• Maxillofacial Plastic and Reconstructive Surgery
• /
• 제18권1호
• /
• pp.120-124
• /
• 1996

The postoperative maxillary cyst develops as a delayed complication after surgical intervention or Caldwell-Luc operation in the maxillary sinus and was also reported that it could occur after Le Fort I osteotomy. This is also called as surgical cliated cyst because of its lining epithelium is usually lined by a pseudo-stratfied ciliated columnar epithelium. This report represents a case of postoperative maxillary cyst which developed within the anterior of maxilla and in association with nasal mucosa 6 years after a Le Fort I osteotomy. In 1989, 26-year-old male complained of his mandibular prognathism and underwent orthogmathic surgery, Le Fort I osteotomy, bilateral sagittal split ramus osteotomy, partial glossectomy.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제41권2호
• /
• pp.97-101
• /
• 2015

Maxillary transverse deficiency is one of the most common deformities among occlusal discrepancies. Typical surgical methods are segmental Le Fort I osteotomy and surgically-assisted rapid maxillary expansion (SARME). This patient underwent a parasagittal split with a Le Fort I osteotomy to correct transverse maxillary deficiency. During follow-up, early transverse relapse occurred and rapid maxillary expansion (RME) application with removal of the fixative plate on the constricted side was able to regain the dimension again. RME application may be appropriate salvage therapy for such a case.

• Maxillofacial Plastic and Reconstructive Surgery
• /
• 제36권1호
• /
• pp.21-24
• /
• 2014

Maxillary sinus infection following Le Fort I osteotomy is rare in patients without a history of preexisting nasal symptoms. A case of a 19-year-old male patient who suffered from preoperative chronic non-allergic rhinitis and developed repetitive postoperative maxillary sinus infection after Le Fort I osteotomy is reported.

• 대한치과교정학회지
• /
• 제48권1호
• /
• pp.63-70
• /
• 2018

Objective: The aim of this study is to quantitatively evaluate the stability of the skeletal and dental widths using cone-beam computed tomography (CBCT) after segmental Le Fort I osteotomy in adult patients with skeletal Class III malocclusion requiring maxillary expansion. Methods: In total, 25 and 36 patients with skeletal Class III malocclusion underwent Le Fort I osteotomy (control group) and segmental Le Fort I osteotomy (experimental group), respectively. Coronal CBCT images were used to measure the dental and skeletal widths before (T1) and after (T2) surgery and at the end of treatment (T3). The correlation between the extent of surgery and the amount of relapse in the experimental group was also determined. Results: In the control group, the dental width exhibited a significant decrease of $0.70{\pm}1.28mm$ between T3 and T2. In the experimental group, dental and skeletal expansion of $1.83{\pm}1.66$ and $2.55{\pm}1.94mm$, respectively, was observed between T2 and T1. The mean changes in the dental and skeletal widths between T3 and T2 were $-1.41{\pm}1.98$ and $-0.67{\pm}0.72mm$, respectively. There was a weak correlation between the amount of skeletal expansion during segmental Le Fort I osteotomy and the amount of postoperative skeletal relapse in the experimental group. Conclusions: Maxillary expansion via segmental Le Fort I osteotomy showed good stability, with a skeletal relapse rate of 26.3% over approximately 12 months. Our results suggest that a greater amount of expansion requires greater efforts for the prevention of relapse.

• 대한치과의사협회지
• /
• 제44권2호통권441호
• /
• pp.133-138
• /
• 2006

This is a report of one case about facial asymmetry involving maxilla & mandible. Le Fort I Maxillary Osteotomy & BSSRO is usually used for facial asymmetry patient involving maxilla & mandible. But Le Fort I Maxillary Osteotomy has demerits about more aggressive technique, more operation times, more discomforts of post operation nasal breathing than Unilateral maxillary Segmental Osteotomy. So we treated one patient successfully using Unilateral Maxillary Segmental Osteotomy, BSSRO & Post - Operation Rapid Orthodontics instead of Le Fort I Maxillary Osteotomy.

• Maxillofacial Plastic and Reconstructive Surgery
• /
• 제31권6호
• /
• pp.485-491
• /
• 2009

Postoperative skeletal stability was evaluated in combination of Le Fort I and U-shaped osteotomies for superior repositioning of maxilla in bi-maxillary surgeries in 30 consecutive patients. The fifteen patients underwent Le Fort I osteotomy alone and the other fifteen patients underwent Le Fort I and U-shaped osteotomies. In all patients, the maxilla was first osteomized and fixed with absorbable plates system. A bilateral sagittal split ramus osteotomy (BSSRO) of the mandible was then carried out and fixation was performed using absorbable plates. Maxillo-mandibular fixation with rubber ring was used for two weeks post-operatively in all patients. Lateral cephalograms were obtained pre-operatively, 1 day post-operatively, 6 months after surgery. The changes in anterior nasal spine (ANS), point A, upper incisior (U1), and point of maxillary tuberosity (PMT) were examined. The maxillas in the fifteen patients of both examination group were repositioned nearly in their planned positions during surgery and no significant post-operative changes in the examined points of the maxilla were found. These results suggest that a combination of a Le Fort I and U-shaped osteotomy is a useful technique for reliable superior repositioning of the maxilla. The post-operative change in the maxilla using this combination osteotomy was comparatively stable.

