title: Cyst decreased in size post maxillary sinus floor augmentation surgery in diabetic patient: A case report.
abstract: BACKGROUND
  Whether mucosal cyst of maxillary sinus is contraindication for sinus floor augmentation surgery has been a controversial hot spot for years.
  
  
  METHODS
  This case aims to present the surgical procedure of sinus floor augmentation surgery with cyst (18.72mm×24.61mm) in diabetic patient. And 6 months later, the cyst decreased in size. The authors elevated the sinus floor and cyst simultaneously. The surgery was carried out successfully without sinus membrane perforation and the alveolar ridge gained about 8mm height. Six months later, the cyst decreased in size and osseointegration was observed.
  
  
  CONCLUSIONS
  Interdisciplinary cooperation is encouraged to diagnose benign mucosal cyst. The isolation between sinus lumen and the grafted sub-sinus space is important. Graft contamination or dispersion into the sinus lumen should be avoided. The integrity of the sinus membrane and use of antibiotics are very important to prevent the occurrence of postoperative sinus infection
  
  
  CONCLUSIONS
  The authors conclude that sinus augmentation surgery could be done with mucosal cyst in diabetic patient.
authors.affiliation: State Key Laboratory of Military Stomatology, Department of Implant Dentistry, School of Stomatology, The Fourth Military Medical University, 145 West Changle Road, Xi'an 710032, PR China.
authors.forename: Sijia
authors.initials: S
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Military Stomatology, Department of Implant Dentistry, School of Stomatology, The Fourth Military Medical University, 145 West Changle Road, Xi'an 710032, PR China. Electronic address: songyingliang111@hotmail.com.
authors.forename: Yingliang
authors.initials: Y
authors.lastname: Song
authors.affiliation: State Key Laboratory of Military Stomatology, Department of Implant Dentistry, School of Stomatology, The Fourth Military Medical University, 145 West Changle Road, Xi'an 710032, PR China.
authors.forename: Hongbo
authors.initials: H
authors.lastname: Wei
authors.affiliation: State Key Laboratory of Military Stomatology, Department of Implant Dentistry, School of Stomatology, The Fourth Military Medical University, 145 West Changle Road, Xi'an 710032, PR China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Ren
keywords: Cyst; Dental implant; Diabetes; Maxillary sinus augmentation