The effectiveness of surgical and non-surgical techniques in orthodontic practice in closing post-extraction spaces: a systematic review

Reducing the orthodontic treatment duration is an important issue, especially for adult patients who want to complete treatment faster due to social or aesthetic reasons. In addition, an increase in the duration of orthodontic treatment has a number of side effects, therefore, orthodontists and patients are interested in the use of techniques that can accelerate the movement of teeth. Shorter treatment times can be achieved through a combination of orthodontic and surgical or non-surgical techniques.Aim. To systematically evaluate scientific data on the effectiveness and side effects of surgical and non-surgical methods in accelerating orthodontic treatment in situations with the removal of premolars and subsequent closure of the post-extraction spaces.Materials and methods. Electronic search of articles was carried out using search engines and databases: Cyberleninka, eLIBRARY, Google Scholar, Pub Med, SCOPUS. The publication date criterion was selected from January 2010 to January 2021. Articles included in the systematic review had to meet the following inclusion criteria: controlled clinical trials and randomized controlled clinical trials conducted in humans and published in the last 11 years in English language. The systematic review included and analyzed 15 full-text articles.Result. According to the systematic review, the speed of movement of teeth increases 2 times with corticotomy, and 1.5 times with piezocorticotomy, which is consistent with the data of other studies. At the same time, the effectiveness of the movement remains for no more than 2 months after the intervention.Conclusions. The corticotomy procedure reduces the treatment time in comparison with traditional methods by 30-50% (6-8 months). The investigated techniques did not have a significant effect on the depth of probing, the level of attachment, on the density of bone tissue, rotation and inclination of the moved teeth. Since no complications were identified for 2-4 months of observation, further studies are required to assess long-term results in the long term