title: Comparison of implant primary stability between maxillary edentulous ridges receiving intramembranous origin block grafts.
abstract: OBJECTIVE
  The purposes of the present study were: to compare the resonance frequency analysis (RFA) values of implant placed in either ramus or calvaria block grafts; and to determine if implant diameter influences RFA implant stability quotient (ISQ) value.
  
  
  METHODS
  This was a retrospective study that included 16 consecutives healthy patients treated with autogenous onlay block grafts for horizontal bone reconstruction in maxilla. Ten ramus and ten calvaria block graft treated patients were selected and compared.
  
  
  RESULTS
  Totally, 59 implants were placed, 35 (59.3%) were placed on the calvaria bone grafts and the remaining 24 (40.7%) were on the ramus bone graft. Of all the implants studied, 13 (22%), 35 (59.3%), and 11 (18.6%) were 10 mm, 11.5 mm and 13 mm in length respectively. Regarding the diameter, 4 (7%) were 3.3 mm, 3 (5%) were 3.5 mm, 20 (34%) were 3.7 mm and 32 (54%) were 4 mm. Mean ISQ value obtained by RFA was 73.06 ± 6.08, being 72.19 ± 6 and 74.47 ± 6.06 for the calvaria and ramus treated group respectively. No significant differences were noted between the two groups (p= 0.154). Implants were pooled and divided by their diameter. Mean ISQ value obtained for 3.3 mm was 80 ± 5.09, while for 4.0 mm was 72.5 ± 7.19. Again, no significant differences were found among the groups (p= 0.138).
  
  
  CONCLUSIONS
  For RFA ISQ value, the bone graft origins (calvaria or ramus) or implant diameters did not influence the outcome.
authors: Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA. amonjec@umich.edu
authors: Alberto
authors: A
authors: Monje
authors: Florencio
authors: F
authors: Monje
authors: Fernando
authors: F
authors: Suarez
authors: Raúl
authors: R
authors: González-García
authors: Laura
authors: L
authors: Villanueva-Alcojol
authors: Agustín
authors: A
authors: Garcia-Nogales
authors: Pablo
authors: P
authors: Galindo-Moreno
authors: Hom-Lay
authors: HL
authors: Wang
mesh_terms: D000328:Adult; D016025:Bone Transplantation; D005260:Female; D006801:Humans; D007575:Jaw, Edentulous / Q000601:surgery*; D008297:Male; D008437:Maxilla; D008875:Middle Aged; D012189:Retrospective Studies; D055815:Young Adult
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