Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
권호 표지
DOI QR코드

DOI QR Code

ANALYSIS OF STRESS AND DISTORTION DISTRIBUTION USING THE FINITE ELEMENT METHOD - EFFECTS OF THE CHIN CAP ON THE MANDIBLE -

유한요소법을 이용한 응력 및 변형 분포의 분석 - 하악골의 이모장치효과 -

  • Lee, Young-Hoon (Department of Pediatric dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Baik, Byeong-Ju (Department of Pediatric dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Kim, Jae-Gon (Department of Pediatric dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Yang, Yeon-Mi (Department of Pediatric dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Lee, Min-Jeong (Department of Pediatric dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Ko, Young-Han (Department of Pediatric dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University)
  • 이용훈 (전북대학교 치과대학 소아치과학교실 및 구강생체과학연구소) ;
  • 백병주 (전북대학교 치과대학 소아치과학교실 및 구강생체과학연구소) ;
  • 김재곤 (전북대학교 치과대학 소아치과학교실 및 구강생체과학연구소) ;
  • 양연미 (전북대학교 치과대학 소아치과학교실 및 구강생체과학연구소) ;
  • 이민정 (전북대학교 치과대학 소아치과학교실 및 구강생체과학연구소) ;
  • 고영한 (전북대학교 치과대학 소아치과학교실 및 구강생체과학연구소)
  • Received : 2011.01.21
  • Accepted : 2011.04.04
  • Published : 2011.05.31
Download PDF
⟨ Previous Next ⟩

Abstract

The aims of this study were analyze the amount of stress condition when the traction force was applied to the condyle head from the chin area of mandible and amount of distortion condition when intended 0.5 mm distraction distance from surface or one point of dissected midline of mandible. For this study, 3D finite element analysis were performed. The following results were obtained : 1. When traction force of 500 g was applied to the condyle head from the chin area, condylar neck area showed the greatest amount of stress and coronoid process was the least amount of stress area. For the amount of distortion condition, infra dental area showed the greatest. 2. When 0.5 mm of intended surface distortion was applied after dissection of mid-mandible area, base anterior area showed the greatest amount of stress but the least stress area was coronoid process. For the amount of distortion, infra dental, menton area showed the greatest amount. 3. One point distortion was applied after dissection of mid-mandible area, ramus posterior area showed the greatest amount of stress and menton area were the least stress condition. For the amount of distortion, menton area showed the greatest amount of distortion condition.

두개안면부에서 하악은 태생 4주에 발생하는 첫번째 아가미궁에서 분화되며 맥켈연골이라 알려져 있는 긴 막대기 모양의 연골의 외측부에서 골화가 시작된다. 이후 하악골은 골의 첨가와 흡수에 의해 성장 발육하게 된다. 이런 하악골의 성장 발육이 과하거나 부족한 경우 상하악골의 부조화에 의한 부정교합이 발생되게 되고, 이를 3급 또는 2급 부정교합이라 부른다. 3급 부정교합의 치료를 위해 지금까지 많은 방법들이 사용되어 왔으며, 그중 가장 널리 사용되어지는것이 이모장치이다. Distraction osteogenesis는 강한 힘이나 수술에 의해 분리된 두 개의 골표면 사이에서 새로운 신생골이 형성되는 일련의 생물학적인 과정을 말한다. Distraction force가 callus tissue에 작용되어 골이 분리되면 골과 연조직에 가해지는 신장력이 새로운 골 생성을 자극하게 된다. 이번 연구의 목적은 3차원 유한요소 model을 이용하여 이모장치의 하중에 대한 하악골의 응력분포를 알아보고, 하악골 절개 (mandibular midline distraction) 후 강제변형에 대한 응력분포를 알아보는 것이다.

