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
- 2014.12
- 수록면
- 66 - 79 (14page)
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Purpose: To analyze the amount and pattern of tooth movement and the changes in arch dimension of mandibular dentition after orthodontic treatment using a new three-dimensional (3D)-indirect superimposition method.
Materials and Methods: The samples consisted of fifteen adult patients with class I bialveolar protrusion and minimal anterior crowding, treated by extraction of four first premolars with conventional sliding mechanics. After superimposition of 3D-virtual maxillary models before and after treatment using best-fit method, 3D-virtual mandibular model at each stage was placed into a common coordinate of superimposition using 3D-bite information, which resulted in 3D-indirect superimposition for mandibular dentition. The changes in mandibular dental and arch dimensional variables were measured with Rapidform 2006 (INUS Technology). Paired t-test was used for statistical analysis.
Result: The anterior teeth moved backward, displaced laterally, and inclined lingually. The posterior teeth showed statistically significant contraction toward midsagittal plane. The amounts of backward movement of anterior teeth and forward movement of posterior teeth showed a ratio of 6 : 1. Although the inter-canine width increased slightly (0.8 mm, P<0.05), the inter-second premolar, inter-first molar, and inter-second molar widths decreased significantly with similar amounts (2.2 mm, P<0.05; 2.3 mm, P<0.01; 2.3 mm, P<0.001). The molar depth decreased (6.7 mm, P<0.001) but canine depth did not change.
Conclusion: A new 3D-indirect superimposition of the mandibular dentitions using best-fit method and 3D-bite information can present a guideline for virtual treatment planning in terms of tooth position and arch dimension.
Materials and Methods: The samples consisted of fifteen adult patients with class I bialveolar protrusion and minimal anterior crowding, treated by extraction of four first premolars with conventional sliding mechanics. After superimposition of 3D-virtual maxillary models before and after treatment using best-fit method, 3D-virtual mandibular model at each stage was placed into a common coordinate of superimposition using 3D-bite information, which resulted in 3D-indirect superimposition for mandibular dentition. The changes in mandibular dental and arch dimensional variables were measured with Rapidform 2006 (INUS Technology). Paired t-test was used for statistical analysis.
Result: The anterior teeth moved backward, displaced laterally, and inclined lingually. The posterior teeth showed statistically significant contraction toward midsagittal plane. The amounts of backward movement of anterior teeth and forward movement of posterior teeth showed a ratio of 6 : 1. Although the inter-canine width increased slightly (0.8 mm, P<0.05), the inter-second premolar, inter-first molar, and inter-second molar widths decreased significantly with similar amounts (2.2 mm, P<0.05; 2.3 mm, P<0.01; 2.3 mm, P<0.001). The molar depth decreased (6.7 mm, P<0.001) but canine depth did not change.
Conclusion: A new 3D-indirect superimposition of the mandibular dentitions using best-fit method and 3D-bite information can present a guideline for virtual treatment planning in terms of tooth position and arch dimension.
목차
Introduction
Materials and Methods
Result
Discussion
Conclusion
References
참고문헌 (20)
참고문헌 신청
1. [학술지(정기간행물)] - Mavropoulos A / 2005 / Efficiency of noncompliance simultaneous first and second upper molar distalization: a three-dimensional tooth movement analysis / Angle Orthod 75 : 532 ~ 539
2. [학술지(정기간행물)] - Cha BK / 2007 / Analysis of tooth movement in extraction cases using three-dimensional reverse engineering technology / Eur J Orthod 29 : 325 ~ 331
3. [학술지(정기간행물)] - Cho MY / 2010 / Threedimensional analysis of the tooth movement and arch dimension changes in Class I malocclusions treated with first premolar extractions: a guideline for virtual treatment planning / Am J Orthod Dentofacial Orthop 138 : 747 ~ 757
4. [학술지(정기간행물)] - Hayashi K / 2002 / A novel method for the three-dimensional (3-D) analysis of orthodontic tooth movementcalculation of rotation about and translation along the finite helical axis / J Biomech 35 : 45 ~ 51
5. [학술지(정기간행물)] - Kondo T / 2004 / Tooth segmentation of dental study models using range images / IEEE Trans Med Imaging 23 : 350 ~ 362
2. [학술지(정기간행물)] - Cha BK / 2007 / Analysis of tooth movement in extraction cases using three-dimensional reverse engineering technology / Eur J Orthod 29 : 325 ~ 331
3. [학술지(정기간행물)] - Cho MY / 2010 / Threedimensional analysis of the tooth movement and arch dimension changes in Class I malocclusions treated with first premolar extractions: a guideline for virtual treatment planning / Am J Orthod Dentofacial Orthop 138 : 747 ~ 757
4. [학술지(정기간행물)] - Hayashi K / 2002 / A novel method for the three-dimensional (3-D) analysis of orthodontic tooth movementcalculation of rotation about and translation along the finite helical axis / J Biomech 35 : 45 ~ 51
5. [학술지(정기간행물)] - Kondo T / 2004 / Tooth segmentation of dental study models using range images / IEEE Trans Med Imaging 23 : 350 ~ 362
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UCI(KEPA) : I410-ECN-0101-2016-515-001061995