지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.5
- 수록면
- 328 - 338 (11page)
이용수
초록· 키워드
오류제보하기
Introduction: The aim of the current study was to describe the prevalence and treatment of mandibular first molar eruption disturbances.
Methods: A total of 38 mandibular first molars(M1mn) from 36 patients(17 males and 19 females; aged 9 years 2 months?35 years 10 months) were identified from the 13,391 patients that received orthodontic treatment from 1983?2012. The subjects were classified into 3 categories based on panoramic radiographic examination: impaction due to ectopic position of the tooth germ relative to the contra-side same tooth(Group 1), impaction due to obstruction of the eruption path with cyst or calcium mass (Group 2), and primary and secondary retention due to defects in the follicle or periodontal ligament(PDL; Group 3). The treatment outcomes were evaluated into four categories: no treatment(A), orthodontic traction(B), autotransplantation(C), and extraction due to orthodontic traction failure(D).
Results: The prevalence rate of M1mn eruption disturbances in this sample was 0.27%. In Groups 1 and 2, most of the impacted M1mn were erupted successfully by orthodontic traction. In Group 3, most of the retained M1mn were failed to erupt and recommended for extraction.
Conclusions: Treatment prognosis was favorable on Group 1 & 2 than Group 3. After removing an element of the cause in case of Group 1 & 2, orthodontic traction or periodic observation will be recommended.
Methods: A total of 38 mandibular first molars(M1mn) from 36 patients(17 males and 19 females; aged 9 years 2 months?35 years 10 months) were identified from the 13,391 patients that received orthodontic treatment from 1983?2012. The subjects were classified into 3 categories based on panoramic radiographic examination: impaction due to ectopic position of the tooth germ relative to the contra-side same tooth(Group 1), impaction due to obstruction of the eruption path with cyst or calcium mass (Group 2), and primary and secondary retention due to defects in the follicle or periodontal ligament(PDL; Group 3). The treatment outcomes were evaluated into four categories: no treatment(A), orthodontic traction(B), autotransplantation(C), and extraction due to orthodontic traction failure(D).
Results: The prevalence rate of M1mn eruption disturbances in this sample was 0.27%. In Groups 1 and 2, most of the impacted M1mn were erupted successfully by orthodontic traction. In Group 3, most of the retained M1mn were failed to erupt and recommended for extraction.
Conclusions: Treatment prognosis was favorable on Group 1 & 2 than Group 3. After removing an element of the cause in case of Group 1 & 2, orthodontic traction or periodic observation will be recommended.
목차
ABSTRACT
Ⅰ. INTRODUCTION
Ⅱ. MATERIALS AND METHODS
Ⅲ. RESULTS
Ⅳ. DISCUSSION
Ⅴ. CONCLUSION
참고문헌
참고문헌 (19)
참고문헌 신청
[단행본] - Andreasen JO / 1997 / Textbook and color atlas of tooth impactions / Munksgaard : 66 ~ 91
[학술지(정기간행물)] - Kramer RM / 1970 / The incidence of impacted teeth / Oral Surg Oral Med Oral Pathol 29 : 237 ~ 241
[학술지(정기간행물)] - Grover PS / 1985 / The incidence of unerupted permanent teeth and related clinical cases / Oral Surg Oral Med Oral Pathol 59 : 420 ~ 425
[학술지(정기간행물)] - Chintakanon K / 1998 / Ectopic eruption of the first permanent molars : prevalence and etiologic factors / Angle Orthod 68 : 153 ~ 160
[학술지(정기간행물)] - Watanabe Y / 2014 / Orthodontic treatment combined with tooth transplantation for an adult patient with a missing mandibular first molar: long-term follow-up / Am J Orthod Dentofacial Orthop 145 (4 Suppl) : S114 ~ S124
[학술지(정기간행물)] - Kramer RM / 1970 / The incidence of impacted teeth / Oral Surg Oral Med Oral Pathol 29 : 237 ~ 241
[학술지(정기간행물)] - Grover PS / 1985 / The incidence of unerupted permanent teeth and related clinical cases / Oral Surg Oral Med Oral Pathol 59 : 420 ~ 425
[학술지(정기간행물)] - Chintakanon K / 1998 / Ectopic eruption of the first permanent molars : prevalence and etiologic factors / Angle Orthod 68 : 153 ~ 160
[학술지(정기간행물)] - Watanabe Y / 2014 / Orthodontic treatment combined with tooth transplantation for an adult patient with a missing mandibular first molar: long-term follow-up / Am J Orthod Dentofacial Orthop 145 (4 Suppl) : S114 ~ S124
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