3D-tracking the regenerative potential of the mandible with micro-CTs

被引：5

作者：

Beck-Broichsitter B.E. ^{[1
]}

Garling A. ^{[2
]}

Koehne T. ^{[3
]}

Barvencik F. ^{[3
]}

Smeets R. ^{[1
]}

Mehl C. ^{[2
]}

Jeschke A. ^{[3
]}

Wiltfang J. ^{[4
]}

Becker S.T. ^{[4
]}

机构：

[1] Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg–Eppendorf, Martinistraße 52, Campus Forschung, Gebäude N27, Hamburg

[2] Department of Prosthodontics, Propaedeutics and Dental Materials, Christian-Albrechts University, Arnold-Heller-Straße 3, Haus 26, Kiel, 24105, Schleswig-Holstein

[3] Department of Osteology and Biomechanics, University Medical Center Hamburg–Eppendorf, Martinistraße 52, Campus Forschung, Gebäude N27, Hamburg

[4] Department of Oral and Maxillofacial Surgery, Christian-Albrechts University, Arnold-Heller-Straße 3, Haus 26, Kiel, 24105, Schleswig-Holstein

来源：

Oral and Maxillofacial Surgery | 2015年 / 19卷 / 1期

关键词：

Atrophy alveolar ridge; Bone regeneration; Mandible; μCT;

D O I：

10.1007/s10006-014-0443-8

中图分类号：

学科分类号：

摘要：

Purpose: The treatment of large bone defects is a challenging problem especially when the mandible is affected. Bone healing is dependent on the defect size and the integrity of periosteum. So far, these both aspects have not been investigated separately. The aim of this study was to evaluate the healing potential of the mandibular bone with the help of three-dimensional micro-computed tomography (CT).; Methods: The angle of the mandible was exposed in 15 Wistar rats. A 3-mm core of bone was removed with a trephine. The local periosteum next to the defect was excised. Animals were randomized in five groups, which were ended 5, 10, 15, 28 and 56 days after operation. The mandible was excised and underwent micro-CT. For statistical evaluation, t-test statistics and regression analysis were applied.; Conclusions: This study quantified the amount of newly grown bone during osseous regeneration. We could show that the mandible itself provides regenerative capacity without any intact periosteum.; Results: Characteristics of the defects began to change on the tenth postoperative day. Fifteen days until 4 weeks after intervention new mineralization processes could be observed. New bone grew from the borders into the defect. In the 2D study, bone apposition changed significantly from the beginning to week 8 (0.08 to 0.74 mm) as well as the 3D bone gain (0.05 % to 29.67 %) in t-test statistical evaluation. For development of the bone volume inside the defect linear as well as exponential regression analysis revealed a statistically significant connection. © 2014, Springer-Verlag Berlin Heidelberg.

引用

页码：29 / 35

页数：6

共 25 条

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