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
- 2019.5
- 수록면
- 188 - 196 (9page)
이용수
초록· 키워드
오류제보하기
Objective: The aim of this finite element study was to clarify the mechanics of tooth movement in palatal en-masse retraction of segmented maxillary anterior teeth by using anchor screws and lever arms. Methods: A three-dimensional finite element method was used to simulate overall orthodontic tooth movements. The line of action of the force was varied by changing both the lever arm height and anchor screw position. Results: When the line of action of the force passed through the center of resistance (CR), the anterior teeth showed translation. However, when the line of action was not perpendicular to the long axis of the anterior teeth, the anterior teeth moved bodily with an unexpected intrusion even though the force was transmitted horizontally. To move the anterior teeth bodily without intrusion and extrusion, a downward force passing through the CR was necessary. When the line of action of the force passed apical to the CR, the anterior teeth tipped counterclockwise during retraction, and when the line of action of the force passed coronal to the CR, the anterior teeth tipped clockwise during retraction. Conclusions: The movement pattern of the anterior teeth changed depending on the combination of lever arm height and anchor screw position. However, this pattern may be unpredictable in clinical settings because the movement direction is not always equal to the force direction.
목차
INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
CONCLUSION
REFERENCES
참고문헌 (19)
참고문헌 신청
Gjessing P. / 1992 / Controlled retraction of maxillary incisors / Am J Orthod Dentofacial Orthop 101:120~131
Park YC / 2000 / Lever-arm mechanics in lingual orthodontics / J Clin Orthod 34:601~605
Chung KR / 2001 / Corticotomy-assisted orthodontics / J Clin Orthod 35:331~339
Hong RK / 2005 / Lever-arm and miniimplant system for anterior torque control during retraction in lingual orthodontic treatment / Angle Orthod 75:129~141
Kim SH / 2004 / Severe Class II anterior deep bite malocclusion treated with a C-lingual retractor / Angle Orthod 74:280~285
Park YC / 2000 / Lever-arm mechanics in lingual orthodontics / J Clin Orthod 34:601~605
Chung KR / 2001 / Corticotomy-assisted orthodontics / J Clin Orthod 35:331~339
Hong RK / 2005 / Lever-arm and miniimplant system for anterior torque control during retraction in lingual orthodontic treatment / Angle Orthod 75:129~141
Kim SH / 2004 / Severe Class II anterior deep bite malocclusion treated with a C-lingual retractor / Angle Orthod 74:280~285
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UCI(KEPA) : I410-ECN-0101-2019-515-000766693