Abstract：Objective To provide anatomical basis for the maxillary dental implant operation of the clinical oral surgery. Methods Twenty volunteers with teeth were selected and scanned in series by spiral CT from the canthomeatal line(CML), the maxillary sinus was reconstructed by the curve-planar reconstruction(CPR) under the ADW 4.2 reconstruction software. The position and shape of maxillary sinus were observed, and the distance from the inferior wall of maxillary sinus to the dental root of maxillary posterior teeth was measured. The visual model of maxilla and maxillary sinus were reconstructed by the Amira 3D reconstruction software, the position of maxillary sinus in the semi-diaphanous maxilla and the relationship of the dental root of maxillary teeth with it were observed. Results It showed triangular or quadrilateral cone-shaped space of the maxillary sinus, the processes of bony septum were often appeared on the inferior wall of maxillary sinus. The visual model of maxillary sinus in the semi-diaphanous maxilla could clearly display its position, shape and the relationship of the dental root of maxillary teeth with it. The distance from the inferior wall of maxillary sinus to the dental root of first molar was nearer than the others, it was the first molar, second molar, third molar, second premolar and first premolar from near and far. The nearest distance from the inferior wall of maxillary sinus to the dental root of first premolar, second premolar, first molar, second molar, third molar were (9.58±1.13) mm(left) and (9.64±1.15) mm(right), (4.54±0.92) mm(left) and (4.60±0.90) mm(right), (2.13±0.50) mm(left) and (2.21±0.53) mm(right), (2.19±0.65) mm(left) and (2.27±0.65) mm(right), (3.94±1.14) mm respectively. Conclusions It has an important clinical significance for choosing appropriate length of dental implantation and avoiding dental implantation to pierce into the maxillary sinus of the three-dimensional reconstruction of maxillary sinus.
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Li Pei, Li Xiaopeng, Han Xiaohong, Fu Shengqi. Three-dimensional reconstruction of the maxillary sinus and its clinical significance. Chinese Journal of Anatomy and Clinics, 2014, 19(2): 106-109.
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2014, Vol. 19 
