Katırcıoğlu Serra Kutlu, Temur Katibe Tuğçe
Department of Restorative Dentistry, Nigde Omer Halisdemir University Faculty of Dentistry, Nigde, Turkey.
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Nigde Omer Halisdemir University, Nigde, Turkey.
BMC Oral Health. 2025 Sep 26;25(1):1441. doi: 10.1186/s12903-025-06792-8.
It is important to recognize that overhanging restorations can have adverse effects on the alveolar bone. The objective of this study was to evaluate the alterations in the bone surrounding teeth with overhanging restorations on digital panoramic radiographs (DPRs) employing fractal analysis (FA).
A total of 800 DPRs were examined, and 123 teeth presenting with overhanging restorations were identified. The alveolar bone structure around these teeth was analysed along with unrestored areas for comparison. FA was used to evaluate of the DPRs using the box-counting method. The statistical significance level was accepted as p < 0.05.
The study revealed that fractal dimension (FD) values were significantly lower in areas with overhanging restorations compared to healthy areas (p < 0.001). The analysis revealed that teeth exhibiting signs of overhanging restorations were predominantly located in quadrant 1 (35.8%, n = 44). The analysis revealed that 74.8% of these teeth were molars (n = 92) and 25.2% were premolars (n = 31). The statistical analysis revealed that there was no statistically significant difference in the FD of premolar and molar teeth with overhanging restoration (p > 0.05).
The FD data indicate that overhanging restorations may adversely affect the trabecular structure of the alveolar bone. This finding suggests that careful attention to margin alignment during restorative procedures may be beneficial for the preservation of alveolar bone health.
认识到悬突修复体可能对牙槽骨产生不利影响很重要。本研究的目的是采用分形分析（FA）评估数字全景X线片（DPR）上有悬突修复体的牙齿周围骨组织的改变。
共检查800张DPR，识别出123颗有悬突修复体的牙齿。分析这些牙齿周围的牙槽骨结构，并与未修复区域进行比较。使用盒计数法通过FA评估DPR。统计学显著性水平设定为p < 0.05。
研究显示，与健康区域相比，有悬突修复体区域的分形维数（FD）值显著更低（p < 0.001）。分析显示，有悬突修复体迹象的牙齿主要位于象限1（35.8%，n = 44）。分析显示，这些牙齿中74.8%为磨牙（n = 92），25.2%为前磨牙（n = 31）。统计学分析显示，有悬突修复体的前磨牙和磨牙的FD无统计学显著差异（p > 0.05）。
FD数据表明悬突修复体可能对牙槽骨的小梁结构产生不利影响。这一发现表明，在修复过程中仔细关注边缘对齐可能有利于保持牙槽骨健康。
