title: Volumetric changes of grafted volumes and the Schneiderian membrane after transcrestal and lateral sinus floor elevation procedures: A clinical, pilot study.
abstract: OBJECTIVE
  To investigate the influence of various surgical techniques for sinus augmentation on the volumetric changes of graft, membrane and the post-operative discomfort.
  
  
  METHODS
  Eighteen patients in need of bilateral sinus floor elevation (SFE) were assigned to lateral SFE, transcrestal SFE and intralift procedures. CBCT images taken at baseline, 1 week and 6 weeks were analysed for volumetric changes in graft and Schneiderian membrane. Questionnaires were used to analyse post-op discomfort.
  
  
  RESULTS
  The overall average graft volume obtained after 1 week was 1.87 cm3(range 0.12-4.72 cm3). Volumes decreased after 6 weeks to an overall mean volume of 1.33 cm3(range 0.10-4.29 cm3- average decrease of 27.6%). After 6 weeks, the amount of graft volume decreased in every treatment option, ranging from -23.13% for the tSFE, over -24.55% for the lSFE, to -33.71% for the IL. Although all treatment options correspond in an increase in Schneiderian membrane volume, no statistically significant correlation between this increase and loss of graft volume could be obtained for all treatments (p = 0.97).
  
  
  CONCLUSIONS
  All SFE techniques provided sufficient graft volume for implant treatment. All techniques provoke a partially transient swelling of the Schneiderian membrane. All techniques resulted in a decrease in graft volume after 6 weeks; however, no significant differences were obtained between treatments. Furthermore, no statistical significant correlation between the post-operative swelling of the Schneiderian membrane and reduction in graft volume at 6 weeks could be obtained.
authors.affiliation: Section of Periodontology, Department of Oral Health Sciences, KU Leuven & Dentistry, University Hospitals, Leuven, Belgium.
authors.forename: Andy
authors.identifier: http://orcid.org/0000-0003-1513-2236
authors.initials: A
authors.lastname: Temmerman
authors.affiliation: Department of Maxillofacial Surgery, OMFS-Impath Research Group, Leuven, Belgium.
authors.forename: Jeroen
authors.initials: J
authors.lastname: Van Dessel
authors.affiliation: Section of Periodontology, Department of Oral Health Sciences, KU Leuven & Dentistry, University Hospitals, Leuven, Belgium.
authors.forename: Simone
authors.initials: S
authors.lastname: Cortellini
authors.affiliation: Department of Maxillofacial Surgery, OMFS-Impath Research Group, Leuven, Belgium.
authors.forename: Reinhilde
authors.initials: R
authors.lastname: Jacobs
authors.affiliation: Section of Periodontology, Department of Oral Health Sciences, KU Leuven & Dentistry, University Hospitals, Leuven, Belgium.
authors.forename: Wim
authors.initials: W
authors.lastname: Teughels
authors.affiliation: Section of Periodontology, Department of Oral Health Sciences, KU Leuven & Dentistry, University Hospitals, Leuven, Belgium.
authors.forename: Marc
authors.initials: M
authors.lastname: Quirynen
mesh_terms: D000328:Adult; D000368:Aged; D015519:Bone Density; D054893:Cone-Beam Computed Tomography; D003758:Dental Implantation, Endosseous / Q000379:methods; D015921:Dental Implants; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla / Q000000981:diagnostic imaging / Q000601:surgery; D008443:Maxillary Sinus / Q000000981:diagnostic imaging / Q000601:surgery*; D008875:Middle Aged; D009297:Nasal Mucosa / Q000000981:diagnostic imaging / Q000473:pathology* / Q000503:physiopathology; D010147:Pain Measurement; D010865:Pilot Projects; D011183:Postoperative Complications; D011857:Radiographic Image Interpretation, Computer-Assisted; D059546:Sinus Floor Augmentation / Q000379:methods*; D011795:Surveys and Questionnaires; D014945:Wound Healing
chemical_list: D015921:Dental Implants
keywords: Schneiderian membrane; bone volume; dental implants; sinus floor elevation; sinuslift