Lévano-Miranda Gerardo Raffael, Carranza-Samanez Kilder Maynor, Dulanto-Vargas Julissa Amparo
Department of Dentistry, School of Dentistry, Universidad Científica del Sur, Lima, Peru.
Department of Research, Research Group in Dental Sciences, School of Dentistry, Universidad Científica del Sur, Lima, Peru.
Contemp Clin Dent. 2025 Apr-Jun;16(2):117-123. doi: 10.4103/ccd.ccd_258_24. Epub 2025 Jul 14.
Knowledge of the anatomical structures related to the anterior maxilla is essential to anticipate complications in oral and maxillofacial surgery procedures. The aim of this study was to determine the anatomical characteristics of the nasopalatine canal (NPC) in adults using cone-beam computed tomography (CBCT).
This retrospective study included a sample of 195 CBCTs of Peruvian adults (56.4% women) aged 19-60 years (mean age: 43.73 ± 11.16). Sagittal NPC slices were selected for measurement by a calibrated evaluator (intraclass correlation coefficient ≥0.817) based on length (mm), inclination in degrees (°) and type (vertical <10° and inclined ≥10°), inferior diameter and shape (cylindrical, funnel, hourglass, and spindle). ANOVA, Kruskal-Wallis, Student's -test, Mann-Whitney , Spearman's correlation, and Chi-square tests were used at a significance level of < 0.05.
The NPC was characterized by a length of 10.91 ± 2.38 mm, a diameter of 3.46 ± 0.93 mm, an inclination angle of 19.17° ± 8.26° with a predominant inclination ≥10° (85.6%), and a cylindrical shape (55.4%). A larger diameter was associated with men, whereas a greater inclination was associated with women ( = 0.008 and = 0.002, respectively). No significant differences were found when NPC parameters were compared according to age or with each other ( > 0.05).
The study describes the anatomical characteristics of the NPC in a sample of Peruvian adults with anterosuperior dentition and their dimorphism by sex and age in relation to diameter and inclination.
了解与上颌前部相关的解剖结构对于预测口腔颌面外科手术中的并发症至关重要。本研究的目的是使用锥形束计算机断层扫描（CBCT）确定成人鼻腭管（NPC）的解剖特征。
这项回顾性研究纳入了195例年龄在19 - 60岁（平均年龄：43.73±11.16）的秘鲁成年人的CBCT样本（56.4%为女性）。由一名经过校准的评估人员（组内相关系数≥0.817）选择鼻腭管矢状切片进行测量，测量指标包括长度（mm）、倾斜度（度）和类型（垂直<10°和倾斜≥10°）、下直径和形状（圆柱形、漏斗形、沙漏形和纺锤形）。采用方差分析、Kruskal-Wallis检验、学生t检验、Mann-Whitney检验、Spearman相关性检验和卡方检验，显著性水平设定为<0.05。
鼻腭管的特征为长度10.91±2.38 mm，直径3.46±0.93 mm，倾斜角度19.17°±8.26°，主要倾斜度≥10°（85.6%），形状为圆柱形（55.4%）。较大的直径与男性相关，而较大的倾斜度与女性相关（分别为=0.008和=0.002）。根据年龄比较鼻腭管参数或相互比较时，未发现显著差异（>0.05）。
本研究描述了秘鲁有上前牙列的成年人群样本中鼻腭管的解剖特征，以及其在直径和倾斜度方面的性别和年龄二态性。
