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Doppler ultrasound를 이용한 교정적 치아 이동 시 치수 혈류량의 변화의 측정- 예비실험

Changes in pulpal blood flow during orthodontic tooth movement studied by Doppler ultrasound

  • 임경섭 (연세대학교 치과대학 교정학교실) ;
  • 배영민 (한국전기연구원) ;
  • 차정열 (연세대학교 치과대학 교정학교실) ;
  • 유형석 (연세대학교 치과대학 교정학교실) ;
  • 황충주 (연세대학교 치과대학 교정학교실)
  • Lim, Kyoung-Sub (Department of Orthodontics, School of Dentistry, Yonsei University) ;
  • Bae, Young-Min (Korea Electrotechnology Research Institute) ;
  • Cha, Jung-Yul (Department of Orthodontics, School of Dentistry, Yonsei University) ;
  • Yu, Hyung-Seog (Department of Orthodontics, School of Dentistry, Yonsei University) ;
  • Hwang, Chung-Ju (Department of Orthodontics, School of Dentistry, Yonsei University)
  • 투고 : 2008.07.31
  • 심사 : 2009.10.20
  • 발행 : 2009.12.30

초록

교정적 치아 이동 시 지속되는 압력에 의해 혈류변화가 발생하게 되며, 이러한 변화양상에 있어서 선학들의 연구 방법 및 그 결과의 다양성이 존재하였다. 본 연구에서는 Doppler ultrasound를 이용하여, 교정치료 전과 교정치료 시작 3주, 6주 후 치수 혈류량의 연속적인 변화를 알아보고자 하였다. 만 15세 이상 환자 18명을 연구대상으로 Doppler ultrasound를 이용하여 상, 하악 6전치 중 경도의 총생(2 mm 미만)을 보이는 치아(총생측정: required space-available space)와 인접치아를 포함한 3개의 치아를 대상으로 치수 혈류량의 변화를 알아보았다. 연구결과 부위별(상, 하악), 치아별, 기간에 따른 치수 혈류량의 변화는 교정 치료 시작 전과 시작 후 3주, 6주 혈류량에 유의한 차이가 없었다. 또한 치수 생활력 상실의 내재적 위험성을 비교하고자 교정 치료 시작 전 치아별로 치수혈류량을 비교하였을 때, 상악에서는 측절치, 하악에서는 견치에서 통계학적으로 유의한 차이는 나타나지 않았지만, 모든 항목에서 적은 값을 나타냈다 (p > 0.05). 본 연구의 결과는 이후에 진행될 Doppler ultrasound의 치아이동유형, 환자의 연령을 고려한 세부적인 실험 시 방법론적인 기초 자료로서 뿐만 아니라, 교정치료 시 치수 생활력의 상실에 대한 참고 자료가 될 수 있을 것이다.

Objective: This study was to change of pulp blood flow among maxillary and mandibular anterior tooth with mild crowding and adjacent teeth using Ultrasound Doppler graphy. Methods: The change of pulp blood flow was measured three times using Ultrasound Doppler graphy; before the attachment of brackets, after 3 week, and after 6 week. The sample consists of 15 year old eighteen patients. Results: Before the attachment of brackets, after 3 weeks, and after 6 weeks, there were no significant differences in the change of pulp blood flow in each part (maxilla and mandible) and each tooth according to period. In addition, to compare internal dangerousness of loss of the pulp vitality, when pulp blood flow is compared in each tooth before orthodontic treatment, there were no statistically significant differences in maxillary lateral incisor and mandibular canine but it showed low values in all measurement items (p > 0.05). Conclusions: Results of this study can be not only methodological preliminary data in further study such as tooth movement type of Ultrasound Doppler graphy and particular study considered the patient age, but also reference materials for the loss of pulp vitality in orthodontic treatment.

키워드

참고문헌

  1. Min JH, Cho JH, Lee KH, Hwang HS. The effects of ipriflavone on the periodontal reorganization following experimental tooth movement in the rat. Korean J Orthod 2008;38:347-57 https://doi.org/10.4041/kjod.2008.38.5.347
  2. Proffit WR. Contemporary orthodontic 4th ed. St Louis:Mosby;2008. p. 335-51
  3. Anstendig HS, Kronman JH. A histologic study of pulpal reaction to orthodontic tooth movement in dogs. Angle Orthod 1972;42:50-5
  4. Hamersky PA, Weimer AD, Tanitor JF. The effect of orthodontic force application on the pulpal tissue respiration rate in the human premolar. Am J Orthod 1980;77:368-78 https://doi.org/10.1016/0002-9416(80)90103-7
  5. Kvinnsland S, Heyeraas K, Ofjord ES. Effect of experimental tooth movement on periodontal and pulpal blood flow. Eur J Orthod 1989;11:200-5 https://doi.org/10.1093/oxfordjournals.ejo.a035986
  6. Sano Y, Ikawa M, Sugawara J, Horiuchi H, Mitani H. The effect of continuous intrusive force on human pulpal blood flow. Eur J Orthod 2002;24:159-66 https://doi.org/10.1093/ejo/24.2.159
  7. Guevara MJ, McClugage SG. Effect of intrusive forces upon the microvasculature of the dental pulp. Angle Ortho 1980;50:129-34
  8. Nixon CE, Saviano JA, King GJ, Keeling SD. Histomorphometric study of dental pulp during orthodontic tooth movement. J Endod 1993;19:13-6 https://doi.org/10.1016/S0099-2399(06)81034-4
  9. Derringer KA, Jaggers DC, Linden RW. Angiogenesis in Human dental pulp following orthodontic tooth movement. J Dent Res 1996;75:1761-6 https://doi.org/10.1177/00220345960750100901
  10. Roebuck EM, Evans DJ, Stirrups D, Strang R. The effect of wavelength, bandwidth, and probe design and position on assessing the vitality of anterior teeth with laser Doppler flowmetry. Int J Paediatr Dent 2000;10:213-20 https://doi.org/10.1046/j.1365-263x.2000.00194.x
  11. Ng SY, Payne PA, Cartledge NA, Ferguson MW. Determination of ultrasonic velocity in human enamel and dentine. Archs oral biol 1989;5:341-5 https://doi.org/10.1016/0003-9969(89)90107-6
  12. Ikawa M, Komatsu H, Ikawa K, Mayanagi H, Shimauchi H. Age-related changes in the human pulpal blood flow measured by laser Doppler flowmetry. Dental Traumatol 2003;19:36-40 https://doi.org/10.1034/j.1600-9657.2003.00120.x
  13. Harada K, Sato M, Omura K. Blood-flow change and recovery of sensibility in the maxillary dental pulp during and after maxillary distraction: a pilot study. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2004;98:528-32 https://doi.org/10.1016/j.tripleo.2004.02.079
  14. Unsterseher RE, Nieberg LG, Weimer AD, Dyer JK. The response of human pulpal tissue after orthodontic force application. Am J Orthod Dentofacial Orthop 1987;92:220-4 https://doi.org/10.1016/0889-5406(87)90415-X
  15. McDonald F, Pitt Ford TR. Blood flow changes in permanent maxillary canines during retraction. Eur J Orthod 1994; 16:1-9 https://doi.org/10.1093/ejo/16.1.1
  16. Seltzer S, Bender IB. The dental pulp: biologic considerations in dental procedures. 3rd ed. Philadelphia: Lippincott; 1984. p.324-48
  17. Rotstein I, Engel G. Conservative management of a combined endodontic-orthodontic lesion. Endod Dent Traumatol 1991;7:266-9 https://doi.org/10.1111/j.1600-9657.1991.tb00215.x