case was diagnosed as skeletal class I malocclusion & bimaxillary protrusion with anterior open bite, and finally treatment ended for removal of open bite with orthodontic procedure and bimaxillary anterior segmental osteotomy surgery. Second case was diagnosed as skeletal class II malocclusion with open bite & mandibular retrusion, and was treated with only camouflage orthodontics because she feared to have a surgery. In a regular follow up visit after debonding we proposed to the patient advanced genioplasty, and in her agreement her facial esthetics was improved through the surgery.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제35권2호
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• pp.124-129
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• 2013

Multiple segment osteotomy orthognathic surgery serves to combine the total or segmental maxillary and mandibular correction of the dentofacial deformities with concurrent procedures to provide immediate repositioning to the dento-osseous elements. In addition, splitting the palate may often be necessary to correct a functionally poor relationship of the maxilla to the mandible or the facial skeleton by realigning the maxillary arch. In this case, the discrepancy in a bimaxillary horizontal relationship and the space between the 2nd premolar and 2nd molar was retained after lengthy preoperative orthodontic treatment. However, we could correct these dento-osseous discrepancies immediately by performing midpalatal expansion, anterior segmental osteotomy and symphyseal osteotomy with bimaxillary osteotomies. If the blood supply to each segment segments was maintained and primary closure of the operation site was feasible, multiple segment osteotomy was considered as a very effective technique for treating dentofacial deformities in vertical, transverse, and sagittal dimensions with differential repositioning of all segments.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제34권4호
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• pp.246-251
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• 2012

Purpose: The purpose of the study is to evaluate the effectiveness of anterior segmental osteotomy (ASO) in bimaxillary protrusion (BP) patients by comparison between the mandibular soft and hard tissue changes from orthodontic treatment and ASO. Methods: All 44 patients were diagnosed with BP in Kyung-Hee Medical Center. Orthodontic treatment with teeth extractions were underwent by 23 patients (Group A) and 21 patients underwent ASO (Group B). Mandibular soft and hard tissue changes were measured and evaluated, which were based on the vertical and horizontal reference line in lateral cephalometric radiographs. Statistical significance between the changes and correlation between each measurement were analyzed. Results: The amount of B point movement was lesser than that of the lower incisal tip (LIT) retraction, and LIT was tilted lingually in group A. The posterior movement discrepancy between LIT and B point was insignificant, and the inclination of lower incisor was not changed in group B. The soft tissues, including the lower lip, showed a posterior movement and reduction in the depth of mento-labial groove. According to the correlation analysis, the movement of the lower incisor was significantly related to the movement of the lower lip in group A, and the movement of the lower incisor was significantly related to that of the movement of lower lip, B point and Pog in group B. Conclusion: The orthodontic treatment in BP patients results in posterior tilting movement of the lower incisor, but ASO results in the bodily movement of the lower incisor. Consequently, ASO is more effective in BP cases because it ensures the controlled movement of the lower incisors.

• Journal of Periodontal and Implant Science
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• 제43권5호
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• pp.243-247
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• 2013

Purpose: The aim of this work is to evaluate a surgical technique for mobilization of mal posed dental implant in anterior area. Methods: A 38-year-old patient consulted our unit for esthetic dissatisfaction with the implant treatment of a central incisor. An implant was observed in 11 and 21, where 11 was 3 mm above the ideal limit, with excessive vestibular angulation. The choice was made to perform a segmental osteotomy and mobilize the bone block and the implant down and forward; a bone block extracted from the mandibular ramus was installed between the implant block and the bed to stabilize the segment. Results: After 4 months, a conventional fixed prosthesis was created and the esthetic result achieved was close to what the patient wanted, with no need for further surgery. The surgical condition was stabilized and maintained for the long-time and no complications how necrosis, infection or bone defects was present. Conclusions: It was concluded that the procedure is efficient, and the biological arguments in favor of the procedure are discussed.