Fractal dimension, lacunarity, and bone area fraction analysis of peri-implant trabecular bone after prosthodontic loading.

IF 1.6 3区医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Oral Radiology Pub Date : 2024-11-11 DOI:10.1007/s11282-024-00784-0

Nesrin Dundar, Elif Aslan, Onur Mutlu

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Abstract

Objectives: To assess the structural alterations in peri-implant bone occurring 5 years after prosthodontic loading in panoramic radiography (PR).

Methods: PR images of 44 mandibular and 33 maxillary implants along with 42 healthy control teeth taken before and 5 years after prosthodontic loading were included. Two regions-of-interest (ROI) were selected from mesial and distal surrounding bone of each implant and tooth. Then, the selected ROIs were divided to obtain three sub-ROIs (coronal, middle, and apical) on each side. A total of eight ROIs and sub-ROIs from each implant and control tooth were used for the calculations of fractal dimension (FD), lacunarity, and bone area fraction (BA/TA). The paired-sample t test was used to compare measurements before and 5 years after loading (p = 0.05).

Results: Overall evaluation of 77 implants showed that FD decreased at the middle and apical peri-implant bone levels 5 years after loading (p < 0.05). In mandibular implants, BA/TA decreased after loading (p < 0.05). While FD decreased at the coronal level (p = 0.022), lacunarity increased at the middle level of mandibular implants (p < 0.05). In maxillary implants, FD decreased at the middle and BA/TA decreased at the coronal level (p < 0.05). On the other hand, BA/TA increased at the apical level of maxillary implants (p = 0.016) after loading. None of the parameters revealed any difference in the control group (p > 0.05).

Conclusions: FD and BA/TA can be used to analyze structural changes in peri-implant bone after prosthodontic loading. Additionally, FD, lacunarity and BA/TA may provide useful information about changes occurring at different levels of peri-implant bone.

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修复加载后种植体周围骨小梁的分形维度、裂隙度和骨面积分数分析。

目的通过全景放射摄影（PR）评估义齿加载 5 年后种植体周围骨的结构变化：方法：纳入 44 颗下颌种植体和 33 颗上颌种植体以及 42 颗健康对照牙的全景放射影像，分别拍摄于义齿加载前和义齿加载 5 年后。从每个种植体和牙齿的中轴和远轴周围骨质中选取两个感兴趣区（ROI）。然后，将选定的 ROI 划分，在每侧获得三个子 ROI（冠状、中间和根尖）。每个种植体和对照牙共有八个 ROI 和子 ROI 用于计算分形维度（FD）、裂隙度和骨面积分数（BA/TA）。使用配对样本 t 检验比较加载前和加载后 5 年的测量结果（p = 0.05）：结果：对 77 个种植体的总体评估显示，加载 5 年后，种植体中部和根尖周骨水平的 FD 有所下降（P 0.05）：结论：FD和BA/TA可用于分析义齿加载后种植体周围骨的结构变化。此外，FD、裂隙度和 BA/TA 可以提供有关种植体周围不同水平骨质变化的有用信息。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Oral Radiology DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

4.20

自引率

13.60%

发文量

审稿时长

>12 weeks

期刊介绍： As the official English-language journal of the Japanese Society for Oral and Maxillofacial Radiology and the Asian Academy of Oral and Maxillofacial Radiology, Oral Radiology is intended to be a forum for international collaboration in head and neck diagnostic imaging and all related fields. Oral Radiology features cutting-edge research papers, review articles, case reports, and technical notes from both the clinical and experimental fields. As membership in the Society is not a prerequisite, contributions are welcome from researchers and clinicians worldwide.