• Journal of the korean academy of Pediatric Dentistry
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• v.32 no.2
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• pp.278-283
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• 2005

Impaction of mandibular canine is not common, and transmigration of mandibular canine is rare. Treatment of impacted canine can be removal of physical obstacle and periodic observation, surgical exposure of impacted tooth and orthodontic traction, autotransplantation, surgical extraction. Management of impacted canine depends on existence of physical obstacle, position and direction of impacted tooth, space available for canine eruption, stage of root development. Of the two case in this report, one case involved impaction of lower canine with odontoma and dentigerous cyst that is treated by surgical exposure and orthodontic traction. The other case involved transmigration of lower canine with supernumerary teeth. It was thought difficult to treat only by orthodontic treatment, so the impacted canine was transplanted to its normal position and orthodontic treatment was conducted.

• The Journal of Korean Association of Computer Education
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• v.12 no.3
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• pp.63-74
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• 2009

The purpose of this study was to design and develop the simulator for practicing pre-service teachers' classroom discipline skills to control and prevent misbehaviors of students. In order to accomplish this purpose, the followings were researched. First, the examination of related literature and previous studies was performed to find out whether teaching simulation can be significant for pre-service teacher' teaching experience. Second, self-esteem, self-confidence, and self-control were selected as key variables of students' misbehaviors from the examination of literature and previous studies. Third, students' misbehaviors were designed and their information in the student records was developed based on the variables. Forth, teacher's treats were developed and classified with verbal and nonverbal treats. Lastly, simulated students' misbehaviors were designed to be aggravated or prevented according to the teachers' treats. Further research for a teaching simulation was projected based on the pre-service teachers' evaluation.

• The Journal of the Korean dental association
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• v.21 no.4 s.167
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• pp.293-297
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• 1983

Bruxism이란, 일반적으로 기능이외의 목적으로 상하악 치아를 악물거나 갈음질 하는 것이라고 정의된다. 동일한 상태를 서술하는 용어로 neuralgia traumatica, Karolyi effect, occlusal habit neurosis, parafunction 등이 있으며, 수면중의 이갈음질을 bruxism, 주간의 습관성 이갈음질을 bruxomania로 구분하기로 한다. 또한 centric bruxism과 eccentric bruxism으로 분류하기도 한다. eccentric bruxism은 통상적 의미의 수면중의 bruxism이며, 하악의 측방운동중의 이갈음질이고 뽀드득하는 갈음질 소리를 냄, 저작근육의 긴장도가 증가되어 있으면서 등장성수축을 나타내고, 비중심위의(eccentric) 교합간섭이 주요 유발인자인 반면에 centric bruxism은 중심교합위에서 상하악 치아를 간헐적으로 악무는 것(clenching)은 의미하고 - 지속적으로 악무고 있는 것은 clamping이라고 함.- 주로 주간에 행하며 갈음질소리를 들을 수 없고, 역시 저자근육의 긴장도가 증가되어 있으며 등률성수축을 나타내고, 중심교합위에 근접하여 존재하는 교두간섭이 유발인자이다. bruxism이나 clenching과 부정교합의 관계는 bruxism과 clenching은 부정교합을 야기할 수 있고, 부정교합도 역시 bruxism과 clenching을 유발시키는 작용을 할 수 있는 악순환적 관계이다. 현저한 부정교합을 가지고 있는 bruxism환자의 교정치료는 그 목적이 bruxism의 치료라기보다는 오히려 부정교합의 치료이며 부차적으로 bruxism의 치료를 기대하게 된다. 그러나 bruxism이 장기간 지속되어 치아 및 그 주위조직, 악관절과 신경근계에 심한 손상을 주었을때의 교정치료는 일반적으로 제한을 받을 뿐만아니라 bruxism의 처치에는 거의 무의미한 치료가 될 수 있다. 따라서 거자는 bruxism 환자의 교정치료라는 제목의 원고 청탁을 받았으나 편집위원의 양해아래 장치를 이용한 bruxism의 치료에 관하여 서술하려 한다.

• Journal of Dental Rehabilitation and Applied Science
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• v.37 no.4
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• pp.274-280
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• 2021

Intentional replantation has been used for alternative treatment for conventional root canal therapy. This case report describes that the intentional replantation with application of extrusive orhodontic force for 6 weeks, on which tooth of previous root canal therapy. As preapplicatory orthodontic force, tooth moblity was increased so that extraction of the designated tooth was more easily accomplished and augmented volume of periodontal ligament is expected to acceleated gingival reattachment.

• Journal of the korean academy of Pediatric Dentistry
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• v.29 no.1
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• pp.44-50
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• 2002

Apert syndrome is a kind of congenital-acrocephalosyndactyly syndrome which was first reported by Apert in 1906 and characterized by its acrocephaly and syndactyly. Clinical characteristic features are cone-shaped skull morphology due to early fusion of coronal suture, fusion of fingers of hands and toes of feet. It is an autosomal dominant-heritable syndrome. Due to hypo-development of midface region, Apert syndrome patients have a tendency to have ocular proptosis, hypertelorism, maxillary deficiency. High palate and soft palate cleft are common findings in these patients. In general, mandibular growth pattern is normal, but relative maxillary deficiency exaggerates mandibular forward position, so relative mandibular prognathism is inevitable. Narrow maxillary and mandibular dental arch worsen teeth alignment and crowding. Skeletal malocclusion and open bite are also common. This is a case report of a Korean 3 year 1 month male Apert syndrome child referred by department of plastic surgeon for the possibility of orthodontic treatment. General features of Apert syndrome, patient's medical history, radiographic evaluation, clinical examination, orthodontic and surgical treatment planning are discussed in this report.