Keywords

References

  1. Orliaguet T, Darcha C, Decholotte P, et al. : Meckel's cartilage in the human embroy and fetus. Anat Rec, 238:491-497, 1994. https://doi.org/10.1002/ar.1092380408
  2. Bontemps C, Cannistra C, Hannecke V, et al. : The first appearance of Meckel's cartilage in the fetus Bull Group. Int Rech Sci Stomatol Odontol, 43:94-99, 2001.
  3. Orliguet T, Dechelotte P, Scheye T, et al. : The relationship between Meckel's cartilage and the development of the human fetal mandible. Surg radiol Anat, 15:113-118, 1993. https://doi.org/10.1007/BF01628309
  4. Iseri H, Solow B : Change in the width of the mandibular body from 6 to 23 years of age: an implant study. Eur J Orthod, 22:229-238, 2000. https://doi.org/10.1093/ejo/22.3.229
  5. Ko YI, Baek SH, Mah J, et al. : Determinants of successful chincup therapy in skeletal Class III malocclusion. Am J Orthod Dentofacial Orthop, 26:33-41, 2004.
  6. Kapur A, Chawla HS, Utreja A, et al. : Early class III occlusal tendency in children and its selective management. J Indian Soc Pedod Prev Dent, 26:107-113, 2008. https://doi.org/10.4103/0970-4388.43191
  7. Graver TM, Cheung DD, Aoba JT : Dentofacial orthopedics versus orthodontics. J Am Dent Assoc, 75:1145-1166, 1967. https://doi.org/10.14219/jada.archive.1967.0331
  8. Meithke RR, Lindenau S, Dietrich K : The effect of Frankel's function regulator type III on the apical base. Eur J Orthod, 25:311-318, 2003. https://doi.org/10.1093/ejo/25.3.311
  9. Graber LW : Chin cup therapy for mandibular prognathism. Am J Orthod, 72:23-41, 1977. https://doi.org/10.1016/0002-9416(77)90122-1
  10. Sugawara J, Asano T, Endo N, et al. : Long-term effects of chincap therapy on skeletal profile in mandibular prognathism. Am J orthod Dentofacial Orthop, 98:127-133, 1990. https://doi.org/10.1016/0889-5406(90)70006-X
  11. Tanne K, Lu YC, Tanaka E, et al. : Biomechanical changes of the mandible from orthopaedic chin cup force studied in a three-dimensional finite element model. Eur J Orthod, 15:527-533, 1993. https://doi.org/10.1093/ejo/15.6.527
  12. Asano T : The effects of mandibular refractive force on the growing rat mandible. Am J Orthod Dentofacial Orthop, 90:464-474, 1986. https://doi.org/10.1016/0889-5406(86)90106-X
  13. Drew SJ, Schwartz MH, Sachs SA : Distraction osteogenesis. NY State Dent J, 65:26-29, 1999.
  14. 石塚 治: Chin cap を用いた小兒反対咬合症例例についての考察, 日ベッグ矯齒誌, 13:21-31, 1991.
  15. 井出正道, 守安克也, 高橋智秀 : 鶴見大學齒學部府屬病院小兒齒科診療室における咬合異常とその治療に關すゐ臨床統計的觀察(第3報), 小兒齒誌, 38:795-802, 2000.
  16. 大出轉司, 町屋仁躬: 弱い牽引力によゐチンキャップの長期使用が下顎頭位に及ほす影響, 日矯齒誌, 56:203-210, 1997.
  17. 花田晃治, 角町正勝 : Chin cap(頣帽裝置) の作用機序-頭部X跣規格사 によゐ檢討-, 國際齒科ジャ-ナル, 1:20-26, 1975.
  18. 矢野 理 : 乳齒列期の反対咬合症例に関する硏究 第 2 報 Chin cap による治療效果について, 小兒齒誌, 18:219-246, 1980.
  19. 糠塚重德 : 顎外力 (チンキャップ) によゐ整形效果の時間的変遷に関する硏究, 東北大學齒學雜誌, 1:1-17, 1982.
  20. 小田傳雄, 上田昌夫, 宮川泰郎 : Chin cap 整形力の下顎骨個成長への影響, 日矯齒誌, 48:355-361, 1989.
  21. 荘 森原 : Chin capの作用に関する硏究, 九州歯会誌, 46:492-496, 1992.
  22. 守安克也 : 骨格成反対咬合を有する日本人小兒の顔面頭蓋の発育変化とchin cap 療法による咬合改善との関連について-日本人小兒100症例の断面資料と一卵性雙生兒症例の經年資料の比較-, 鶴見齒學 , 27:347-354, 2001.
  23. Hirofumi Hotta, MiKio Kato, Michiharu Daito : Research on the Occlusa Guidance in Childhood using the Finite Element Methods -On the Abnormality of the Lower Dentition and Mandibulatory Bone for the Effects of the Chin Cap. J of JSPD, 47:41-50, 2009.