OBJECTIVE To assess the impact of various local pathologies on facial alveolar bone dimensions at tooth sites. MATERIALS AND METHODS Cone-beam computed tomography images of 60 patients were analyzed. Healthy teeth and teeth with local pathologies (i.e., endodontically treated, periodontally diseased teeth, and teeth with periapical lesions) were included. The thickness of the facial alveolar bone was measured at five locations: (1) the bone crest (W0), (2) 25% (W25), (3) 50% (W50), (4) 75% (W75) of the distance from the bone crest to the root apex (A), and (5) in the A region (W100). The results were considered statistically significant at p < 0.0008 (adjustment according to the statistical correction for multiple testing). RESULTS A total of 1174 teeth (707 healthy and 467 with the local pathologies) were assessed. Periodontally diseased maxillary premolars and anterior teeth in the mandible in the W0 position, as well as maxillary molars in the W25 position, tended to have a lower facial bone thickness when compared to the healthy teeth (0.68 mm vs. 0.84 mm, p = 0.008; 0.47 mm vs. 0.55 mm, p = 0.004; and 1.27 mm vs. 1.72 mm; p = 0.009, respectively). In contrast, the observed tendency pointed towards thicker facial bone wall for the periodontally diseased mandibular anterior teeth in the W50 position (0.74 vs. 0.52, p = 0.001). Healthy maxillary molars tended to display a thicker facial alveolar bone compared to the teeth with local pathologies in the W25, W50, and W75 positions (p = 0.001, p = 0.005, and p = 0.004, respectively). CONCLUSIONS The present analysis has indicated that local pathologies are commonly associated with a compromised socket morphology. CLINICAL RELEVANCE The facial bone thickness was particularly reduced at periodontally diseased teeth, which may challenge implant therapy.

中文翻译：

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具有局部病理的牙齿部位的面部牙槽​​骨的尺寸：回顾性锥束CT分析。

目的评估各种局部病理对牙齿部位面部牙槽骨尺寸的影响。材料与方法分析了60例患者的锥形束CT图像。健康的牙齿和具有局部病变的牙齿（即，经牙髓治疗，牙周病变的牙齿和根尖周病变的牙齿）也包括在内。在五个位置测量了面部牙槽骨的厚度：（1）牙顶（W0），（2）25％（W25），（3）50％（W50），（4）75％（W75）从骨顶到根尖的距离（A）和A区域中的根尖（5）（W100）。在p <0.0008时，结果被认为具有统计学意义（根据多项测试的统计校正进行调整）。结果共评估了1174颗牙齿（707颗健康牙齿和467颗局部病变）。与健康牙齿相比，在W0位置的下颌牙周病患上颌前磨牙和前牙以及在W25位置的上颌磨牙倾向于具有较低的面部骨厚度（0.68 mm vs. 0.84 mm，p = 0.008 ； 0.47毫米对0.55毫米，p = 0.004；和1.27毫米对1.72毫米； p = 0.009）。相反，观察到的趋势表明，在W50位置，牙周病的下颌前牙的面部骨壁较厚（0.74对0.52，p = 0.001）。与在W25，W50和W75位置出现局部病变的牙齿相比，健康的上颌磨牙倾向于显示较厚的面部牙槽​​骨（分别为p = 0.001，p = 0.005和p = 0.004）。结论本分析表明局部病理学通常与受损的插座形态有关。临床相关性牙周病患牙的面部骨厚特别减少，这可能会挑战植入疗法。