• 대한치과교정학회지
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• 제49권1호
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• pp.59-69
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• 2019

In this report, we describe a case involving a 34-year-old woman who showed good treatment outcomes with long-term stability after multidisciplinary treatment for unilateral cleft lip and palate (CLP), maxillary hypoplasia, severe maxillary arch constriction, severe occlusal collapse, and gingival recession. A comprehensive treatment approach was developed with maximum consideration of strong scar constriction and gingival recession; it included minimum maxillary arch expansion, maxillary advancement by distraction osteogenesis using an internal distraction device, and mandibular setback using sagittal split ramus osteotomy. Her post-treatment records demonstrated a balanced facial profile and occlusion with improved facial symmetry. The patient's profile was dramatically improved, with reduced upper lip retrusion and lower lip protrusion as a result of the maxillary advancement and mandibular setback, respectively. Although gingival recession showed a slight increase, tooth mobility was within the normal physiological range. No tooth hyperesthesia was observed after treatment. There was negligible osseous relapse, and the occlusion remained stable after 5 years of post-treatment retention. Our findings suggest that such multidisciplinary approaches for the treatment of CLP with gingival recession and occlusal collapse help in improving occlusion and facial esthetics without the need for prostheses such as dental implants or bridges; in addition, the results show long-term post-treatment stability.

• 대한치과의사협회지
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• 제48권5호
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• pp.391-406
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• 2010

Orthodontic treatment for middle-aged patients has become more commonplace with various reasons including improved socioeconomic status. Understanding of oral status and treatment modalities of middle-aged patients is mandatory for accurate diagnosis and proper treatment planning. This study investigated 100 consecutive patients aged 40s and 50s and 100 aged 20s who had been examined and diagnosed at the Department of Orthodontics, Chonnam National University Dental Hospital. The results were obtained as follows; 1. Gender distribution showed female outnumbered male patients in young-aged adult patients, but middle-aged patients showed similar male and female distribution. 2. The major concern seeking orthodontic treatment was esthetics not only in young-aged but also in middle-aged adult patients, and a number of middle-aged patients were concerned about oral health as well. 3. Considerable number of middle-aged patients were referred by other dental specialties while young-aged adult patients were more self-motivated for orthodontic treatment. 4. Middle-aged adult patients had more missing teeth and periodontal disease than young-aged adults. 5. The most frequently-observed problem was dental spacing in middle-aged patients while dental crowding in young-aged adult patients. Middle-aged patients showed higher prevalence of deep overbite and overjet while most of young-aged adults presented opposite direction of problem in overbite and overjet. 6. Limited orthodontic treatment was required rather than comprehensive treatment in middle-aged patients, and the most common tooth moving area was anterior part of dentition in case of limited treatment. Need of interdisciplinary therapy with other dental specialties was more common in middle-aged patients. 7. Intervention of specific technique such as invisible TP, passive bracketing, passive wire bonding, and lingual orthodontics was more required in middle-aged patients. Considering that middle-aged patients have different characteristics than young-aged adults, the results of the present study suggest that different treatment modalities are required in middle-aged orthodontic patients in order to manage them properly and efficiently.

• 대한치과의사협회지
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• 제54권6호
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• pp.404-413
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• 2016

보철 수복용 임플란트는 소실된 구강조직을 회복하는데 매우 예측 가능한 치료방법으로 특히 교정치료를 위한 고정원으로 사용되었을 때 원하지 않는 고정원의 위치변화 없이 원하는 치아의 움직임만을 얻을 수 있는 효과적인 치료 방법 중 하나이다. 특히 수복해야 할 무치악 부위가 존재하는 경우 장래 보철적 지대치로 이용될 임플란트를 교정치료 전에 미리 식립하여 교정적 고정원으로 사용한다면 고정용 나사 식립을 위한 추가적인 비용이 없고, 교정력에 의한 고정용 나사의 탈락과 같은 부작용 없이 효과적인 고정원으로써 사용될 수 있을 것이다. 교정력은 골유착된 임플란트에 골소실을 야기하지 않으며 임플란트의 종류와 수술 방법, 치유 기간은 일반적인 치료과정 을 따르면 된다. 다만 한번 골유착된 임플란트는 위치를 변화시킬 수 없으므로 치료를 시작하기 전에 임플란트 식립 시기 및 식립 위치에 대한 정확한 진단이 반드시 선행되어야 할 것이다.

• 대한치과교정학회지
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• 제10권1호
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• pp.95-103
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• 1980

The present paper describes 3 clinical cases in which the orthodontic treatment was effected by the Bioprogressive therapy following the extraction of the upper and lower first premolars. What is most noteworthy in the present treatment is the use of a systems approach to diagnosis and treatment by the application of the visual treatment objective in planning treatment, evaluating anchorage and monitoring results, and the rest being performed routinely by the Bioprogressive mechanism. The result achieved by this method is very favorable and the efficiency of the Bioprogressive therapy is quite satisfactory.

• 대한치과교정학회지
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• 제53권2호
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• pp.116-124
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• 2023

Objective: The absence of a guideline to refer to developing malocclusions appropriately, may be a contributing factor to the inadequacy of timely interceptive orthodontics provision. This study aimed to develop and validate a new orthodontic grading and referral index to be used by dental frontliners to prioritize the orthodontic referral of developing malocclusion in children based on its severity. Methods: A cross-sectional study involving clinical assessment with 413 schoolchildren aged between 8.1 and 11.9 years was conducted in 2018. All the presenting malocclusion was listed and graded based on a few dental guidelines to produce the draft index. The validity and reliability of the draft index were tested using twenty study models. Face and content validation was carried out using the content validation index and Modified Kappa Statistics. Results: Fourteen dental and occlusal anomalies were identified as components of malocclusion and three grades of referral (monitor, standard, urgent) were included in the final index. The scale-level content validity index average value of 0.86 and 0.87 was obtained for content and face validation, respectively. There was moderate to excellent agreement in the Modified Kappa Statistics for both validations. Excellent inter- and intra-assessor agreement was obtained. The new index displayed valid and reliable scores. Conclusions: The Index for Interceptive Orthodontics Referral was developed and validated for the dental frontliners to identify and prioritize the developing malocclusion in children based on its severity and refer for orthodontic consultation to increase the possibility for interceptive orthodontics.

