Preliminary Study on Changes of Fractal Dimension of Bone Trabeculae During Implant Bone Healing Period

doi:10.13701/j.cnki.kqyxyj.2022.04.009

Abstract

Abstract: Objective: To evaluate the effectiveness of fractal analysis in determining the growth of bone trabeculae during dental implant bone healing period and predicting osseointegration. Methods: The periapical films of patients after implant surgery (T0) and three months after implant surgery (T1) in the Affiliated Stomatological Hospital of Southwest Medical University were included for fractal analysis. The images from mesial and distal regions of the implant were cut on the periapical films as the region of interest (ROI), and then the images were blurred, subtracted, standardized, binarized, and skeletonized. The fractal index in ROI was obtained by box counting method. Results: A total of 16 implants of 14 patients were included in this study. There was no significant difference in gender and age composition ratio. From T0 to T1, the fractal dimension indexes of mesial, distal, and whole ROIs increased, and the difference was statistically significant. In the process of bone healing, the increase of FD in the area around the implant was not affected by implant systems, genders, and other factors. Fractal analysis could be used as a tool to evaluate the growth of bone trabeculae. Conclusion: Fractal dimension analysis is a promising non-invasive and economical method to describe the growth of bone trabeculae and predict the osseointegration of dental implants. The existing evidence shows that the increase of trabecular bone during the healing period of implant bone is related to the increase of fractal dimension index. The sensitivity and specificity of fractal analysis need to be further analyzed.

Key words: fractal dimension, osseointegration, bone trabeculae, implant

WEN Cai, ZHOU Huangjun, YE Sixian, FENG Hao. Preliminary Study on Changes of Fractal Dimension of Bone Trabeculae During Implant Bone Healing Period[J]. Journal of Oral Science Research, 2022, 38(4): 335-339.

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