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Regen Biomater. 2015 Dec;2(4):251-60. doi: 10.1093/rb/rbv017. Epub 2015 Oct 14.

A new method to standardize CBCT for quantitative evaluation of alveolar ridge preservation in the mandible: a case report and review of the literature.

Author information

1
Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China, ; Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing, 210009, China.
2
Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China.
3
Beijing Allgens Medical Science & Technology Co., Ltd, Beijing, 100176, China.
4
Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China, ; Suzhou Key Laboratory of Biomaterials and Technologies & Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou, 215123, China.
5
Suzhou Key Laboratory of Biomaterials and Technologies & Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou, 215123, China.

Abstract

Cone-beam computerized tomography (CBCT) is an effective technique for assessment of changes to the alveolar ridge (AR). However, its accuracy and reliability could be improved by standardization of imaging positions to remain unchanged during measurements. In this study, an alveolar ridge preservation procedure was performed on a left third molar (38) socket by filling it with a radiotransparent synthetic bone graft, mineralized collagen (MC). Photographic, X-ray and CBCT images were captured before and 3, 6 and 12 months after surgery. A new method was developed to standardize CBCT for quantitative evaluation. Obtained CBCT images showed good comparability. The post-extraction alveolar width and height were both over 95% of the original values, but some resorption of the lingual bone wall (>50%) and inter-crestal bone (>30%). It is concluded that an effective positional standardization method was developed for CBCT assessment of AR dimensional changes in the posterior mandible. The use of MC in combination with a collagen membrane improved dimensional preservation of the AR.

KEYWORDS:

CBCT; alveolar ridge preservation; quantitative evaluation

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