• 대한치과교정학회지
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• 제19권3호
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• pp.137-145
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• 1989

교정력을 가함으로 인한 치은열구 삼출액의 양 및 삼출액 내에 함유된 arylsulfatase와 $\beta$-glucuronidase 활성의 변동을 관찰하기 위하여 Angle씨 1급 부정교합 환자중 상하악 좌우 제1소구치를 발치한 환자 12명을 선정하여 장치의 장착전, 교정력은 가하지 않고 장치만 장착한 상태, 교정력을 가하고 1주후 및 교정력이 감소하여 다움 교정력을 가하기 위해 내원한 시기에 각각 환자의 원심 치은열구에서 삼출액을 채취하였다. 삼출액의 양은 전 기간을 통하여 뚜렷한 변동을 나타내지 않았다. Arylsulfatase의 활성은 치료전에 비하여 교정장치만 장착한 이후부터 유의성 있는 증가를 나타내었으나 교정력을 가한 이후 효소의 활성은 2차시기에 비해 유의한 차이를 나타내지 않았다. $\beta$-glucuronidase의 활성은 교정장치만 장착한 이후에도 증가하였으며, 교정력을 가한 이후에도 2차시기의 활성에 비해 유의한 증가를 나타내었고 교정력이 상실된 4차시기에는 유의성 있는 감소를 나타내었다. 이상의 결과로 볼 때 $\beta$-glucuronidase의 활성은 첫 교정력을 가함에 의한 치조골 및 치주조직 재형성을 잘 반영할 수 있는 좋은 지표로 사료된다.

• 치과방사선
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• 제16권1호
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• pp.69-79
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• 1986

The purpose of this investigation was to know correlation of mean values between centric occlusion and centric relation by the cephalogram in Angle's Class Ⅰ and Ⅲ malocclusion subjects. 22 adults with Angle's Class Ⅰ malocclusion (17 men and 5 women, 21 to 27 years of age) and 14 adults with Angle's Class Ⅲ malocclusion (10 men and 4 women, 21 to 27 years of age) were selected from the dental students in Yonsei University. Each subject was given two lateral cephalometric radiographies and cephalometric analysis was performed. All data from these analyses was recorded and statistically processed with CYBER computer system. 1. The results were obtained as follows: There was a strong positive correlation between centric occlusion and centric relation in all subjects with Angle's Class Ⅰ and Ⅲ malocclusion. 2. In Angle's Class Ⅰ malocclusion, measurements in lower facial height revealed significant difference between centric occlusion and centric relation (P<0.05). In Angle's Class Ⅲmalocclusion, measurements in facial axis angle, mandibular plane angle, convexity of A point, lower incisor protrusion, lower facial height revealed significant difference between centric occlusion and centric relation (P<0.05). 3. When the mandible was moved from centric occlusion to centric relation, the mean distance of mandibular movement was 1.27㎜ (0.2-2.8㎜) in Angle's Class Ⅰ malocclusion, 1.70㎜ (0.55-4.15㎜) in Angle's Class Ⅲ malocclusion, and 1.44㎜ (0.2-4.15㎜) in all subjects.

• 대한치과교정학회지
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• 제23권1호
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• pp.101-113
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• 1993

For the purpose of interpretation of positional changes of craniofacial structures in Class III malocclusion between mixed and permanent dentition, 73 normal samples and 103 Class III samples of mixed dentition and 125 normal samples and 168 Class III samples of permanent dentition were selected. Comparative cephalometric analysis was undertaken between them respectively by mesh diagram method to evaluate the positional changes of maxilla and mandible in anteroposterior direction and vertical direction and also the inclination changes of maxillary and mandibular incisors in labio-lingual direction. The following results were obtained : 1. The antero-posterior positional changes of the maxilla and mandible were posterior direction of maxilla and anterior direction of mandible. 2. The vertical positional changes of the maxilla and mandible were superior direction of both maxilla and mandible. 3. The labio-lingual inclination changes of the maxillary and mandibular incisors were lingual direction of both maxillary and mandibular incisors.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제32권6호
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• pp.559-565
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• 2006

