JOURNAL ARTICLE

[Evaluating the bony canal structure of the posterior superior alveolar artery using cone-beam computed tomography]

Duan Zhitian, Ye Ping, Wu Runfa, Bai Peng, Rui Rui, Huang Min, Xie Chen
Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology 2014, 32 (6): 581-3
25665425

OBJECTIVE: This study aims to examine the prevalence and diameter of the bony canal structure of the posterior superior alveolar artery (PSAA), residual alveolar bone height, and distance of its inferior border from the alveolar crest using cone-beam computed tomography (CBCT).

METHODS: CBCT images of maxilla in 116 patients were randomly selected from patients who underwent maxillary sinus augmentation procedure and/or posterior teeth implant therapy from April 2011 to September 2012. The lower border of the bony canal to the alveolar crest, diameter of the bony canal, and residual alveolar bone height below the sinus floor to the ridge crest were measured from CBCT scans. Data were presented using descriptive statistics.

RESULTS: The prevalence of the bony canal was 75.14% (133/177). The mean diameter of the bony canal was (0.96 ± 0.29) mm. The residual alveolar bone height was (7.14 ± 3.64) mm. The distance of the bony canal's inferior border from the alveolar crest was (17.92 ± 5.68) mm. No statistically significant differences between the right and left sides were observed (F = 0.295, P > 0.05). The mean diameter of the bony canal was significantly smaller in females than that in males (F = 0.187, P < 0.05). The maxillary alveolar dimension was significantly correlated with the residual alveolar bone height.

CONCLUSION: The results from this study suggest that CBCT is a valuable tool in evaluating the presence of the bony canal of the PSAAs efore maxillary sinus surgery.

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