ABSTRACT
PURPOSE: To compare the effects of analgesic therapies on odontalgia caused by pulpitis in molars by three different methods. METHODS: 173 molars were diagnosed as irreversible pulpitis, and randomized block designed in three groups. Under block or local anesthesia: 46 cases of the first group, leaving teeth on open drainage, after 1 day, sealing devitalized material (arsenic), arranged next appointment 2 weeks later. 52 molars of the second group, enlarging exposure site, drainage several minutes only, sealed devitalized material, re-examined 2 weeks later. 75 cases of the third group, removing roof of pulp chamber, undergoing pulpectomy directly, re-examined 1 week later. Adopting VAS(vital analogue scale) to analyze the pulp receptivity of three different methods and to evaluate the analgesic effects by complete analgesia, effective analgesia, and no response. The data was analysed using chi-square test. RESULTS: The rate of complete analgesia was 50.0%, 63.46% and 76.0%, respectively. There was a significant difference in complete analgesia among the three methods. The analgesic effect of the third group (pulpectomy) was significantly higher than that of the first group (P<0.01).Pulpectomy group had impossibility of adverse effects caused by using devitalizing material (arsenic). CONCLUSIONS: It is worthy to adopt pulpectomy extensively to relieve the pain of molars caused by pulpitis clinically. The course of treatment of the third group was significantly shorter than other groups, and the simultaneous symptoms occurred rarely.
