매복 과잉치 발거시의 전후방전 위치선정

황동환,최형준,손흥규,최병재,Hwang, Dong-Hwan,Choi, Hyung-Jun,Sohn, Heung-Kyu,Choi, Byung-Jai 대한소아치과학회 1996 大韓小兒齒科學會誌 Vol.23 No.3

Surgical removal of impacted mesiodens can be performed easily when exact position of mesiodens is identified. This case report is argued about methodological approach of exact antero-posterior postioning of mesiodens using conventional cross-sectional occlusal film and periapical film. The author concludes, 1. Among various methods of positioning mesiodens, exact position of mesiodens can be determined with occlusal film and periapical film. 2. On operation, exact antero-posterior position of mesiodens can be determined with comparing occlusal images of adjacent teeth and anatomic structure to real ones. 3. It is important that exact removal course of mesiodens has to be determined in addition to exact determination of one's position, and that it has to be determined in regard to position, morphological basis, direction of impacted pattern of mesiodens and adjacent anatomic structure. 4. In 2 cases presented, both are mesiodens of inverted conical type, and impacted direction are class I and III respectively according to classification author suggested, and surgery can be perfomed with ease by different approach directions.

전위 매복된 상악 측절치와 상악 견치의 치험례

이기영,최형준,손흥규,Lee, Ki-Young,Choi, Hyung-Jun,Sohn, Heung-Kyu 대한소아치과학회 1999 大韓小兒齒科學會誌 Vol.26 No.4

치아의 전위는 매우 드문 치아 기형의 하나로서 발생 또는 맹출중 인접한 2개의 영구치의 위치가 서로 바뀐것을 말한다. 전위는 상악과 하악 모두에서 발생 가능한데 그중에서 상악에서의 발생이 더 흔하며 상악견치는 가장 호발하는 치아이다. 상악에서는 상악 견치와 제 1 소구치와의 전위가 가장 빈도가 높고 그 다음으로 상악 견치와 측절치와의 전위가 많다. 전위는 완전 전위와 불완전 전위로 나눌수 있는데 완전 전위는 치관뿐 아니라 치근의 위치까지 전위된 경우를 말하고 불완전 전위는 치근의 위치는 정상이고 치관만 전위된 경우이다. 전위의 원인에 대하여 명확하게 밝혀진 것은 없으나 유치의 만기잔존이나 조기상실, 발생중의 전위나 정상 맹출 경로로부터의 이탈, 유치열시기의 안면외상 등이 제기되고 있고 이밖에 과잉치, odontoma 또는 odontogenic cyst, 염증성 병소 등을 그 원인으로 생각해 볼 수 있다. 본 증례는 유치열시기의 안면외상으로 인하여 상악 영구 견치와 측절치의 전위가 발생한 경우로서 치료후 전위된 위치로의 양호한 배열을 이루었다. Transposition has been described as an interchange of position of permanent tooth and is a relatively rare dental anomaly. Transposition of teeth may occur both in the maxillary and mandibular arches. but it appears more often in the maxilla of individual teeth, the maxillary canine is the most often involved. A canine transposes most often with a first premolar and less frequently transposes with a lateral incisor. Incomplete transposition is a condition describing an interchange in the position of the crowns of two permanent teeth, while the root apices remain in their relative position. Complete transposition is a situation in which both the crowns and entire root structure are transposed. The etiologic factors of transposition are tooth buds interchange, retained deciduous canines, migration of the erupting canine, trauma to deciduous teeth etc. This report describes a case of a transposition between a maxillary left canine and a lateral incisor and impaction of a maxillary left central incisor due to trauma to deciduous dentition.

