Survival Analysis of Orthodontic Micro-Implants: A Retrospective Study on the Effects of Patient-Related Factors on Micro-Implant Success

Aim: The study aims to assess the impact of patient-related factors on the survival and success of orthodontic micro-implants. Materials and methods: A total of 50 patients (27 females, 23 males; mean age, 32.2 ± 3.9 years) received 110 orthodontic micro-implants, which were self-tapping and tapered. The implants were placed in the buccal alveolar bone between the premolars and molars using a self-drilling technique under local anesthesia. Data analysis was done using SSPS software. Results: The study cohort consisted of 50 patients, including 23 males and 27 females. The mean age was 29.3 ± 5.54 years for males and 32.2 ± 4.67 years for females, with an overall average of 30.87 ± 1.2 years. A total of 110 orthodontic micro-implants were analyzed, with 53 placed in male patients and 57 in female patients. Micro-implants that underwent immediate loading demonstrated a higher failure rate, while those classified as Type III in Kuroda’s classification had the greatest risk of failure. However, cortical bone thickness and bone density did not significantly differ between successful and failed micro-implants. Conclusion: The success of orthodontic micro-implants is not influenced by anteroposterior or vertical skeletal patterns.