title: Sinus Membrane Elevation by the Crestal Approach Using a Novel Drilling System.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the clinical outcomes of patients undergoing sinus membrane elevation by a minimally invasive crestal approach using a novel drilling system.
  
  
  METHODS
  From May 2008 to November 2009, 21 implants were placed in 19 patients (10 men and 9 women) ranging from 23 to 69 years of age (average of 49.5 years). Implants were placed in maxillary premolar and molar areas that demonstrated insufficient residual bone quality; maxillary sinus membrane elevation was performed using a crestal approach with the sinus crestal approach kit (Neobiotech, Seoul, Korea).
  
  
  RESULTS
  There was no sinus perforation or osseointegration failure. The implant survival rate was 100%. The postsurgical, augmented volume of the alveolar height ranged from 2 to 9.2 mm (average of 5.81 ± 2.06 mm). Six months after maxillary sinus elevation, the bone reduction volume ranged from 0.06 to 1.42 mm (average of 0.6 ± 0.38 mm). At final F/U, the amount of bone-height reduction ranged from 0.06 to 2.60 mm (average of 0.82 ± 0.63 mm).
  
  
  CONCLUSIONS
  Sinus membrane elevation by the crestal approach using special reamers is advantageous because of the noticeable reduction in the risk of perforation and the ability to perform the surgery rapidly.
authors.affiliation: *Professor, Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Sungnam, Republic of Korea; Department of Dentistry, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea. †Resident, Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Sungnam, Republic of Korea. ‡Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University, Gwangju, Republic of Korea. §Associate Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University, Gwangju, Republic of Korea.
authors.forename: Young-Kyun
authors.initials: YK
authors.lastname: Kim
authors.forename: Ji-Young
authors.initials: JY
authors.lastname: Lee
authors.forename: Jin-Woo
authors.initials: JW
authors.lastname: Park
authors.forename: Su-Gwan
authors.initials: SG
authors.lastname: Kim
authors.forename: Ji-Su
authors.initials: JS
authors.lastname: Oh
mesh_terms: D000328:Adult; D000368:Aged; D003758:Dental Implantation, Endosseous / Q000379:methods*; D003762:Dental Instruments; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000601:surgery*; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures / Q000295:instrumentation*; D061646:Operative Time; D011862:Radiography, Panoramic; D059546:Sinus Floor Augmentation / Q000379:methods*; D016896:Treatment Outcome