Russell-Silver Syndrome 환아의 치과적 관리

김준혁(Junhewk Kim),손흥규(Hyung-Kyu Sohn),김승혜(Seung-Hye Kim),최형준(Hyung-Jun Choi),이제호(Jae-Ho Lee) Asia association of Disability and Oral health 2010 International Journal of Disability and Oral Healt Vol.6 No.2

1. 러셀-실버 증후군 환아는 특징적인 소구증 및 유아기의 섭식 장애를 보이므로, 출생 후 필요시설소대 절제술을 고려해야 하며 특별히 고안된 구강위생 용품이 구강위생 증진에 도움이 될 수 있다. 2. 러셀-실버 증후군 환아의 우식 치료 시 개구량이 확보되지 않으므로 근육 이완을 위해 전신마취를 고려해야 하며, 소형의 핸드피스 및 버와 같은 기구들을 사용하여 접근하는 것이 치료를 수월케 하며 환아의불편감을 감소시킬 수 있다. Russell-Silver syndrome is a genetic disorder characterized by intrauterine and/or postnatal growth restriction and typical facies. The clinical feature is various due to heterogeneous genetic characters. Their common findings are short stature without catch-up growth, normal head size for age, a distinctive triangular face with prominent forehead and a pointed chin, low set ears and clinodactyly of the fifth fingers. Intraoral features of the syndrome are microdontia, delayed tooth eruption, hypodontia, and crowding. More than 400 case have been reported in the literature, and estimated incidence is from 1 in 3000 to 1 in 100,000. In this case we performed caries treatment under the general anesthesia for the patient with Russell-Silver syndrome. Dentist have to consider microstomia for the management of patients with Russell-Silver syndrome.

치아종에 의해 매복된 하악 제2 유구치의 교정적 견인

한윤범,김성오,이제호,최형준,손흥규,최병재,Han, Yoon-Beum,Kim, Seong-Oh,Lee, Jae-Ho,Choi, Hyung-Jun,Sohn, Hyung-Kyu,Choi, Byung-Jai 대한소아치과학회 2009 大韓小兒齒科學會誌 Vol.36 No.1

Tooth impaction refers to situations where a tooth fails to erupt due to mechanical blocking and remains unerupted beyond the normal time of eruption. It is commonly found in permanent dentition, but rarely in deciduous dentition. Tooth impaction is caused by systemic or local factors, and most common etiology is odontoma. Odontoma is also commonly found in permanent dentition, and rarely in deciduous dentition. We are presenting case of 4 year and 4 month year old girl, who had impacted and disto-angulated lower left deciduous second molar due to odontoma. We removed odontoma and performed orthodontic traction of impacted lower left deciduous second molar. Then, the impacted primary molar was erupted and acceptable occlusion was obtained. 치아매복이란 물리적인 장벽으로 치아맹출에 장애가 발생하는 것으로, 정상 맹출 시기까지 치아가 맹출하지 못하는 상태를 말하며, 영구치열기에서 주로 관찰되고, 유치열기에서는 드물다. 치아매복은 전신적 그리고 국소적인 요인에 의하여 일어나고, 치아종에 의한 매복이 자주 발생하는 것으로 보고되었으며, 치아종에 의한 매복 또한 대부분 영구치열기에 나타나고, 유치열기에서는 드물게 발생한다. 이 증례는 하악 좌측 제2유구치의 맹출지연을 주소로 내원한 4세 4개월 된 여아에서, 임상 및 방사선학적 검사 결과 매복된 하악 좌측 제2유구치와 제1대구치 교합면 상방에서 치아종을 관찰할 수 있었으며, 하악 좌측 제2유구치는 치아종에 의해 하악 제1대구치 방향으로 원심경사 되어 있었다. 이에 저자들은 치아종을 제거한 후 매복된 하악 좌측 제2유구치를 교정적으로 견인하고 맹출을 유도하여, 양호한 교합 관계를 얻었기에 이를 보고하는 바이다.

상악 유중절치의 병적 치근 흡수

최병재,정주현,최형준,손흥규,Choi, Byung-Jai,Chung, Chu-Hyun,Choi, Hyung-Joon,Sohn, Heung-Kyu 대한소아치과학회 2003 大韓小兒齒科學會誌 Vol.30 No.4

