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Success Rate of Immediately Loaded Orthodontic Temporary Anchorage Devices: A Retrospective Analysis of Patient- and
Krisztina Martha1, Silvia Izabella Pop1, Lenard Farczadi2
1Faculty of Dental Medicine, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania.
Background:
Temporary anchorage devices (TADs) are considered an essential and reliable component of orthodontic fixed appliance therapy, providing stable skeletal anchorage with minimal dependence on patient compliance.
Objective:
This study aimed to evaluate the success rate of orthodontic mini-implants and to assess the influence of patient- and treatment-related factors on their stability and success rate.
Materials And Methods:
A retrospective analysis of 60 patients was conducted with a total of 121 inserted TADs. Patient sex, age, orthodontic diagnosis, insertion site, and bone quality were analyzed, and descriptive statistics were calculated for all variables. Associations between categorical variables were evaluated using Pearson's chi-square test. Variables showing potential association were further analyzed using multivariate binary logistic regression to identify independent predictors of mini-implant success.
Results:
No statistically significant associations were found between implant success and patient sex (p = 0.240), age (p = 0.819), or insertion site (p = 0.069); however, a trend toward higher failure rates in palatal-placed implants was noted. Logistic regression analysis did not identify any independent predictors of success (p = 0.284), and the model explained only a small proportion of outcome variability (5.9-12.0%).
Conclusions:
The high success rate of the TADs demonstrated high clinical reliability in this study, although patient-related factors such as age and sex did not significantly influence the success rate. Bone quality and soft tissue characteristics may contribute to TAD stability; however, these factors were not directly quantified in the present analysis.