Retrospective chart analysis on survival rate of fixtures installed at the tuberosity bone for cases with > 논문자료

Purpose :
 To  evaluate  the  survival  rate  of  implants  placed  in  the  maxillary  tuberosity  region  using  the fixed  prosthesis  in  partially  edentulous  cases.

Materials and Methods:
 Of implant-treated patients who visited Kyung Pook National University Hospital, 7 partially edentulous patients (2 male and 5 female; mean age, 52.3 years; range, approximately 43 to 65) were selected according to the following criteria: 1) less than 3-mm thickness alveolar bone reaming at the first molar area and 2) 1 to 2 fixture premolars, with the additional implant at the maxillary tuberosity region. For the control group, patients who had nontuberosity areas were selected. After 1 to 7 years, marginal bone level, fixture mobility, and radiolucency of tuberosity fixtures of the fixed prostheses were evaluated by digital panorama (Starpacs, Infinitt, Seoul, Korea).

Results:
 None of the fixtures of the tuberosity-installed implants for 1 to 7 years failed. The marginal bone level around the implants of the maxillary tuberosity 1 to 6 years (average 3.4 years) after the final prostheses was approximately 0.6 to 1.3 mm, with an average of 0.94 mm.

Conclusion:
 The  fixture  installation  at  the  maxillary  tuberosity  using  the  unilateral  partially  edentulous implant-fixed  prosthesis  would  be  a  clinically  acceptable  treatment  module.