계승 영구치의 맹출시 상방에 위치한 유치의 치에서는 영구치와 근접한 치근첨에서부터 치근의 흡수가 일어나며 이를 생리적 치근 흡수라고 한다. 정상적인 영구치의 맹출과 관계없이 외상, 재식술, 교정치료, 치아의 지연 맹출, 불규칙적 맹출, 또는 종양이나 낭종의 성장 등과 관련되어 나타나는 치근의 흡수를 병적 치근 흡수라고 하며 생리적 치근 흡수와는 그 양상이 상이하고 다양하게 나타난다. 본 증례에서는 외상을 주소로 내원한 어린이를 대상으로 치근단 방사선 사진상에 나타나는 다양한 상악 유중절치의 병적 치근 흡수 양상을 관찰하여 다음과 같은 결과를 얻었다. 1. 외상성 손상을 받은 10개의 상악 유중절치에서 여러 가지 병적 치근 흡수 양상을 관찰하였다. 2. 병적 치근 흡수된 치아에서 치수절제술을 시행한 후에도 흡수는 지속적으로 진행되었다. Physiologic root resorption occur from the apex of the primary teeth close to the permanent teeth towards the apex. Pathologic root resorption occur on surfaces of root due to causes such as trauma, replantation, orthodontic treatment, delayed or irregular eruption of teeth, or growing cysts or tumors. In children, the most frequently affected teeth from trauma are the maxillary primary central incisors. After such an event, root resorption initiate from the traumatized pulp or periodontium. In this case report, periapical radiographs were used to evaluate the features of pathologic root resorption by studying patients with history of trauma. The following results were noted. 1. Pathologic root resorption was observed in various patterns in all of the 10 traumatized maxillary primary central incisors. 2. Though teeth with pathologic root resorption were treated with pulpectomy, the resorption process continued to progress.

3차원 전산화 단층촬영을 이용한 상악 정중 과잉치의 진단

이종갑,김성오,홍영우,손흥규 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.3

저자는 매복된 상악 정중 광잉치를 주소로 내원한 환아를 3차원 전산화 단층촬영술을 이용해 매복된 과잉치의 위치를 파악하였으며 다음의 결론을 얻었다. 1. 인접한 영구치에 대한 위해한 영향을 주지 않기 위해 상악 정중 매복 과잉치의 정확한 위치 편별이 요구된다. 2. 3차원 전산화 단층촬영법은 매복 과잉치의 위치판별에 있어서 객관적인 중요한 정보를 제공한다. The prevalence of the supernumerary tooth is 1~4%. It usually occurs in the permanent dentition. It frequently occurs in the maxillary midpalatal area. The presence of the supernumerary tooth causes the following problems;(1) interfering the eruption of successional tooth, (2) displacing the neighboring teeth, (3) resulting large diastema, (4) forming cystic change. So the supernumerary tooth should be remobed as soon as oissuble. To extract the supernumerary tooth, the exact position must be noticed first. Radiographic techniques that were used in the past are tube shift technique, right angle technique, sterioradiography, using radiopaque contrast media and conventional tomography. But these methods include the subjective opinion of the operator. So, a technique eliminating the operator's opinion and showing the position 3-dimentionally can be used. 3-dimentional computed tomography eqipped with dental softwares can show the position of the impated supernumerally tooth in 3-dimentionally position. It has an adzantage to eliminate the subjective opinion of the operator with a fast computer this techenique is done in a relatively short period of time . the data 3-dimentionally. sequential removal of the soft tissue and hard tissue(bone) CT number leaves the teeth alone in 3-dimentional position. The image can be seen from anywhere, so the operator can see the image in front, rear, upper, and lower positions. In both cases 1 and 2 the position of the impacted supernumerary tooth is viewed by the 3-dimensional computed tomography. And it made the operator easy to figureout the exact position.

