Dental implant complications in Edinburgh Dental Institute
Research type
Research Study
Full title
Success and Survival of Dental Implants in the older versus younger adult
IRAS ID
306636
Contact name
Chris Millen
Contact email
Sponsor organisation
UNIVERSITY OF EDINBURGH, Queens Medical Research Institute
Duration of Study in the UK
1 years, 0 months, 1 days
Research summary
Summary of Research:
This will be a retrospective study to identify the technical and biological complications of dental implants and the risk factors associated. It will be conducted in the Restorative department of the Edinburgh Dental Institute (EDI). Patient’s data collection will be done through EDI’s database which will involve dental implants complications where the implants were placed and followed up for at least 5 years.With a type I error of 5%, confidence interval of 95%, and 8% margin of error, a sample size of 150 patients will be obtained. Considering 5% loss to follow-up, a total sample size of 250 patients will be considered for the proposed study. The study sample will be derived from a group of patients who received Straumann implants that were placed between July 2017 and July 2021. Demographic and treatment data will be gathered from patients’ files. The complications of all the dental implants placed will be identified and their frequencies will be recorded. From these recorded complications, risk factors that are associated with the complications will be identified.
Data analysis consists of identifying complication frequencies and the risk factors. Then, the frequencies will be converted to percentages to identify the complications and the associated risk factors in descending order.
Summary of results:
Loss of retention was the most common complication for single implant crown (SIC), fixed partial prosthesis (FPP), and the full arch removable prosthesis. 48.8% of abutment screw loosening was reported within the cantilever group and 50% of fracture or
chipping of prosthesis was reported in full arch fixed prostheses. Kruskal Wallis test found a significant difference (P<0.001) between the "type of prosthesis" and loss of retention, as well as fracture/chipping of prosthesis. Post hoc comparison found significantly more loss of retention in full arch removable prosthesis compared to SIC (P<0.001), while full arch fixed prosthesis had significantly more fracture/chipping of prosthesis compared to SIC. 56%, 27%, and 18% of minor, medium and major complications were recorded respectively. MLR (Multiple linear regression) reported significant relationship between age, cantilever, partial removable prosthesis, full arch removable prosthesis, type of retention (removable), number of implants, operator (specialist) and technical complications.REC name
West of Scotland REC 5
REC reference
22/WS/0050
Date of REC Opinion
20 May 2022
REC opinion
Further Information Favourable Opinion