title: A randomized controlled trial comparing interim acrylic prostheses with and without cast metal base for immediate loading of dental implants in the edentulous mandible.
abstract: OBJECTIVE
  This randomized controlled trial used resonance frequency analysis (RFA) to assess the effects of the presence or absence of a cast rigid bar splinting multiple implants in the stability of immediately loaded implants.
  
  
  METHODS
  Twenty-nine edentulous patients were randomly divided into two groups: G1 with full-arch implant-fixed prostheses and G2 with multiple implant splinting via acrylic resin denture bases. All implants were immediately loaded. RFA measurements assessed implant stability at three different times (T0--at baseline, T1--4 months, and T2--8 months. Wilcoxon and Friedman tests and a multivariate model with repeated measures for longitudinal data were used for statistical comparison (α = 0.05).
  
  
  RESULTS
  Twenty-nine patients were assessed (G1 = 15 and G2 = 14). Implant and prostheses survival rates were 100% for both groups after the 8-month observation period and no significant differences in the mean ISQ values were found at the different implant stability assessment times (P > 0.05).
  
  
  CONCLUSIONS
  The different splinting protocols did not appear to affect implant stability during the 8-month observation period.
authors.affiliation: Department of Implantology, Latin American Institute of Dental Research and Education, Curitiba, PR, Brazil.
authors.forename: Eloana
authors.initials: E
authors.lastname: Thomé
authors.affiliation: Department of Prosthodontics, Latin American Institute of Dental Research and Education, Curitiba, PR, Brazil.
authors.forename: Hyung Joo
authors.initials: HJ
authors.lastname: Lee
authors.affiliation: Department of Prosthodontics, Latin American Institute of Dental Research and Education, Curitiba, PR, Brazil.
authors.forename: Ivete Aparecida de Mattias
authors.initials: IA
authors.lastname: Sartori
authors.affiliation: Department of Implantology, Latin American Institute of Dental Research and Education, Curitiba, PR, Brazil.
authors.forename: Roseli Latenek
authors.initials: RL
authors.lastname: Trevisan
authors.affiliation: Department of Implantology, Latin American Institute of Dental Research and Education, Curitiba, PR, Brazil.
authors.forename: Jaques
authors.initials: J
authors.lastname: Luiz
authors.affiliation: Department of Prosthodontics (MOT), Fluminense Federal University, School of Dentistry, Niterói, RJ, Brazil.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Tiossi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003722:Dental Alloys; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D003819:Denture Bases; D003779:Denture Design; D003781:Denture Retention; D003826:Denture, Complete, Lower; D005260:Female; D006801:Humans; D057893:Immediate Dental Implant Loading; D007575:Jaw, Edentulous / Q000534:rehabilitation*; D008137:Longitudinal Studies; D008297:Male; D008334:Mandible / Q000601:surgery*; D008875:Middle Aged; D015996:Survival Rate; D016896:Treatment Outcome
chemical_list: D003722:Dental Alloys; D015921:Dental Implants
keywords: edentulous mandible; immediate dental implant loading; implant stability; implant-supported dental prosthesis; osseointegration