연세대학교 치과병원 소아치과에 내원한 신환에 대한 분석연구

최형준,손흥규 大韓小兒齒科學會 1991 大韓小兒齒科學會誌 Vol.18 No.1

The author analyzed a total of 4,753 out-patients of the department of Pediatric Dentistry of the dental hospital of Yonsei University from January 4,1988 to December 31,1989 for the purpose of making public oral health plan more effective and the improvement of the hospital management system for better clinical dental practice. The results are follows; 1.The out-patients under the age of 5 composed of 52.5% of the total group. 2.In view of the chief complaints,the dental diseases due to dental caries ranked the top(56.5%),and orthodonic treatment(11.0%),and traumatic injury(10.1%),others(22.4%),ranked the next. 3.As for the sex distribution,the number of the male patients(56.7%) dominated the female(44.3%)and it showed the tendency that male patients were refered from local clinic more than female. 4.The children resided in residency area of Mapo Gu,Kyungki Do,Seudaemun Gu,Eunpeung Gu,Kangsu Gu,Yangchun Gu,Youngdeung Po Gu in the descending order. 5.The number of children with the seven systemic disease was 428 out of 4,753(9.0%) and 97 among them were cerebral-palsieds. 6.Such habits as finger sucking and tongue thrusting were more common with the children under the age of 6 and bruxism,lip sucking and mouth breathing were more common with the those 6 or more years old. 7.The out-patients reached in January,July,August and the least in April.

치근단절제술을 이용한 치근단 병소의 치료에 대한 증례보고

손흥규,최형준,이성준,김성오 大韓小兒齒科學會 1997 大韓小兒齒科學會誌 Vol.24 No.3

It has been reported that the operative treatment for the preservation of tooth having periapical lesion has shown over ninety percent of success whereas in the case where calcified canal is severe, canal is perforated, ledge is formed, tooth restored by post and core and cases where symptoms still exist after treatment, endodontic treatment may not all be the solution in attaining a successful treatment. Thus Apicoectomy would generally be used to prevent the loss of tooth having periapical lesion where treatment prognosis is poorly evaluated by endodontic treatment. In case 1 and 2, endodontic treatment was applied due to unilocular radiolucent lesion in periapical area but the symptoms somehow did not show improvement and therefore operated apicoectomy, and as in case 1, favorable results were attained but as in case 2, yet more observation has to be done. The followings are the results we have concluded: 1. In the process of endodontic treatment, absolute canal obturation has great effect on attaining successful treatment. 2. In cases where endodontic treatment is not highly recommended, for example, tooth having dental pulp and periapical lesion, favorable results can be attained by applying apicoectomy.

매복 과잉치 발거시의 전후방적 위치선정

최형준,손흥규,최병재,황동환 大韓小兒齒科學會 1996 大韓小兒齒科學會誌 Vol.23 No.3

Surgical removal of impacted mesiodens can be performed easily when exact position of mesiodens is identified. This case report is argued about methodological approach of exact antero-posterior postioning of mesiodens using conventional cross-sectional occlusal film and periapical film. The author concludes, 1. Among various methods of positioning mesiodens, exact position of mesiodens can be determined with occlusal film and periapical film. 2. On operation, exact antero-posterior position of mesiodens can be determined with comparing occlusal images of adjacent teeth and anatomic structure to real ones. 3. It is important that exact removal course of mesiodens has to be determined in addition to exact determination of one's position, and that it has to be determined in regard to position, morphological basis, direction of impacted pattern of mesiodens and adjacent anatomic structure. 4. In 2 cases presented, both are mesiodens of inverted conical type, and impacted direction are class Ⅰ and Ⅲ respectively according to classification author suggested, and surgery can be performed with ease by different approach directions.

구순 구개열 환아의 수유 보조 장치에 대한 증례보고

최형준,손흥규,최병재,박동석 大韓小兒齒科學會 1995 大韓小兒齒科學會誌 Vol.22 No.2

Cleft lip, cleft palate, cleft lip and palate are the most common congenital anomalies in cranio-orofacial region. These anomalies lead to esthetic problem as well as to difficulties in feeding and speech and also to chronic infection of upper airway and to disturbance of jaw growth during growing up. Especially, some difficulties during feeding make parents to be confused and puts infants in dangerous position. But these difficulties can be controlled by proper feeding methods according to pattern of cleft lip and palate. Among these feeding methods, feeding appliance is the most safe and relatively easy to manufacture. Early wearing of this appliance makes cleft lip and palate infants to a normal feeding and weight gain. As a member of team approach for the treatment of cleft lip and palate, a pediatric dentist should solve the feeding problems which cleft lip and palate infants and its parents are confronted and help in receiving further treatment.