Extraction of low horizontally and buccally impacted mandibular third molars by three-section methud / 口腔疾病防治

ABSTRACT

Objective@# This study aims to investigate the clinical effect of the improved extraction of low horizontally impacted mandibular third molars via a “three-section” method.@*Method@#Sixty patients with low horizontally impacted mandibular third molars on both sides were selected for this study. A high-frequency electrotome, a 45 degree high-speed turbine and a special long drill needle were used in the test group. The improvement was called “three section”, which meant that the tooth was cut into three parts; first, the middle part was taken, then the root, and then the crown. One month later, the other side (control) was extracted using the regular method (the tooth was cut in two parts, and the crown was removed first). Operation time, swelling, pain, and limitations to mouth opening were carefully recorded and statistically analyzed.@*Results@#The time for the modified “three-section” method, which was used to remove the third molar embedded in the lower part of the lower jaw, was (10.05 ± 0.51) min, while the mean time for conventional extraction was (20.15 ± 0.88) min, and the difference was statistically significant (P< 0.01). There were significant differences (P< 0.01) in swelling, pain and limitations to mouth opening between the test group and the control group.@*Conclusion@#he use of the “three-section” method to extract third molars horizontally embedded in the lower jaw is associated with a shorter operation time, reduced trauma and reduced postoperative reactions, and it has valuable clinical applications.