A Brief Review on Micro-Implants and Their Use in Orthodontics and Dentofacial Orthopaedics

Abstract

The aim of this study was to review the literature and evaluate the failure rates and factors that affect the stability and success of temporary anchorage devices (TADs) used as orthodontic anchorage. Data was collected from electronic databases: MEDLINE database and Google Scholar. Four combinations of term were used as keywords: “micro-implant”, “mini-implant”, “mini-screw”, and “orthodontics”. The following selection criteria were used to select appropriate articles: articles on implants and screws used as orthodontic anchorage, published in English, with both prospective and retrospective clinical and experimental investigations. The search provided 209 abstracts about TADs used as anchorage. After reading and applying the selection criteria, 66 articles were included in the study. The data obtained were divided into two topics: which factors affected TAD success rate and to what degree and in how many articles they were quoted. Clinical factors were divided into three main groups: patient-related, implant related, and management-related factors. Although all articles included in this meta-analysis reported success rates of greater than 80 percent, the factors determining success rates were inconsistent between the studies analyzed and this made conclusions difficult.

FEM Analysis of Individualized Polymeric 3D Printed Guide for Orthodontic Mini-Implant Insertion as Temporary Crown Support in the Anterior Maxillary Area

“…Many orthodontists avoid using mini-implants due to fear of failure and limitations of surgical skills [ 12 ]. Providing a more accurate alternative to free hand insertion could encourage clinicians to take this method into consideration.…”

“…Although anchorage control is the main use of mini-implants in orthodontics, studies have reported successful use of these devices as support for provisional crowns as an alternative to bonded bridges and dentures, in both growing and adult patients [ 12 , 13 ]. Being one of the most prevalent missing anterior teeth, the majority of studies describe this method for the replacement of the upper lateral incisor [ 14 , 15 , 16 , 17 , 18 ].…”

Enhancement of bioactivity and osseointegration in Ti-6Al-4V orthodontic mini-screws coated with calcium phosphate on the TiO2 nanotube layer

“…According to several studies, the nanostructured surface has a larger surface area than the microstructured surface, leading to better osseointegration. 19 , 23 The nanotube TiO 2 layer produced by anodizing treatment has enough space to store various chemicals, including drugs. The space of the nanotube can be used as a carrier for delivery of drugs or bioactive materials.…”

The success rate of mini‐screws for incisors intrusion and patient age, gender, and insertion angle in the maxilla using CBCT and implant‐guided surgery. A split‐mouth, randomized control trail

“…The efficiency of these methods frequently depends on patient cooperation. Alternatively, micro‐implants (MIs), also referred to as temporary anchorage devices (TADs), mini‐implants, or mini‐screws have been used to achieve challenging orthodontic movements, including guiding osteo‐distractions, stabilizing an edentulous premaxilla, and moving teeth into atrophic alveolar sites 1 . Orthodontic mini‐implants can be a helpful tool to solve difficult malocclusion problems that require excessive anchorage force.…”