The aim of this study was to evaluate the amount and interrelationship of the soft and hard tissue changes after simultaneous maxillary clockwise rotation and mandibular setback surgery in skeletal class III malocclusion. The sample comprised of 16 adult patients who had anteroposterior skeletal discrepancy. These patients had received presurgical orthodontic treatment and surgical treatment which consisted of Le fort I Osteotomy and bilateral saggital split ramus osteotomy. The presurgical (T1) and postsurgical (T2) lateral cephalograms were evaluated. The computerized statistical analysis was carried out with SPSS/PC program. The results demonstrated a decrease in the vertical dimension in the soft and hard tissue. The nasolabial angle was increased and the mentolabial angle was decreased. The results showed also many statistically significant correlations(p<0.05). The lower lip closely followed the skeletal movement of the B- point in the horizontal plane. The double jaw rotation surgery can afford a good solution to solve the problems of class III malocclusion cases.

• Journal of Yeungnam Medical Science
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• 제6권2호
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• pp.183-194
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• 1989

저자들은 2명의 하악 전돌증 환자에게 수술전 치열교정후 구내 하악지 경사 분열 골절단술을 시행하고 술후 치열교정을 계속 시행중이며 이 술식으로 다음과 같은 결과를 얻었다. 1. 전돌된 하악골의 후방이동으로 환자의 안모 추형과 심리적 열등감을 해소했으며 교합관계는 Angle 1급으로 회복하였으며 전반적인 부정교합을 치열교정과 더불어 해소했다. 2. 술후 감염과 골편 파절, 안면 지각이상, 측두하악 장애는 나타나지 않았으며 48시간 지난후 안면부 종창은 서서히 해소되었다. 3. 수술후 약간 고정은 8주간 시행했으며 악간 고정 제거 1주후 정상적인 개구가 가능했다. 4. 경조직의 후방이동에 따른 연조직의 하순과 하악 이부에서의 이동량은 본 증례에서는 거의 1:1로 나타났다. 5. 악간 고정 기관과 술후 치열고정 기간중의 회귀현상은 약간 관찰되었으나 이에 대하여는 더 오랜 기간의 연구 관찰이 필요하고 관찰중이다.

• 대한치과교정학회지
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• 제24권3호
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• pp.695-707
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• 1994

This study investigates the effects of third molar on the occlusal plane in Angle's class El malocclusion with possibilities of posterior crowding and the interrelationships of occlusal plane inclinations to other skeletal patterns. Above investigations might showed that considerations should be given to third molars with possibilities of posterior crowding in establishing diagnosis and treatment plans for Angle's class III malocclusion patients. The following conclusions were obtained 1. In events of third molars causing possible posterior crowding, maxillary third molars showed more mesial inclinations than second molars, and compared to those with third molar missing cases, first molars were more mesially inclined and displaced more inferiorly from the palatal plane and OP-MP was increase , thus the occlusal plane was less steep. 2. In events of third molars causing possible posterior crowding, the anglulation between AB line and mandibular plane was decreased and ANB showed negative values. Thus chin points were more protruded, ramus were more anteriorly displaced, and increase in lower facial height, genial angle, effective mandibular length and mandibular plane angle were observed. This in all caused more vertical opening and more severe skeletal disturbance. 3. OP-MP was increased as the maxillary first molars were more inferiorly displaced from the palatal plane. As this angle was increased mandibular planes were more inferiorly inclined and LFH, genial angle, effective mandibular length were more increased and mandibular ramus was more anteriorly placed. 4. As the maxillary first molars were more inferiorly placed from the palatal plane, more increased OP-MP/PP-MP ratio made the occlusal plane less steep. As OP-MP/PP-MP was increased, mandibular ramus was more anteriorly placed and made longer, and facial angle and effective mandibular length were increased.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제34권4호
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• pp.252-259
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• 2012

