open access
메뉴
open access
메뉴
ISSN : 0376-4672
치과 교정 치료의 진단이나 두개 악안면 성장의 연구에 있어서 지난 수십 년 동안 우리는 2차원의(2D)측모 두부 방사선 사진이나 파노라마 방사선사진에 의존하여 왔다. 2D 측모 두부 방사선 사진은 교정 치료전후의 기록을 위해서 유용하게 사용되어 지고 있으나, Hatcher가 지적 하였듯이, 2D 측모 두부 방사선사진은 환자 머리 위치나 X-ray 기계의 정렬에 따른orientation error와 투사 거리에 따라 달리 확대가이루어지는 geometric error와 동일한 구조물을 다른 각도에서 찍혀진 방사선 사진에서 식별하는데 어려움이 있는 association error 등의 단점을 지니고있다1). 또한, 2D 측모 두부 방사선 사진은 3차원의(3D) 구조로 존재하는 두개 악안면 구조를 평가하는데 있어서도 한계가 존재해 왔다. 근래에는 다행히도cone-beam computed tomography(CBCT)의출현과 컴퓨터 software의 발달으로 교정과 의사들이 과거에 비해 보다 정확하게 3D로 두개 악안면 구조를 진단하고 연구하는 것이 가능해졌다.
The introduction of cone-beam computed tomography(CBCT) and computer software in orthodontics has allowed orthodontiststo provide more accurate diagnosis and treatment. The most common use of CBCT imaging allows orthodontists to visualize theprecise position of supernumerary or impacted teeth, especially impacted canines. In doing so, the exact angulation of impactionand proximity of adjacent roots can be evaluated by orthodontists, allowing them to choose vector forces for tooth movementwhile minimizing root resorption. Even though 2-dimensional panoramic images can be used to view the position of the impactedcanines, they have limitations because it is not possible to evaluate the impacted tooth position 3-dimensionally. An accurateknowledge of root position improves the determination of success in orthodontic treatment. Nowadays, considering the fast pace of technological development, a combination of intraoral scanning, digital setups, custommadebrackets and wires, and indirect bonding may soon become the orthodontic standard. In this paper, this will be discussedalong with the digital models.
1. Hatcher DC. Maxillofacial imaging. In: Mc Neil C, ed. Science and Practice of Occlusion. Chicago:Quintessence Publishing; 1997, pp. 349-364.
2. Smith BR, Park JH, Cederberg RA. An evaluation of cone-beam computed tomography use in postgraduate orthodontic programs in the United States and Canada. J Dent Educ 2011;75:98-106.
3. Najjar AA, Colosi D, Dauer LT, Prins R, Patchell G, Branets I, Goren AD, Faber RD. Comparison of adult and child radiation equivalent doses from 2dental cone-beam computed tomography units. Am J Orthod Dentofacial Orthop 2013;143:784-792.
4. Silva M, Wolf U, Heinicke F, Bumann A, Visser H, Hirsch E. Cone-beam computed tomography for routine orthodontic treatment planning: a radiation dose evaluation. Am J Orthod Dentofacial Orthop 2008;133:640.e1-5.
5. De Vos W, Casselman J, Swennen GRJ. Conebeam computerized tomography (CBCT) imaging of the oral and maxillofacial region: a systematic review of the literature. Int J Oral Maxillofac Surg 2009;38:609-625.
6. Bedoya MM, Park JH. A review of diagnosis and management of impacted maxillary canines. J Am Dent Assoc 2009;140:1485-1493.
7. Becker A. The Orthodontic Treatment of Impacted Teeth. 2nd ed. Abingdon, England: Informa Healthcare; 2007, pp. 1-228.
8. Peck S, Peck L, Kataja M. The palatally displaced canine as a dental anomaly of genetic origin. Angle Orthod 1994;64:249-256.
9. Baccetti T. A controlled study of associated dental anomalies. Angle Orthod 1998;68:267-274.
10. Alqerban A, Jacobs R, Souza PC, Willems G. Invitro comparison of 2 cone-beam computed tomography systems and panoramic imaging for detecting simulated canine impaction-induced external root resorption in maxillary lateral incisors. Am J Orthod Dentofacial Orthop 2009;136:764.e1-11.
11. Wriedt S, Jaklin J, Al-Nawas B, Wehrbein H. Impacted upper canines: examination and treatment proposal based on 3D versus 2D diagnosis. J Orofac Orthop 2011;73:28-40.
12. Ericson S, Kurol J. Early treatment of palatally erupting maxillary canines by extraction of the primary canines. Eur J Orthod 1988;10:283-295.
13. Lindauer SJ, Rubenstein LK, Hang WM, Andersen WC, Isaacson RJ. J Am Dent Assoc 1992;123:91-97.
14. Olive RJ. Factors influencing the non-surgical eruption for palatally impacted canines. Aust Orthod J 2005;21:95-101.
15. Ericson S, Kurol J. Resorption of maxillary lateral incisors caused by ectopic eruption of the canines. Am J Orthod Dentofacial Orthop 1988;94:503-513.
16. Jung YH, Liang H, Benson BW, Flint D, Cho BH. The assessment of impacted maxillary canine position with panoramic radiography and cone beam computed tomography. Dentomaxillofac Radiol 2011;000:1-5.
17. Shastry S, Park JH. Evaluation of the use of digital study models in postgraduate orthodontic programs in the United States and Canada. Angle Orthod, in press.
18. Creekmore TD, Kunik RL. Straight wire: the next generation. Am J Orthod Dentofacial Orthop 1993;104:8-20.
19. Kravitz ND, Kusnoto B, BeGole E, Obrez A, Agran B. How well does Invisalign work? A prospective clinical study evaluating the efficacy of tooth movement with Invisalign. Am J Orthod Dentofacial Orthop 2009;135:27-35.
20. Grauer D, Wiechmann D, Heymann GC. Computer-aided design/computer-aided manufacturing technology in customized orthodontic appliances. J Esthet Restor Dent 2012;24:3-9.