title: The clinical significance of sinus membrane perforation during augmentation of the maxillary sinus.
abstract: OBJECTIVE
  Augmentation of the maxillary sinus floor is a well-documented technique and is generally accepted as a pure implantology procedure to facilitate placement of dental implants in the posterior atrophic maxilla. The objective of this report was to evaluate the significance of the sinus membrane perforations on the incidence, complications, and success rate of this procedure.
  
  
  METHODS
  Patients who received sinus floor augmentation and simultaneous placement of dental implant were included in this study. Subgroup I consisted of patients who had their sinus membrane perforated and repaired during the procedure with resorbable membrane. Subgroup II consisted of patients whose Schneiderian membrane was not perforated during the procedure. The patients were followed between 1 to 4 years after augmentation.
  
  
  RESULTS
  All perforations were classified as class II or III. The success rate of the implants in the perforation group was 94.4%, and that for the nonperforation group was 93.9%. The difference between the 2 study groups was statistically not significant. A significant statistical correlation was found between the residual ridge height and the membrane perforation (P < .01).
  
  
  CONCLUSIONS
  Mainly due to technical difficulties, maxillary sinus membrane perforation occurs more frequently with a small height of residual alveolar bone. In this study, no statistical difference was observed in the success rate of the immediate implants placed with sinus bone grafting in patients whose membrane was perforated versus those patients in whom an intact membrane was maintained.
authors.affiliation: Naharia, Israel. ardikian@netvision.net.il
authors.forename: Leon
authors.initials: L
authors.lastname: Ardekian
authors.forename: Efrat
authors.initials: E
authors.lastname: Oved-Peleg
authors.forename: Eli E
authors.initials: EE
authors.lastname: Mactei
authors.forename: Micha
authors.initials: M
authors.lastname: Peled
mesh_terms: D000540:Alveolar Ridge Augmentation / Q000009:adverse effects*; D003758:Dental Implantation, Endosseous / Q000009:adverse effects*; D015921:Dental Implants; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008443:Maxillary Sinus / Q000293:injuries* / Q000601:surgery; D008566:Membranes / Q000293:injuries*; D009297:Nasal Mucosa / Q000293:injuries; D012189:Retrospective Studies
chemical_list: D015921:Dental Implants