title: Does the time of osseointegration in the maxilla and mandible differ?
abstract: OBJECTIVE
  The objectives of the present study were to measure the implant stability quotient (ISQ) values at 3 different time points after the surgical insertion and to determine whether the time of osseointegration differs in the maxilla and mandible.
  
  
  METHODS
  To measure implant stability, resonance frequency analysis (RFA) was performed in 44 patients (40 women, 4 men) with a total of 100 Implacil De Bortoli implants; the patients were divided into 2 groups: group 1, implants in the maxilla (22 in the anterior maxilla and 37 in the posterior maxilla); and group 2, implants in the mandible (41 posterior mandibles). Using RFA, implant stability was measured immediately after implant placement to assess the immediate stability (time 1) and at 90 (time 2) and 150 (time 3) days.
  
  
  RESULTS
  Overall, the mean (SD) ISQ was 63.3 (6.63) (95% confidence interval [CI], 39-79) for time 1, 70.5 (6.32) (95% CI, 46-88) for time 2, and 73.5 (6.03) (95% CI, 58-88) for time 3. In group 1, the mean (SD) ISQ was 61.8 (6.56) (95% CI, 39-79) for time 1, 68.8 (5.19) (95% CI, 57-83) for time 2, and 72.3 (5.91) (95% CI, 58-85) for time 3. In group 2, the mean (SD) ISQ was 65.5 (6.13) (95% CI, 44-75) for time 1, 72.9 (7.02) (95% CI, 46-88) for time 2, and 75.3 (5.80) (95% CI, 60-88) for time 3.
  
  
  CONCLUSIONS
  The stability of the implants placed in the maxilla and mandible showed a similar evolution in the ISQ values and, consequently, on osseointegration; however, the implants in the mandible presented superior values at all time points.
authors.forename: Sergio Alexandre
authors.initials: SA
authors.lastname: Gehrke
authors.forename: Ulisses
authors.initials: U
authors.lastname: Tavares da Silva Neto
mesh_terms: D000328:Adult; D000368:Aged; D000540:Alveolar Ridge Augmentation / Q000379:methods; D003758:Dental Implantation, Endosseous / Q000379:methods; D015921:Dental Implants; D017267:Dental Prosthesis Design; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008334:Mandible / Q000502:physiology* / Q000601:surgery; D008437:Maxilla / Q000502:physiology* / Q000601:surgery; D008875:Middle Aged; D016348:Osseointegration / Q000502:physiology*; D013499:Surface Properties; D013524:Surgical Flaps / Q000601:surgery; D015996:Survival Rate; D020390:Tooth Socket / Q000601:surgery; D014732:Vibration
chemical_list: D015921:Dental Implants