The Clinical Evaluation Of Dentine Hypersensitivity About The Patients Who Had Periodontal Disease After Ultrasonic Supragingival Scaling

Objective:To evaluate the prevalence and intensity of dentine hypersensitivity (DH) after Ultrasonic supragingival scaling during the patients who had periodontal disease and the relation between Ultrasonic supragingival scaling and DH, relying on that the relative test measures about the baseline and after Ultrasonic supragingical scaling.Method:The study was carried out with 40 subjects,640 teeth in total,who had periodontal disease requiring for ultrasonic supragingival scaling. DH was scored by the subjects on a 0-10 visual analogue scale (VAS)after cold air stimulation of the test teeth at baseline and 5 minutes after the treatment,3 days after the treatment and 1 week after the treatment. The prevalence and intensity of DH was compared between the baseline and post-treatment.Probing depth (PD), bleeding index(BI), plaque index (PLI) were recorded at the baseline and the first week after the treatment. All the gathered data were analyzed by the t-text, two-sample t-test and Fisher probabilities in 2×2 table of the SPSS 17.0.Results:1.There is a significant increase in the prevalence of DH after 3 days after the treatment (39.84%) compared to baseline data(19.38%), P<0.05.The VAS of hypersensitive teeth 3 days after the treatment is as also significantly higher than that at baseline, P<0.05. 2.1 week after the treatment, the prevalence and intensity of DH shows decrease. No significant difference is found compared with baseline, P>0.05.3.The VAS are higher with the progression of the periodontal diseases, P<0.05.4.Ultrasonic supragingival scaling obviously decreases periodontal disease patients'PD, BI and PLI (P<0.05).Conclusion:1.Periodontal disease may be one of the factors of dentine hypersensitivity (DH).2.Ultrasonic supragingival scaling is probably a factor of motivation of dentine hypersensitivity in a short period.3.Ultrasonic supragingival scaling has a positive effect on periodontal disease. However, the procedure during the operation and the desensitization therapy after has to be concerned.