한국인의 매복치 빈도에 대한 연구

이용오,문선혜,사공억 啓明大學校 醫科大學 1991 계명의대학술지 Vol.10 No.4

The authors have made on the frequency studies on the impacted tooth of 419 cases in the 252 patients, 170 males & 82 females. The survey has been undertaken to classify the impacted tooth of korean through panoramic view by means of frequency of the impacted tooth, sexual difference, age, jaw, impacted site and number of the impacted teeth. The results were obtained as follows: Possesive ratio of the impacted teeth was 16.3% by patients and average number of impacted teeth was 1.66. The number of average the impacted teeth was higher in female than male. In the relation of the impacted teeth by jaw region, mandible was higher than that of maxilla. The occurrence of the impacted teeth was the most highest in the 21-25 years grade. Most prevalent impacting teeth was third molar and to the next mesiodense, upper canine. In the relation of the possesive number of the impacted teeth, one case is most prevalent and to the next two cases.

Odontoma: a retrospective study of 73 cases

안서영,안창현,최갑식 대한영상치의학회 2012 Imaging Science in Dentistry Vol.42 No.2

Purpose: The purpose of the present study was to retrospectively evaluate the clinical findings and treatment results for impacted permanent teeth associated with odontomas. Materials and Methods: We retrospectively investigated 73 odontomas in 72 patients who visited Kyungpook National University Dental Hospital from April 2004 through November 2011. The study was performed using medical records, panoramic radiographs, and pathological reports. Data gathered included age, gender, location, chief complaints, effects on dentition, and treatment of odontoma and the impacted tooth associated with odontoma. Results: Most compound odontomas (46.7%) were found in the second decade and complex odontomas were not related to age. Odontomas showed no gender predilection. Fifty-five cases (75.3%) of odontomas were detected on routine dental radiographs. Sixty percent of compound odontomas occurred in the canine area and 57.1% of complex odontomas in the molar areas. Impaction of permanent teeth (61.6%) was the most common complication on the adjacent teeth. Most odontomas (84.9%) were removed surgically and impacted permanent teeth were managed by surgical removal (53.2%), orthodontic treatment (25.5%), or surgical repositioning (6.4%). There was a statistically significant relation between age and preservation of the impacted permanent teeth associated with odontomas (p<0.01). Conclusion: Early detection and treatment of odontomas increase the possibility of preservation of the impacted tooth. Therefore, it would be suggested that periodic panoramic examination during the first and second decade of life might be beneficial for the early detection and better prognosis of odontomas. Purpose: The purpose of the present study was to retrospectively evaluate the clinical findings and treatment results for impacted permanent teeth associated with odontomas. Materials and Methods: We retrospectively investigated 73 odontomas in 72 patients who visited Kyungpook National University Dental Hospital from April 2004 through November 2011. The study was performed using medical records, panoramic radiographs, and pathological reports. Data gathered included age, gender, location, chief complaints, effects on dentition, and treatment of odontoma and the impacted tooth associated with odontoma. Results: Most compound odontomas (46.7%) were found in the second decade and complex odontomas were not related to age. Odontomas showed no gender predilection. Fifty-five cases (75.3%) of odontomas were detected on routine dental radiographs. Sixty percent of compound odontomas occurred in the canine area and 57.1% of complex odontomas in the molar areas. Impaction of permanent teeth (61.6%) was the most common complication on the adjacent teeth. Most odontomas (84.9%) were removed surgically and impacted permanent teeth were managed by surgical removal (53.2%), orthodontic treatment (25.5%), or surgical repositioning (6.4%). There was a statistically significant relation between age and preservation of the impacted permanent teeth associated with odontomas (p<0.01). Conclusion: Early detection and treatment of odontomas increase the possibility of preservation of the impacted tooth. Therefore, it would be suggested that periodic panoramic examination during the first and second decade of life might be beneficial for the early detection and better prognosis of odontomas.

다수의 매복치 및 과잉치를 동반한 쇄골두개이형성증 환자에서 골내고정원 및 악간견인을 이용한 교정치료

김하림(Harim Kim),천주희(Joo-He Chun),조웅기(Ung Ki Cho),이기준(Kee-Joon Lee) 대한구순구개열학회 2022 대한구순구개열학회지 Vol.25 No.1

Cleidocranial dysplasia (CCD) is a genetic skeletal condition with autosomal dominant inheritance. It is characterized by various skeletal and dental abnormalities, such as missing clavicles, hypoplastic maxilla, retained deciduous teeth, and supernumerary and impacted permanent teeth. In such patients forced eruption of impacted teeth tends to be challenging due to the limited osteogenesis. The present case illustrates the orthodontic and surgical management of a 15-year-old female patient with CCD accompanied by multiple supernumerary and impacted teeth using intermaxillary traction and bone-borne anchorage. After the surgical opening of the impacted teeth, a miniscrew-assisted rapid palatal expander (MARPE) was delivered in combination with a facemask for anteroposterior and transverse development of the maxilla. Following the maxillary expansion, a fixed appliance was bonded sequentially, first in the maxilla and then in the mandible for space regaining and eruption of the impacted teeth. Supernumerary teeth were removed successively during the treatment. The treatment was completed after 31 months with successful eruption and alignment of the impacted teeth, and the 3-year-follow-up showed satisfactory posttreatment stability. As shown in the present case, early diagnosis and timely orthodontic and surgical interventions are crucial to avoid further skeletal and dental complications and to facilitate aesthetic and functional rehabilitation in patients with CCD.