• 대한치과의사협회지
• /
• 제17권12호통권127호
• /
• pp.923-926
• /
• 1979

In patient of long standing malunited maxillary fracture, maxillary osteotomy or refracture seems to be justifiable. This is a case of the patient, a 60 year old Korean female patient, presented a long-standing malunited maxillary fracture with dish-type face and functional disturbance in mouth opening. We performed upon her Le Fort I osteotomy only via labial-buccal horizontal incisions in one-stag operation. The result was good in esthetics and function.

• 대한치과교정학회지
• /
• 제40권6호
• /
• pp.383-397
• /
• 2010

본 연구는 상순돌출을 동반한 골격성 III급 부정교합에서 전방분절골절단술(anterior segmental osteotomy, ASO)을 병용한 상행지시상분할골절단술(bilateral sagittal split ramus osteotomy, BSSRO)과 Le Fort I 골절 단술을 병용한 상행지시상분할골절단술(BSSRO) 후 상악의 경 연조직 변화 및 경조직 변화에 대한 연조직 변화율을 비교하였다. A군은 ASO/BSSRO를 시행한 군 14명, B군은 Le Fort I/BSSRO를 시행한 환자 중 상악의 후방부가 상방으로 이동(posterior impaction)된 15명으로 구성되었다. 수술 전 2개월 이내와 수술 후 6개월 이후에 촬영한 측모두부방사선사진을 분석하여 다음과 같은 결과를 얻었다. 두 군 모두 수술 후 상악 전방부 경조직과 연조직이 후방이동되었고, A군에서 더 큰 변화량을 보였다. A point의 후방이동에 따른 superior labial sulcus의 변화율은 A군에서 79%, B군에서 15%를 보였고, supradentale에 대해 labrale superious는 A군에서 80%, B군에서 68%의 비율로 후방이동하였다. 교합평면각은 B군에서 증가한 반면, A군에서는 통계적으로 유의성 있는 변화가 없었다. 이상의 연구결과 골격성 III급 부정교합의 양악수술 시 상악 수술은 상악 전방부와 상순의 돌출이 심한 경우에는 ASO를 시행하고 교합평면각의 증가가 필요한 경우에는 posterior impaction을 동반한 Le Fort I 골절단술을 시행하는 것이 바람직하다.

• 대한치과의사협회지
• /
• 제53권7호
• /
• pp.468-475
• /
• 2015

Cleft 상악수술은 근본적으로 재발 성향을 가지며 Lefort I 후에 대부분 횡적으로 완전하게 안정되어 있지않고 움직임이 존재하므로 악간 고정기간을 통상적인 수술에서보다도 좀 더 충분히 두는 것이 좋다. 수술과 동시에, 추가적으로 비대칭적인 piriform aperture 나 alar base를 correction하기 위하여 골이식이 고려될 수 있으며 경우에 따라서는 조심스럽게 반흔조직을 절개해 주어야 하는 경우도 있다. Cleft 환자의 경우 상순이 얇고 수술에 의한 전방이동효과가 적기때문에 상악 수술시 이를 적극 고려하는 것이 필요하다. 또한 cleft 환자의 pterygomaxilla 부위의 해부학적 구조가 일반인과 차이가 있다는 것을 숙지하여 상악 수술에 임하는 것이 필요하다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제33권5호
• /
• pp.499-503
• /
• 2007

Introduction: In orthognathic surgery, internal fixation has been usually done with titanium plates and screws. Recently, Biodegradable plates and screws have been frequently used but the reports of long term results of postoperative stability are rare, especially after maxillary reposition in orthognathic surgery. Objective: In order to clarify the clinical utility of self-reinforced bioresorbable poly-70L/30DL-Lactide miniplates & screws in maxillary fixation after LeFort I osteotomy, this study examined the postsurgical changes in maxilla and complications of biodegradable plates and screws. Study design: Nineteen patients who had undergone maxillary internal fixation using biodegradable plates and screws were evaluated radiographically and clinically. A comparison study of the changes in maxilla position after surgery in all 19 patients was performed with 1-week, 1-month, 3-months, 6-months and/or 1-year postoperative lateral cephalograms by tracing. Complication of the biodegradable plates and screws was evaluated by follow-up roentgenograms and clinical observation. And one-way ANOVA test was used for statistical analysis. Results: The position of the maxillary bone was stable after surgery and was not changed significantly from 1 week to 1 year after operation. And we could not find any complication of biodegradable plates and screws. Conclusions: Internal fixation of the maxilla after LeFort I osteotomy using self-reinforced biodegradable plates and screws is a reliable method for maintaining postoperative position of the maxilla after LeFort I osteotomy.