The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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The effect of lip thickness on lip profile change after orthodontically treated patients with 4 first bicuspid extraction

Basic upper lip thickness에 따른 교정치료 후 입술 이동량의 차이

  • 박선형 (국민건강보험공단 일산병원) ;
  • 박성헌 (연세대학교 치과대학 교정학교실) ;
  • 조영문 (연세대학교 치과대학 교정학교실) ;
  • 김정훈 (연세대학교 치과대학 교정학교실)
  • Published : 2002.10.01
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Abstract

After orthodontic treatment, there are several changes in soft tissue profile. Changes appear at lower anterior facial profile area, especially upper and lower lip. But there are many individual variations in the pattern of changes. So, this study was conducted to find out that the basic upper lip thickness could be one of the factors that could influence the treatment results. The samples were composed of 43 adult patients who had their 4 first premolars extracted. Groups were classified by their basic lip thickness. In group 1(thin upper lip group), there was negative relationship between mentolabial angle and lower lip change. In group 2(average lip thickness group), upper lip change was related to upper incisor change, lower incisor change, lower lip change and nasolabial angle change. And lower lip change was related to upper lip change, upper incisor change, lower incisor change. In group 3(thick upper lip group), there was no relation between both lip change and other variables.

교정치료 후 연조직의 변화가 나타난다. 특히, 하안면부위에 많은 변화를 일으키게 되며, 대표적으로 입술은 치아 이동량의 $60\~70\%$정도 이동한다고 알려져 있다. 하지만, 이동량은 개인마다 그 양상이 다양하다. 본 연구는 환자의 입술두께에 따라 연조직 이동 양상에 차이가 있는지 여부를 조사하는데 그 목적이 있다. 발치를 동반한 교정치료를 받은 성인환자를 대상으로 basic upper lip thickness에 따라 환자를 분류한 결과, 두께가 얇은 군(group 1)에서 치료 후 연조직 변화에 영향을 미치는 요인으로는 mentolabial angle와 하순의 변화간에 음의 상관관계를 보였다. 두께가 평균인 군(group 2)에서 상순의 변화에 영향을 미치는 요소로는 상악전치의 변화, 하악전치의 변화, 하순의 변화, nasolabial angle의 변화로 나타났으며, 하순의 변화에 영향을 미치는 요소로는 상순의 변화, 상악전치의 변화, 하악전치의 변화로 나타났다. 두께가 두꺼운 군(group 3)에서 는 상순, 하순의 변화는 전치위치의 변화나 연조직 변화와는 관련 없음으로 관찰되었다.

Keywords

References

  1. Lo FD, Hunter WS. Changes in nasolabial angle related to maxillary incisor retraction. Am J Orthod. 1982 : 82 : 384-91 https://doi.org/10.1016/0002-9416(82)90187-7
  2. Profitt WR, White RP(역자 서정훈, 남동석, 김명진). 수술-교정치료학, 서울 : 지성출판사, 1996: 170
  3. Lai J, Ghosh J, Nanda RS. Effects of orthodontic therapy on the facial profile in long and short vertical facial patterns. Am J Orthod Dentofac Orthop. 2000: 118 : 505-13 https://doi.org/10.1067/mod.2000.110331
  4. Kocadereli I. Changes in soft tissue profile after orthodontic treat-ment with and without extractions. Am J Ortbod Dentofac Orthop 2002 : 122: 67-72 https://doi.org/10.1067/mod.2002.125235
  5. Oliver BM. The influence of lip thiclmess and strain on upper lip response to incisor retraction. Am J Orthod. 1982 : 82 : 141-8 https://doi.org/10.1016/0002-9416(82)90492-4
  6. Wisth PJ. Soft tissue reponse to upper incisor retractioin in blys, Br J Orthod. 1974 : 1 : 199-204 https://doi.org/10.1179/bjo.1.5.199
  7. Kasai K Soft tissue adaptability to hard tissues in facial profiles. Am J Orthod Dentofac Ortbop 1998 : 113 : 674-84
  8. Teitelbaum V, Balon-Perin A, De Maertelaer V, Daelemans P, Glineur R. Impact of dental and skeletal movements on the facial profile within the framework of orthodontic and surgical treatments. Int J Adult Orthod Ortbognath Surg. 2002 : 17 : 82-8
  9. Holdaway RA. A soft-tissue cephalometric analysis and its use in orthodontic treatment planning. Part 1. Am J Orthod 1983: 84 : 1-28 https://doi.org/10.1016/0002-9416(83)90144-6
  10. Kusnoto J, Kusnoto H. The effect of anterior tooth retraction on lip position of orthodontically treated adult Indonesians. Am J Orthod Dentofac Orthop 2001 : 120: 304-7 https://doi.org/10.1067/mod.2001.116089
  11. Waldman BH. Change in lip contour with maxillary incisor retrac-tion. Angle Orthod 1982 : 52 : 129-34
  12. Lew K Profile changes following orthodontic treatment of bima-xillary protrusion in adults with Begg appliance. Eur J Ortbod 1989: 11 : 375-81 https://doi.org/10.1093/oxfordjournals.ejo.a036009
  13. Caplan MJ, Shivapuja PK The effect of premolar extractions on the soft tissue profile in adult African American females. Angle Ortbod 1997 : 67 : 129-36