• Journal of the korean academy of Pediatric Dentistry
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• v.37 no.1
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• pp.109-116
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• 2010

Impaction is defined as a cessation of the eruption of a tooth caused by a clinically or radiographically detectable physical barrier in the eruption path or by an ectopic position of the tooth. The reasons for impaction of the maxillary central incisor are supernumerary tooth, odontoma, ectopic position of tooth germ, dilacerated tooth and so force. Impacted tooth cause space loss due to proximal movement of adjacent tooth, malocclusion, root resorption of adjacent tooth, cyst formation, so careful observation and early detection is important and exact treatment should be applied to prevent these results. The treatment options of impacted tooth include induction an eruption through extraction of deciduous tooth or surgical exposure, reposition of impacted tooth by surgical method or orthodontic treatment. Orthodontic traction is recommended when an eruption does not happen after removal of barrier or surgical exposure, when eruption path is too transpositioned to be corrected spontaneously so eruption does not expected. In these cases, traction of impacted maxillary central incisor was carried out using orthodontic method with closed eruption technique and it showed good clinical results so we report these cases.

• The Journal of the Korean dental association
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• v.23 no.11 s.198
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• pp.965-978
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• 1985

• Journal of the korean academy of Pediatric Dentistry
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• v.32 no.1
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• pp.26-32
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• 2005

A tooth impaction means a state that a tooth does not erupt out of oral mucosa or alveolar bone for many reasons. The reasons for an impaction of the Maxillary central incisor are an odontoma, supernumerary tooth, space loss, prolonged remaining or early loss of a preceding deciduous tooth, abnormalities of crown or root caused by trauma of a deciduous tooth and an ectopic position of a tooth germ. In the case of the impacted maxillary incisor, a rapid mesial movement of a lateral incisor leads a space loss and a midline deviation can be happened. Furthermore, it can cause a cyst. When we treated a patient with an impacted central incisor early, we could see a better prognosis. It means an early diagnosis and an exact treatment are very important. Generally if the impaction is not severe or it is caused by a keratinized covering tissue, a surgical exposure can induce an eruption easily but an orthodontic force is recommended when an eruption does not happen after a surgical method, when the eruption path is too transpositioned to be corrected spontaneously and when an impacted tooth is located so deeply. In the treatment using an orthodontic force, careful considerations about a root length, pulp, and a periodontal tissue can improve the periodontal and esthetic prognosis for the long follow-up results. This case is using an orthodontic traction following a periodic observation and in no expectation of spontaneous eruption. After treatment of this case, I have got some knowledges, so I report this case.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.9
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• pp.347-355
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• 2017

The purpose of this study was to investigate the effects of pelvic adjustment on low back pain and spino-pelvic parameters in middle-aged women. Thirty-eight middle-aged women with chronic low back pain were randomly assigned to the pelvic adjustment (n = 20) oruntreated control (n = 18) group. Pelvic adjustment interventionswereperformed four times a week for 8 weeksin the former group. At baseline and after 8 weeks, the back pain and back function were evaluated using the visual analogue scale (VAS), Oswestry disability index (ODI), and back flexibility. Additionally, the spino-pelvic radiographic parameters and serum C-reactive protein (CRP) levels were assessed. After 8 weeks, the VAS, ODI, and back flexibility significantly improved in the pelvic adjustment group compared with the control group. It was found that the changes from baseline in the lumbar lordotic angle, sacral slope, pelvic crest unleveling, and femoral head height inequality were significantly greater in the pelvic adjustment group than in the control group. There were no significant changes in the pelvic incidence or serum CRP levels in either group. In conclusion, pelvic adjustment has beneficial effects on chronic low back pain and back function, suggesting that the effects of pelvic adjustment on back pain may at least in part result from changes in the spino-pelvic alignment.

• The korean journal of orthodontics
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• v.25 no.1 s.48
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• pp.101-110
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• 1995

The purpose of this study was to observe the tissue response to the orthodontic force applied immediately after buccal horizontal subapical osteotomy of maxilla. Five mongrel cats weighing about 2.5 Kg were used for this experiment. The left upper canine and premolar of each cat served as a experimental side and the right ones as a control side. On the experimental side, a 100gm orthodontic force was applied between the upper canine and premolar immediately after the osteotomy. On the control side, the same orthodontic force was applied without the osteotomy. After 7days, the experimental animals were sacrificed. The results were as follows: 1. In the pressure zones of the experimental group, significant increase of osteoclasts and direct resolution along the alveolar bone surface was observed as compared with those of the control group. 2. In the pressure 2ones of the experimental group, a less extensive hyalinized zone was observed than those of the control group. 3. In the pressure zones of both group, no root resorption was found. 4. Tn the tension zones of the experimental group, new bone deposition increased along the alveolar bone surface as compared with those of the control group. In conclusion, the results suggest the possibility that early orthodontic treatment after orthognathic surgery may have some benefits if the stability of the repositioned segment at surgery is secured.