title: [The changes of maxillary sinus membrane thickeness after maxillary sinus floor elevation surgery].
abstract: OBJECTIVE
  To evaluate the success rate of dental implants and the changes of sinus membrane thickness after sinus lift in cases of thickened sinus membrane.
  
  
  METHODS
  Sixteen patients without maxillary sinusitis and with 5-8 mm residual alveolar bone heights were included in this study. The sinus membrane thickeness of these patients were more than 2 mm. All patients received sinus lift surgery and dental implants insertion. The changes of sinus membrane was evaluated by cone-beam CT (CBCT) pre-surgery and 6 months after sinus lift surgery, and the short term success rate of dental implants was also evaluated.
  
  
  RESULTS
  A total of 18 implants from 16 subjects were inserted. The thickness of membrane was decreased in 14 cases after sinus lift and increased in 2 cases. All the orifice of maxillary sinus was unobstructed before surgery, one case was obstructed after surgery without inflammation. All the dental implants succeeded.
  
  
  CONCLUSIONS
  Sinus augmentation with thickened sinus membrane is not contraindication of sinus lift.
authors.affiliation: Implant Center, Yantai Stomatological Hospital Affiliated to Binzhou Medical College, Yantai Shandong 264008, China.
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Fan
authors.affiliation: Implant Center, Yantai Stomatological Hospital Affiliated to Binzhou Medical College, Yantai Shandong 264008, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Chen
authors.affiliation: Implant Center, Yantai Stomatological Hospital Affiliated to Binzhou Medical College, Yantai Shandong 264008, China.
authors.forename: Sheng
authors.initials: S
authors.lastname: Xu
authors.affiliation: Implant Center, Yantai Stomatological Hospital Affiliated to Binzhou Medical College, Yantai Shandong 264008, China.
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Han
authors.affiliation: Implant Center, Yantai Stomatological Hospital Affiliated to Binzhou Medical College, Yantai Shandong 264008, China; Email: dentlzh@163.com.
authors.forename: Zhonghao
authors.initials: Z
authors.lastname: Liu
mesh_terms: D054893:Cone-Beam Computed Tomography; D000075202:Contraindications; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D006801:Humans; D008437:Maxilla; D008443:Maxillary Sinus / Q000473:pathology / Q000601:surgery*; D015523:Maxillary Sinusitis / Q000601:surgery*; D009092:Mucous Membrane / Q000000981:diagnostic imaging* / Q000473:pathology; D059546:Sinus Floor Augmentation
chemical_list: D015921:Dental Implants