title: RCT comparing minimally with moderately rough implants. Part 1: clinical observations.
abstract: OBJECTIVE
  This 1-year prospective RCT compared the outcome of minimally (turned) and moderately rough (TiUnite) implant surfaces.
  
  
  METHODS
  Two subgroups of patients were formed; one group (n = 10) where all teeth had been extracted due to severe periodontitis, another group (n = 8) with teeth in the antagonistic jaw with a history of periodontitis and some remaining medium pockets (4-6 mm). Implants (n = 85, 43 turned & 42 TiUnite) were installed randomly in each patient. After 3-6 months of submerged healing, healing abutments were connected, followed by final abutments 2 weeks later, all with the same surface characteristics as the supporting implant. Peri-implant parameters and intra-oral radiographs were recorded up to 1 year after abutment connection.
  
  
  RESULTS
  Two turned implants failed in the partial edentulous group during the initial healing period (CSR: 95%) and none of the TiUnite (CSR: 100%) surface. No statistically significant differences in clinical parameters could be observed between both surfaces. The partial edentulous subgroup showed more bone loss compared to the full edentulous subgroup.
  
  
  CONCLUSIONS
  Moderately rough implants have a similar clinical outcome (at 1 year of loading in periodontitis susceptible patients) compared to minimally rough implants.
authors: Research Group for Microbial Adhesion Leuven, Department of Periodontology, Catholic University Leuven, Leuven, Belgium. nele_van_assche@hotmail.com
authors: N
authors: N
authors: Van Assche
authors: W
authors: W
authors: Coucke
authors: W
authors: W
authors: Teughels
authors: I
authors: I
authors: Naert
authors: M V
authors: MV
authors: Cardoso
authors: M
authors: M
authors: Quirynen
mesh_terms: D000328:Adult; D059605:Dental Implant-Abutment Design; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D019232:Dental Restoration Failure; D005260:Female; D006801:Humans; D007575:Jaw, Edentulous / Q000534:rehabilitation*; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation; D016014:Linear Models; D008297:Male; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged; D010518:Periodontitis / Q000601:surgery; D011446:Prospective Studies; D013499:Surface Properties; D014081:Tooth Extraction
chemical_list: D015921:Dental Implants