J Korean Assoc Oral Maxillofac Surg 2016; 42(5): 278~283
Correlations between anatomic variations of maxillary sinus ostium  and postoperative complication after sinus lifting
Jang Won Lee, Ji Yong Yoo, Seung Jae Paek, Won-Jong Park, Eun Joo Choi, Moon-Gi Choi, Kyung-Hwan Kwon
Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital,  College of Dentistry, Wonkwang University, Iksan, Korea
Kyung-Hwan Kwon
Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, 460 Iksan-daero, Iksan 54538, Korea
TEL: +82-63-859-2921   FAX: +82-63-847-4002  E-mail: denhouse@wonkwang. ac.kr
Received June 23, 2016; Revised October 4, 2016; Accepted October 4, 2016.; Published online October 31, 2016.
© Korean Association of Oral and Maxillofacial Surgeons. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
 Abstract
Abstract (J Korean Assoc Oral Maxillofac Surg 2016;42:278-283)
Objectives: The maxillary sinus mucosa is reported to recover to preoperative sterility after sinus floor elevation. However, when drainage of maxillary sinus is impaired, recovery can be delayed and maxillary sinusitis can occur. Therefore, in this study, we investigated the correlations between anatomic variants that can interrupt the ostium of the maxillary sinus and incidence of complication after sinus lifting. Materials and Methods: The subjects are 81 patients who underwent sinus lifting in Wonkwang University Dental Hospital (Iksan, Korea). Computed tomography (CT) images of the subjects were reviewed for presence of nasal septum deviation, anatomic variants of the middle turbinate, and Haller cells. Correlations between anatomic variations and occurrence of maxillary sinusitis were statistically analyzed. Results: Patients with anatomic variants of ostio-meatal units, such as deviated nasal septum, concha bullosa or paradoxical curvature of the middle turbinate, or Haller cells, showed a higher rate of complication. However, only presence of Haller cell showed statistically significant.Conclusion: Before sinus lifting, CT images are recommended to detect anatomic variants of the ostio-meatal complex. If disadvantageous anatomic variants are detected, the use of nasal decongestants should be considered to reduce the risk of postoperative sinusitis.
Keywords: Maxillary sinus, Sinus floor augmentation, Maxillary sinusitis, Anatomic variation, Ostio-meatal complex


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