Ahn Hee-Ju, Byun Soo-Hwan, Che Sung-Ah, Park Sang-Yoon, Yi Sang-Min, Park In-Young, On Sung-Woon, Yang Byoung-Eun
Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Anyang 14068, Republic of Korea.
Department of Artificial Intelligence and Robotics in Dentistry, Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea.
Diagnostics (Basel). 2024 Aug 16;14(16):1792. doi: 10.3390/diagnostics14161792.
The rising demand for dental implants necessitates addressing anatomical challenges, particularly the shape of the mandible. Incorrectly angling implants can cause lingual perforations, risking damage to the inferior alveolar artery and nerve. This study analyzed 96 cone-beam computed tomography images from individuals aged 20 to 70 (8 males and 8 females) to evaluate mandibular anatomy in four areas: left and right sides and the first and second molars. Mandibular shapes were classified into U, C, and P types. U-shaped mandibles, with a wider crest width, pose the highest risk of lingual perforation. Measurements for U-shaped types included concavity angle, length, and depth. Statistical analyses (T-tests and ANOVA) with a 95% confidence interval showed no significant differences between the left and right sides. However, significant differences based on gender, age, and tooth type were found. The study found U-shapes in 34.6% of cases, P-shapes in 28.9%, and C-shapes in 36.5%, with U-shapes more common in second molars. Understanding these variations enhances the safety and effectiveness of implant procedures and oral surgeries.
对牙种植体需求的不断增加，使得解决解剖学挑战成为必要，尤其是下颌骨的形状。种植体角度不正确会导致舌侧穿孔，有损伤下牙槽动脉和神经的风险。本研究分析了96例年龄在20至70岁之间个体（8名男性和8名女性）的锥形束计算机断层扫描图像，以评估四个区域的下颌骨解剖结构：左右两侧以及第一和第二磨牙处。下颌骨形状分为U型、C型和P型。嵴宽度较宽的U型下颌骨发生舌侧穿孔的风险最高。U型下颌骨的测量指标包括凹陷角度、长度和深度。采用95%置信区间的统计分析（t检验和方差分析）显示，左右两侧之间无显著差异。然而，基于性别、年龄和牙齿类型发现了显著差异。研究发现，34.6%的病例为U型，28.9%为P型，36.5%为C型，U型在第二磨牙中更为常见。了解这些变异可提高种植手术和口腔外科手术的安全性和有效性。
