title: Comparative Study of the Early Loading of Resorbable Blasting Media and Sandblasting with Large-grit and Acid-etching Surface Implants: A Retrospective Cohort Study.
abstract: OBJECTIVE
  This study compares the prognosis (the survival rate and marginal bone loss) of resorbable blasting media (RBM) surface implants and sandblasting with large-grit and acid-etching (SLA) surface implants in the early loading.
  
  
  METHODS
  This study targeted 123 patients treated by implants installation from January 2008 to March 2010. The loading was initiated in the maxilla within three to four months and in the mandible within one to two months. The types of restoration were single crown and fixed partial prosthesis. Those functioned over one year. The implants were classified by the surface of implants as Group 1: RBM surface (GS III; OSSTEM, Busan, Korea) and, Group 2: SLA surface (Superline; Dentium, Seoul, Korea). The groups were categorized by maxilla and mandible and compared by survival rate, marginal bone loss through clinical records evaluation, and radiographic measurements.
  
  
  RESULTS
  The marginal bone loss in the maxilla was 0.14±0.34 mm (Group 1) and 0.30±0.37 mm (Group 2), a statistically significant difference (P <0.05). In the mandible those were 0.28±0.54 mm (Group 1) and 0.20±0.33 mm (Group 2), not significant (P >0.05). There was no significant difference of marginal bone loss between maxilla and mandible by groups. During observation there was no implant failure, a survival rate of 100%.
  
  
  CONCLUSIONS
  Both surfaces showed an excellent survival rate, and the marginal bone loss was not substantial.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Chosun University.
authors.forename: Sung-Beom
authors.initials: SB
authors.lastname: Kim
authors.affiliation: Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Chosun University.
authors.forename: Young-Kyun
authors.initials: YK
authors.lastname: Kim
authors.forename: Su-Gwan
authors.initials: SG
authors.lastname: Kim
authors.forename: Ji-Su
authors.initials: JS
authors.lastname: Oh
authors.forename: Byung-Hoon
authors.initials: BH
authors.lastname: Kim
keywords: Early dental implant loading; Resorbable blasting media; Sandblasting with large-grit and acid-etching