가천의대 길병원 교정과에 내원한 매복치 환자의 특성과 치료기간 및 방법에 관한 연구 (2005년~2008년)

문철현(Cheol-Hyun Moon),강현욱(Hyun-Wook Kang),최진휴(Jin-Hugh Choi) 대한치과의사협회 2011 대한치과의사협회지 Vol.49 No.4

Purpose: An impacted tooth is defined as a tooth that shows delayed eruption and is expected to erupt incompletely by clinical and radiograph examination despite it reaching its expected time of eruption. The aims of this study were to investigate the clinical and radiological characteristics and treatment duration and method of impacted teeth in Korean patients. Materials and Methods: For this study we used clinical records, study models, panoramic radiographs and intraoral photographs of patients who attended Gachon University Gil Hospital Orthodontic Department between 2005 and 2008. There were 164 patients with a total number of 202 impacted teeth. Results: Male patients shows a little more prevalence than female patients (1.13:1). The under 12 age group had the highest prevalence of tooth impaction, and the over 19 age group showed the least prevalence of tooth impaction. The ratio of tooth impaction between the left to right ratio was 1.73:1 and maxilla and mandible was 1.84:1. The impacted teeth were most commonly positioned buccally (76 cases, 41.5%). Full nap closure technique (108 cases, 81.2%)was most frequently used for attachment of surgical traction hooks. Maxillary canine impaction was most commonly encountered both in male and female patients. The mean treatment period was 12.2 months and the success rate of treatment was 90.3%. The canine tooth shows the longest treatment time and highest failure rate. The ankylosis was the major cause of failure. Conclusion: Impacted teeth most commonly show in left side maxilla in the under 12 age group. And it is most commonly positioned buccally. The mean treatment period was 12.2 months, and the success rate of treatment was 90.3%.

Comprehensive orthodontic treatment of a young girl with an odontogenic keratocyst and impacted teeth in the mandible

Won-Kyeong Baik,백형선,최성환 대한치과교정학회 2020 대한치과교정학회지 Vol.50 No.1

Odontogenic keratocysts (OKCs) are one of the most aggressive cysts in the oral and maxillofacial area because of their high recurrence rate and infiltrative behavior. In growing patients with OKCs, a radical treatment approach might cause numerous complications, including the disturbance of jaw growth and loss of the involved tooth. This case report describes successful comprehensive orthodontic treatment combined with marsupialization of the cyst in a young girl who exhibited an OKC with impacted teeth. The 10-year-old girl presented with an OKC extending from the mandibular symphysis through the left mandibular body, with ectopic impaction of the mandibular left canine and first premolar, as well as congenitally missing bilateral mandibular second premolars. Interestingly, spontaneous improvement of the positions of the ectopic impacted teeth, along with a reduction in the size of the cyst, occurred during marsupialization. The sequential use of removable and fixed appliances enabled orthodontic traction of the impacted teeth. The treatment outcome was stable at 2.5 years after the end of the treatment. We speculate that comprehensive orthodontic treatment combined with marsupialization can be an effective treatment strategy for patients with OKCs, especially when they are encountered in young, growing patients with impacted teeth.

Autotransplantation of an ectopic impacted premolar with sinus lift and allogenic bone graft

Pang, N. S.,Choi, Y. K.,Kim, K. D.,Park, W. Blackwell Publishing Ltd 2011 International endodontic journal Vol.44 No.10

<P><B>Pang NS, Choi YK, Kim KD, Park W.</B> Autotransplantation of an ectopic impacted premolar with sinus lift and allogenic bone graft. <I>International Endodontic Journal</I>, <B>44</B>, 967–975, 2011.</P><P><B>Abstract</B></P><P><B>Aim </B> This article presents a case report of autogenous tooth transplantation to a site which had insufficient bone volume using a sinus lift and allogenic bone graft.</P><P><B>Summary </B> An ectopic, fully impacted premolar tooth was autotransplanted from its ectopic impaction site into its original site, where there was insufficient recipient vertical bone volume because of sinus expansion. The deciduous tooth was extracted from the recipient site, and the sinus membrane detached and elevated via the alveolar socket. Allogenic bone grafting was performed, and the impacted premolar was transplanted into the prepared site. To improve adaptation, the recipient site was prepared using a rapid prototype tooth model, a replica tooth which allowed complete socket preparation in advanced of the actual removal of the donor tooth. The donor tooth was fixed with sutures and maintained for 17 days to allow physiologic movement. Root canal treatment was initiated 24 days after autotransplantation, and an intra‐canal medicament was used for 4 months. Canal filling was completed 5 months after autotransplantation. There was no root resorption of the transplanted tooth, and the grafted bone was well preserved and had no signs of infection.</P><P><B>Key learning points </B> <P> When the recipient bone volume is insufficient, autotransplantation can be preceded by bony augmentation.</P><P> The preparation of the recipient tooth socket using a tooth replica from CBCT reduces the extra‐oral time of the actual tooth and promotes better periodontal ligament healing.</P><P> Careful evaluation of the pulp status of the donor tooth is important in advance of timely endodontic treatment.</P></P>

