Efficiency evaluation of physiological anchorage control technique in patients with tooth extraction for orthodontics

  Objective  To explore the efficiency of physiological anchorage control technology in patients with tooth extraction for orthodontics.

  Methods  Totally 70 patients with tooth extraction were randomly divided into control group (n=35) and experimental group (n=35). The control group was treated with bracket correction and auxiliary anchorage device, while the experimental group was treated with physiological anchorage control technology. Therapeutic time and therapeutic effect of the two groups were compared.

  Results  The therapeutic time of the experimental group was (3.62±0.87) months, which was significantly shorter than (4.78±1.54) months of the control group (P < 0.05). There were significant differences in U1-NA angle and U1-NA before and after treatment in the experimental group (P < 0.05). There were significant differences in U1-SN, U1-NA, NLA and U1-L1 before and after treatment in the control group (P < 0.05).

  Conclusion  Application of physiological anchorage control technology in tooth extraction can effectively enhance the anchorage of molars, reduce the use of additional anchorage and shorten the alignment time.