ABSTRACT
Objective To investigate the correlation between the orthodontic pain score and occlusal function at 24 h after the first time treatment in the patients with fixed orthodontics.Methods Seventy-eight voluntary subjects were selected and treated with MBT straight wire correcting appliance.The VAS scores of spontaneous odontalgia and biting odontalgia (SO-VAS and BOVAS),masticatory efficiency (ME),masticatory times (MT),maximal occlusal force(MF)and occlusion rate before wearing the fixed appliance(T0),at 24 h after wearing(T1) were measured.The changes of above indicators were observed and the correlation among indicators was investigated:Results (1) BO-VAS and SO-VAS were increased after 24 h of orthodontic treatment,while BO VAS was (59.49 ± 19.06) mm,which was significantly higher than SO-VAS[(23.21± 20.80) mm].After 24 h of fixed orthodontic treatment,the patients had occlusal dysfunction,which manifested by ME,MT,MF and SO decrease compared with T0 (P＜0.05).(2) BO-VAS was negatively correlated with ME,MT and MF (P＜0.05).There was no correlation between SO-VAS and occlusal dysfunction.Conclusion There is no obvious magnitude correspondence relation between the occlusal dysfunction grade and the pain grade on the first day after fixed orthodontic treatment,the VAS grading is not yet fully representative of the occlusal dysfunction level,but the credibility of BO-V.AS score is higher than that of SO-VAS score in assessing the degree of occlusal dysfunction.
ABSTRACT
Objective To investigate the correlation between the orthodontic pain score and occlusal function at 24 h after the first time treatment in the patients with fixed orthodontics.Methods Seventy-eight voluntary subjects were selected and treated with MBT straight wire correcting appliance.The VAS scores of spontaneous odontalgia and biting odontalgia (SO-VAS and BOVAS),masticatory efficiency (ME),masticatory times (MT),maximal occlusal force(MF)and occlusion rate before wearing the fixed appliance(T0),at 24 h after wearing(T1) were measured.The changes of above indicators were observed and the correlation among indicators was investigated:Results (1) BO-VAS and SO-VAS were increased after 24 h of orthodontic treatment,while BO VAS was (59.49 ± 19.06) mm,which was significantly higher than SO-VAS[(23.21± 20.80) mm].After 24 h of fixed orthodontic treatment,the patients had occlusal dysfunction,which manifested by ME,MT,MF and SO decrease compared with T0 (P＜0.05).(2) BO-VAS was negatively correlated with ME,MT and MF (P＜0.05).There was no correlation between SO-VAS and occlusal dysfunction.Conclusion There is no obvious magnitude correspondence relation between the occlusal dysfunction grade and the pain grade on the first day after fixed orthodontic treatment,the VAS grading is not yet fully representative of the occlusal dysfunction level,but the credibility of BO-V.AS score is higher than that of SO-VAS score in assessing the degree of occlusal dysfunction.
ABSTRACT
Objective:To evaluate the influence of examination as a transient stressful life event on the psychological status and occlusal function of college students.Methods:47 student volunteers(17 males,30 females;aged 19.30 ± 1.53 years) with normal occlusion were enrolled.SCL-90 questionnaire for evaluation of psychological status and surface electromyography for assessment of masseter and temporalis activities in maximum voluntary teeth clenching and in chewing different foods were performed at two stages (stage 1:one week before final academic examination;stage 2:one week after spring festival holiday).Results:Scores of questionnaire evaluation of psychological status showed obvious change in factors of somatization,interpersonal sensitivity,depression,anxiety and paranoid ideation(P ＜0.05).Paired t-test analysis of masticatory muscle function showed changes only in percentage overlapping coefficient(POC) of masseters in chewing carrot and activity index(AC) in chewing preserved haw jelly(P =0.014 and 0.018 respectively).However,other chewing status and indexes were not significantly changed.Conclusion:The psychological status of college students can be significantly impacted by examination stress without influence on masticatory activities.