Purpose: This study evaluated the postoperative stability of counter clockwise rotation of the mandibular plane in anterior openbite patients, who have had one jaw surgery performed. Methods: This study includes patients with skeletal class III malocclusion accompanied by anterior openbite among the patients who have had BSSRO performed, resulting in counter clockwise rotation of the mandibule. We excluded the patients with genioplasty and segmental surgery, and included 23 patients who underwent BSSRO. Results: We found no statistical significance between the amount of counter clockwise rotation in the mandible in the Pearson correlation test. Also, there was no significant difference between Group 1 (< $3^{\circ}$) and Group 2 (> $3^{\circ}$). Conclusion: This study evaluated the amount of horizontal relapse, and the degree of relapse. Stable results were obtained. Although there was no statistical significance between the degree of openbite and the amount of horizontal relapse, the group with a greater amount of openbite had a greater amount of relapse.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제33권4호
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• pp.319-322
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• 2011

Purpose: The purpose of this study was to examine the appropriate degree of set-back of the mandible by evaluating the rate of relapse after surgery. Methods: Among the patients who visited our hospital from January 2002 to January 2007 and who underwent orthognathic surgery, of the patients available for follow-up observation, the rate of relapse after surgery was investigated according to the set-back degree. The patients were divided into groups by the degree of set-back, and relapse was evaluated by the radiographs performed the day after surgery, 6 months after surgery, 1 year after surgery, 2 years after surgery and 3 years after surgery. Results: In cases that exceeded the limit of posterior movement of the mandible (13 mm) or that had the wrong position of the condyle, a greater tendency toward relapse was shown. Conclusion: Based on the results of this study, among the cases that required a large amount of posterior movement of the mandible, two jaw surgeries accompanied by bilateral sagittal split ramus osteotomy (BSSRO) and LeFort I osteotomy are recommended.

• 대한치과교정학회지
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• 제40권3호
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• pp.195-206
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• 2010

본 증례보고에서는 골격성 II급 관계를 보이는 16세 여자 환자에서 zygomatic-anchorage plates (Zygoma-gear Appliance, ZGA)를 이용하여 상악 구치를 후방 이동시킴 구내 장치를 소개하고자 한다. 이 장치는 양측성 zygomatic anchorage plates, inner-bow와 강한 힘을 내는 구강 내 고무줄로 구성되어 있다. 3개월 내에 상악 구치의 후방 이동이 이루어 졌으며, 측모 두부 방사선 사진 분석 결과, 상악 구치는 4mm 후방 이동, $4.5^{\circ}$ 후방 경사되었다. 본 연구 결과 ZGA 장치를 이용해 고정원 소실 없이 단기간에 상악 구치의 후방 이동이 효과적으로 이루어졌음이 확인되었으며, 이를 통해 구치의 후방 견인이 요하는 증례에서 구외 장치 대신 사용될 수 있을 것으로 판단된다.

• 대한소아치과학회지
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• 제45권1호
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• pp.115-122
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• 2018

누난 증후군은 특이한 얼굴 모습, 작은 키, 선천적 심장질환을 보이는 유전 질환으로 성별에 관계없이 신생아 1000 - 2500명 당 1명의 유병률을 보인다. 누난 증후군으로 진단된 11세 소년이 상악 우측 견치의 위치이상을 주소로 내원하였다. 그는 선천적 폐동맥 협착증을 진단받았으며, 성장발달 지연을 보였다. 지혈에는 문제가 없었으며, 얼굴은 누난 증후군의 특징적 모습을 보였다. 구강검사 시 치성 2급 부정교합, 전방돌출 된 전치, 얕은 피개교합을 보였다. 방사선학적 검사상 상악 우측 견치의 위치이상 및 맹출 경로의 이상으로 상악 우측 측절치의 치근 흡수가 관찰되었다. 측모두부 방사선사진상 상하악의 골격적 패턴은 정상범주에 있었다. 가철성 교정장치를 이용하여 매복치를 견인했다. 본 증례의 누난 증후군 증상 및 구강 내 이상 소견은 심하지 않으나 유병률에 비해 많이 다루어지지 않아 본 증례발표를 통해 누난 증후군 환자의 구강 내 특징 및 치과적 관리 방법에 대해 언급하고자 하였다.