title: Correlations between anatomic variations of maxillary sinus ostium and postoperative complication after sinus lifting.
abstract: OBJECTIVE
  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.
  
  
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea.
authors.forename: Jang Won
authors.identifier: 0000-0003-2809-3424
authors.initials: JW
authors.lastname: Lee
authors.affiliation: Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea.
authors.forename: Ji Yong
authors.identifier: 0000-0002-9390-1494
authors.initials: JY
authors.lastname: Yoo
authors.affiliation: Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea.
authors.forename: Seung Jae
authors.identifier: 0000-0002-5095-7543
authors.initials: SJ
authors.lastname: Paek
authors.affiliation: Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea.
authors.forename: Won-Jong
authors.identifier: 0000-0001-6687-5043
authors.initials: WJ
authors.lastname: Park
authors.affiliation: Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea.
authors.forename: Eun Joo
authors.identifier: 0000-0001-5377-8893
authors.initials: EJ
authors.lastname: Choi
authors.affiliation: Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea.
authors.forename: Moon-Gi
authors.identifier: 0000-0003-3502-7652
authors.initials: MG
authors.lastname: Choi
authors.affiliation: Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea.
authors.forename: Kyung-Hwan
authors.identifier: 0000-0002-5257-8440
authors.initials: KH
authors.lastname: Kwon
keywords: Anatomic variation; Maxillary sinus; Maxillary sinusitis; Ostio-meatal complex; Sinus floor augmentation