title: A prospective follow-up study of 44 mandibular immediately loaded implants using resonance frequency analysis: preliminary 1-year results.
abstract: OBJECTIVE
  This clinical study aimed to evaluate initial, 4-months, and 1-year stability of immediately loaded dental implants inserted according to a protocol of lower rehabilitation with prefabricated bars.
  
  
  METHODS
  The sample was composed of 11 edentulous patients. In each patient, 4 interforaminal implants were inserted. Immediately after implant installation, resonance frequency analysis (RFA) for each fixation was registered as well as after 4 months and 1 year with the prosthetic bar removed as it is a screwed system.
  
  
  RESULTS
  The clinical implant survival rate was 100%. The RFA showed an increase in stability after 4 months from 64.09 +/- 6.48 to 64.31 +/- 4.96 and 1 year, 67.11 +/- 4.37. The analysis of variance showed a statistically significant result (P = 0.015) among implant stability quotient values for the different periods evaluated. Tukey test results showed statistically significant differences between 1-year results and the initial periods but there was no statistically significant difference between initial and 4-month results (P > 0.05).
  
  
  CONCLUSIONS
  These preliminary 1-year results indicate that immediate loading of mandibular dental implants using the studied prefabricated bars protocol is a reliable treatment as it is in accordance with the results described in the literature for other similar techniques.
authors.affiliation: Department of Orthodontics, Latin-American Institute of Dental Research and Education-ILAPEO, Curitiba, Brazil. amelo@ilapeo.com.br
authors.forename: Ana Cláudia Moreira
authors.initials: AC
authors.lastname: Melo
authors.forename: Maurício Correia
authors.initials: MC
authors.lastname: de Freitas
authors.forename: Sergio Rocha
authors.initials: SR
authors.lastname: Bernardes
authors.forename: Ivete Aparecida
authors.initials: IA
authors.lastname: de Mattias Sartori
authors.forename: Ana Paula Farnezi
authors.initials: AP
authors.lastname: Bassi
authors.forename: Geninho
authors.initials: G
authors.lastname: Thomé
mesh_terms: D000368:Aged; D000497:Alloys; D015519:Bone Density / Q000502:physiology; D003722:Dental Alloys / Q000737:chemistry; D003758:Dental Implantation, Endosseous / Q000295:instrumentation / Q000379:methods; D015921:Dental Implants; D019094:Dental Prosthesis, Implant-Supported; D003779:Denture Design; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007575:Jaw, Edentulous / Q000534:rehabilitation / Q000601:surgery; D008297:Male; D008334:Mandible / Q000601:surgery*; D008875:Middle Aged; D016348:Osseointegration / Q000502:physiology*; D011446:Prospective Studies; D016019:Survival Analysis; D014025:Titanium / Q000737:chemistry
chemical_list: D000497:Alloys; D003722:Dental Alloys; D015921:Dental Implants; C031462:titanium alloy (TiAl6V4); D014025:Titanium