• 대한치과보철학회지
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• 제53권1호
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• pp.26-38
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• 2015

과도한 수평 및 수직피개를 가진 과개교합 환자에서 치질의 파괴 및 대합치 정출의 문제를 흔히 관찰할 수 있다. 이는 곧 교합평면의 붕괴와 부적절한 전방유도로 이어지며, 조화로운 교합관계의 회복이 이루어지지 않으면 다수의 치아 상실과 저작기능의 감소를 야기하게 된다. 과개교합환자의 문제를 해결하려면 교정과, 구강외과 및 보철과의 협진이 이루어져야 한다. 본 증례보고는 심한 과개교합을 가진 환자에서 수직교합고경을 증가시킨 후 완전구강회복을 이룬 증례를 보고하고자 한다. 치료는 구외 및 구내검사, 진단 및 치료계획, 진단 납형형성, 분절골 절단술, 교정적 함입 및 보철치료 순으로 진행되었다. 수직고경증가를 동반한 완전구강회복술로 환자의 심미적, 기능적 문제를 해결할 수 있었다.

• 대한치과의사협회지
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• 제52권1호
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• pp.17-26
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• 2014

Computerized 3D virtual dental models are currently available, and their use has started to improve treatment outcomes. The accuracy of digital models has been demonstrated by many studies and various intra-oral scanners are innovated for short scanning time and high precision. Recently, a digital model was combined with a high technology computer-driven system, which was developed for the application of a digital set-up and indirect bonding of lingual attachments. In this section, virtual treatment planning using a virtual set-up program is be introduced, and the clinical applications and accuracy of computer-generated indirect bonding are discussed.

• 대한치과교정학회지
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• 제31권4호
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• pp.415-424
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• 2001

교정치료에 있어서 anchorage는 진단 및 치료계획에서부터 치료 종료 단계까지 교정의사가 항상 염두에 두면서 치료를 진행 해야 하는 중요한 요소이다. 환자의 적극적인 협조를 필요로 하는 전통적인 anchorage 조절법 보다는 miniscrew 같은 skeletal anchorage 가 좀더 효과적인 방법으로 제시되어 지고 있어, miniscrew의 교정적 이용 시 고려사항에 대하여 전반적인 고찰과 증례보고를 통해서 niniscrew의 다양한 임상적 적용에 대해서 살펴보았다. 또한 midpalate부위가 miniscrew의 식립 부위로서 가지는 장점과 식립 시의 주의사항을 알아보았으며 skeletal anchorage 가 교정에 도입되면서 치료개념과 방법에 있어서의 변화를 요약하면 다음과 같다. 1. 절대적인 개념의 Anchorage가 도입 되었다. 2. 생역학적 면에서 치아의 치체이동이 쉬워지고 determinate system이 설계되어 질수 있다. 3. 기존의 수술로만 가능했던 치료들 중 일부는 교정 치료만으로 치료가 가능하게 되었다.

• 대한치과교정학회지
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• 제13권2호
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• pp.193-199
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• 1983

The purpose of orthodontic treatment is to produce functional occlusion and to create or maintain facial esthetic harmony. The soft-tissue covering of the face also plays an important role in facial esthetics, speech and other physiologic functions. The study of the soft-tissue profile is important for the planning of orthodontic treatment. The author studied cephalometric X-ray films on 49 patients (23boys, 26 girls) with Angle's class II division 1 malocclusion, ranged from 9 to 13 years of age. Roentgenocephalmetric X-ray films were taken pre and post orthodontic care. Tracings were made in usual manner. The obtained results were as follow. 1. There was no significant sexual difference on mean changes. 2. In the comparison of the soft-tissue thickness changes, Ls-Ls' and Si-Si' in male subjects were remarkable. 9. There were significant correlations between osseous (Ss') change and soft-tissue (Ss) chang, of maxilla in male and female subjects subsequent to orthodontic treatment. 4. The ratios between the protraction of the Ss' and that of the Ss were 1:1.5 in all sexes, the ratios between the Si' and that of the Si were 1:1.4 in male and 1:1.2 in female. 5. There were significant correlations between maxillary central incise. angulation change $({\angle}A)$ and upper lip inclination change $({\angle}B)$ in all sexes. 6. There were little correlations between change in distance difference of Is and Ii and change in distance difference of Ls and Li in all sexes in all sexes.

• 대한치과교정학회지
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• 제18권1호
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• pp.127-139
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• 1988

Esthetic is one of the prime goal of the orthodontic treatment. It is represented by the word of harmony or balance. There is no absolute esthetic norm but it is important to study about it in orthodontic and orthognatic surgical treatment planning. The purpose of this study is to obtain the norm of Korean female adolescents who were candidates of 1986, 1987 Miss Korea Beauty Contest. The 77 individual samples were selected and studied by cephalometric analysis. Obtained results were as follows: 1 Korean esthetic norm was obtained. 2. Simple correlation coefficient was obtained between each measurements. 3. Holdaway ratio of Korean beauty was 3.3 : 1. 4. To compare with caucasian, profile of Korean beauty had less prominant nose, more prominant lip and deeper sulcus depth.