Asymmetric Extraction as an Intergal Part of the Therapy by Solid Orthodontic Apparatus

Summary

Objective:
The aim of the present study was to analyze the frequency of individual types of extraction orthodontic therapy and to show indications and execution of asymmetric extractions.

Material and Methods:
The authors performed a retrospective study of patients treated with a fixed orthodontic appliance in the period of 2001 through May 2008. The examined cohort included 475 patients – 316 women and the age of 9 to 48 years (mead age 16.2 years) and 159 men at the age of 9 to 35 years (mean age 14.92 years). From the available documentation and the results of examination the authors recorded diagnostic data of the patients and the orthodontic treatment. In the extraction method the type of the extracted tooth was analyzed. Indications and execution of asymmetric extractions is documented by the case reports.

Results:
Extractions of permanent teeth were performed in 123 patients (25.89%). In 39 patients (8.21%) there were symmetric extractions from one jaw, in 24 patients (5.05%) there were symmetric extraction in both jaws, 50 other patients (10.52%) had asymmetric extractions in one booth arch and asymmetric extraction in both jaws were indicated in 10 patients (2.1%)

Conclusion:
In one fourth of the orthodontic patients the extraction of a permanent tooth is the necessary component of orthodontic treatment. In half of the extraction cases there are symmetric extractions and in the other half there are asymmetric extractions of teeth in one or both jaws. A correct indication of asymmetric extractions and a precise performance of the subsequent orthodontic therapy employing a segmental technique, results in aesthetic, functional and stable results.

Key words:
tooth extraction - asymmetric extraction - orthodontic treatment - fixed orthodontic appliance