Comparison of clinical and histological characteristics of orthodontic tooth movement into recent and healed extraction sites combined with corticotomy in rats
2
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Objective: This study was performed to investigate the rate of tooth movement and histological characteristics of extraction sockets those were subjected to corticotomy. Methods: A split-mouth randomized controlled trial experiment was designed. Thirty-two adult, male Wistar rats were divided into 2 groups: healing extraction socket (H) and recent extraction socket (R); these groups were randomly classified into 4 subgroups (0/7/21/60 days). The first maxillary molar was extracted on 1 side and 2 months were allowed for complete bone healing; then, the corresponding molar was extracted on the other side and surgical intervention was performed at the mid-alveolar point of the first maxillary molar. Ten grams of continuous force was applied. The outcomes measured were rate of tooth movement, percentage of periodontal space and histological evaluation. The rate of tooth movement was calculated as the measured distance divided by the duration of molar movement. Histomorphometric evaluations were performed on the second and third maxillary molars. The Wilcoxon signed rank test was used to compare differences between the two groups. Results: There were no significant differences in the rates of tooth movement between H and R groups at any of the 4 time points. The histological appearance and percentage of periodontal space between the R and H groups also demonstrated no significant differences. Conclusions: The rates of orthodontic tooth movement into recent and healed socket sites did not differ between the groups. Histological analysis of tooth movement revealed regional acceleration during every time period.
Abstract
Objective: This study was performed to investigate the rate of tooth movement and histological characteristics of extraction sockets those were subjected to corticotomy. Methods: A split-mouth randomized controlled trial experiment was designed. Thirty-two adult, male Wistar rats were divided into 2 groups: healing extraction socket (H) and recent extraction socket (R); these groups were randomly classified into 4 subgroups (0/7/21/60 days). The first maxillary molar was extracted on 1 side and 2 months were allowed for complete bone healing; then, the corresponding molar was extracted on the other side and surgical intervention was performed at the mid-alveolar point of the first maxillary molar. Ten grams of continuous force was applied. The outcomes measured were rate of tooth movement, percentage of periodontal space and histological evaluation. The rate of tooth movement was calculated as the measured distance divided by the duration of molar movement. Histomorphometric evaluations were performed on the second and third maxillary molars. The Wilcoxon signed rank test was used to compare differences between the two groups. Results: There were no significant differences in the rates of tooth movement between H and R groups at any of the 4 time points. The histological appearance and percentage of periodontal space between the R and H groups also demonstrated no significant differences. Conclusions: The rates of orthodontic tooth movement into recent and healed socket sites did not differ between the groups. Histological analysis of tooth movement revealed regional acceleration during every time period.
참고문헌 (17)
- Kole H, "Surgical operations on the alveolar ridge to correct occlusal abnormalities", Oral Surg Oral Med Oral Pathol, 12, pp.515~529 (1959)
- Frost HM, "The biology of fracture healing. An overview for clinicians. Part II", Clin Orthop Relat Res, (248), pp.294~309 (1989)
- Frost HM, "The biology of fracture healing. An overview for clinicians. Part I", Clin Orthop Relat Res, (248), pp.283~293 (1989)
- Yaffe A, "Regional accelerated phenomenon in the mandible following mucoperi osteal flap surgery", J Periodontol, 65, pp.79~83 (1994)
- Sebaoun JD, "Modeling of trabecular bone and lamina dura following selective alveolar decortication in rats", J Periodontol, 79, pp.1679~1688 (2008)
- Wang L, "Tisssue responses in corticotomy- and osteotomy-assisted tooth movements in rats: histology and immunostaining", Am J Orthod Dentofacial Orthop, 136, pp.770.e1~770.e11 (2009)
- Mostafa YA, "Comparison of corticotomyfacilitated vs standard tooth-movement techniques in dogs with miniscrews as anchor units", Am J Orthod Dentofacial Orthop, 136, pp.570~577 (2009)
- Iino S, "Acceleration of orthodontic tooth movement by alveolar corticotomy in the dog", Am J Orthod Dentofacial Orthop, 131, pp.e1~e8 (2007)
- Liou EJ, "Rapid canine retraction through distraction of the periodontal ligament", Am J Orthod Dentofacial Orthop, 114, pp.372~382 (1998)
- Häsler R, "A clinical comparison of the rate of maxillary canine retraction into healed and recent extraction sites--a pilot study", Eur J Orthod, 19, pp.711~719 (1997)
- Diedrich P, "Orthodontic retraction into recent and healed extraction sites. A histologic study", J Orofac Orthop, 58, pp.90~99 (1997)
- Murphey WH Jr, "Oxytetracycline microfluorescent comparison of orthodontic retraction into recent and healed extraction sites", Am J Orthod, 58, pp.215~239 (1970)
- Hsieh YD, "Early alveolar ridge osteogenesis following tooth extraction in the rat", Arch Oral Biol, 39, pp.425~428 (1994)
- Astrand P, "Changes in the alveolar process after extractions in the white rat. A histologic and fluorescence microscopic study", Acta Odontol Scand, 27, pp.113~127 (1969)
- Kim SJ, "Effects of corticision on paradental remodeling in orthodontic treatment", Angle Orthod, 79, pp.284~291 (2009)
- Reitan K, "Comparative behavior of human and animal tissue during experimental tooth movement", Angle Orthod, 41, pp.1~14 (1971)
- Rygh P, "Hyalinization of the periodontal ligament incident to orthodontic tooth movement", Nor Tannlaegeforen Tid, 84, pp.352~357 (1974)