Evaluation of Failure Rate for Cortical Dental Implants Placed in the Mandibular Anterior Region: A Systematic Review

Abstract

Introduction: To enhance the success of dental implants, it is crucial to understand the factors contributing to implant failure. Practitioners should carefully evaluate the relevance and impact of critical risk factors associated with the mandibular anterior region to gauge the potential for implant failure. Aim: To assess the rates of implant failure for implants placed in the mandibular anterior region. Materials and Methods: For this systematic review, the eligibility criteria for present study included randomised and non randomised clinical trials, prospective cohort studies, and retrospective studies published in the English language between 2000 and 2022. These studies specifically documented dental implant failure rates in the anterior mandible, excluding reviews, in-vitro, cadaveric, and animal studies, as well as case series studies. The participants considered were systemically and mentally healthy individuals aged 18-90 years who had undergone oral restoration using dental implants in the anterior mandibular area. Exclusion criteria involved patients who did not undergo oral restoration with dental implants in the anterior mandibular region, those with systemic diseases affecting implant success, serious cardiac diseases, deficient homeostasis, blood dyscrasias, and psychological diseases. The intervention focused on patients rehabilitated with cortical dental implants in the mandibular anterior region, without a specific comparator or control. Based on the mentioned criteria, nine studies were included. The main outcome of interest was the dental implant failure rate. Results: The review's included studies indicated the placement of 3,718 implants in the mandibular anterior region, with 86 failures, resulting in a 2.31% failure rate, suggesting an approximate 3% failure rate for implants in this area. Conclusion: Given the multifactorial nature of implant failure, the available literature does not support the designation of the mandibular anterior region as a specific risk factor for such failures.