JOURNAL OF SHANDONG UNIVERSITY (HEALTH SCIENCES) ›› 2016, Vol. 54 ›› Issue (5): 92-96.doi: 10.6040/j.issn.1671-7554.0.2015.718

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Cone-beam CT evaluation on the anatomy of the maxillary sinus lateral wall alveolar canal

ZHANG Bing1,2, JIA Linglu1,2, JIA Tingting1,2, ZHANG Yunpeng1,2, WEN Yong1,2, XU Xin1,2   

  1. 1. Dental Implant Center, School of Stomatology, Shandong University;
    2. Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Jinan 250012, Shandong, China
  • Received:2015-07-31 Online:2016-05-16 Published:2016-05-16

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Abstract: Objective To investigate the anatomic characteristics of the maxillary sinus lateral wall alveolar canal with cone-beam CT(CBCT)imaging data and to provide reference for clinical practice. Methods A total of 150 cases which met the inclusion criteria were collected from the CBCT database of Stomatology Hospital of Shandong University. The GALAXIS software was used to observe and analyze the lateral wall alveolar canal of the maxillary sinus, shape of the canal, incidence of intraosseous anastomosis, detection rate in each location, diameter of the canal as well as the distance from the lower border to the alveolar crest. Results The alveolar canal was like a downward fold line, with the incidence of intraosseous anastomosis being 84.33%. Incidence of the front point of the alveolar canal was 95%, with an average diameter of(1.05±0.36)mm and(28.04±2.44)mm to the alveolar crest. The figure for rear point was 93.33%, with an average diameter of(0.89±0.29)mm and(18.86±2.78)mm to the alveolar crest. The difference in the diameters of two points was statistically significant(P<0.05). The incidence of the alveolar canal in the middle region of the maxillary sinus lateral wall was 63.00%, and only 1.08% of the alveolar canal had the diameter >2 mm. Conclusion The alveolar canal exists in the maxillary sinus lateral wall and it is difficult to detect the canal due to the small diameter and uncertain location. Bleeding and other complications may occur when it is damaged in surgical procedures. It can be observed effectively by the use of CBCT.

Key words: Cone-beam CT, Maxillary sinus lateral wall, Later wall window technique, Posterior superior alveolar artery

CLC Number: 

  • R782
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