치성 각화낭에서 매복치 동반 여부에 따른 Ki-67 발현 비교

박철우,김도경,안상건,김수관,윤정훈 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.1

Odontogenic keratocysts(OKCs) are frequently associated with erupted or impacted tooth. In such instances, the radiographic features simulate those of a dentigerous cyst. The purpose of this study was to evaluate a comparative immunohistochemical expression of Ki-67 as a proliferative marker in the OKC associated with or without impacted tooth. In addition, we have also been investigated with regard to the proliferative activity comparing the unilocular and multilocular varieties of the OKC. The material for this study consisted of thirty-two cases of OKCs (OKC with impacted tooth, n=16; OKC without impacted tooth, n=16) and ten cases of dentigerous cysts as a comparison. The results revealed that the proliferative activity of OKCs with impacted tooth was higher than those of dentigerous cysts. However, there was no correlation between Ki-67 immunoreactivity and association with or without impacted tooth in 32 cases of OKCs. In addition, this present study showed that there was no correlation between the unilocular and multilocular varieties of the OKCs imn proliferative activity.

Anterior implant placement in the presence of maxillary impacted teeth: Case reports

Da-Min Park,Hyeong-Gi Kim,Young-Kyun Kim 대한치과이식임플란트학회 2021 The Korean Academy of Implant Dentistry Vol.40 No.3

There are sometimes canine or supernumerary teeth impacted at premaxilla area in adult patients. If impacted tooth exists at the implant site, we regularly extract the teeth before implantation. However we wonder if we must extract the impacted tooth for implantation. In this report, We present the cases in which bone grafts were performed after tooth extraction and implants were placed and cases in which implants were placed without extraction. We intend to provide answers to questions along with a literature review.

한국인 매복치 환자의 특성과 상악 매복견치 치료 성공 및 치료기간에 미치는 요소에 관한 연구

김상연(Sang-Yeon Kim),문철현(Cheol-Hyun Moon),최진휴(Jin-Hugh Choi) 대한치과의사협회 2023 대한치과의사협회지 Vol.61 No.6

Purpose: To investigate the characteristics of impacted teeth in Korean patients and the factors affecting the treatment success and period of upper impacted canines. Materials and Methods: Among the patients who visited Department of Orthodontics at Gil Hospital from 2010 to 2019, we evaluated 438 subjects who had sufficient medical records for evaluation of impacted tooth characteristics. Results: A total of 570 cases ware evaluated for this study (316 cases in male, 254 cases in female patients) and the total number of patients was 438, of which 240 were males and 198 were females. Most of them were between the ages of 11 and 15, and the number of cases in the age group reached 298. There were 406 cases in the maxilla and 164 cases in the mandible respectively. The impacted teeth were often located in the center of arch rather than buccal or lingual. Repositioned flap (RF) method was the most common surgical exposure technique. Orthodontic treatment was performed in 378 cases, and the success rate was 94.1% in the maxilla, and 93.6% in the mandible. In order to find out the factors affecting the treatment success and treatment duration of maxillary impacted canines, gender, age, axis angulation and tooth position were evaluated. Age was the most significant factor in determining the treatment success, while ankylosis was the most common cause of the treatment failure. And age and axis angulation were factors influencing the treatment period. Conclusion: It is necessary to make various and continuous efforts to increase the treatment success rate and shorten the treatment period of impacted teeth.

Orthodontic traction of a horizontally impacted mandibular second premolar

Yuchen Zheng,Young-Soo Seo,Min-Hee Oh,Jin-Hyoung Cho 조선대학교 치의학연구원 2023 Oral Biology Research (Oral Biol Res) Vol.47 No.1

Impacted mandibular second premolars account for 12%–24% of all types of impacted teeth. For impacted mandibular second premolars, the mainstay of treatment is conservative management or orthodontic traction after surgical exposure. The choice of treatment mainly depends on root development, location, and direction of the impacted tooth. This report describes the case of a 14-year-old female patient with an impacted mandibular second premolar near the root of the first molar. The premolar was horizontally impacted in the distolingual direction. By referring to a virtual three-dimensional tooth model, the treatment plan was to extract the retained primary molar and perform orthodontic traction after surgical exposure. No complications such as root resorption of the mandibular first molar occurred during orthodontic traction of the impacted mandibular second premolar.