| Objective:The aim of this clinical trial was to compare the effect of anterior middle superior alveolar anesthesia(AMSA)in computer-controlled local anesthesia delivery system(CCLAD)with conventional hand-push anesthesia in maxillary periodontal scaling and root planning,including pain sensation during injection,effectiveness in anesthesia for a pianless treatment.Methods:Twenty-five adults suffered from chronic periodontitis were enrolled in this study who had no periodontal treatmental contraindications and missing or to be extracted tooth in maxillary bone ranging from the central incisor to the second primary molars.Self-controll method was adopted in this study.Meanwhile,the right side of maxillary anesthesia used CS as control groups while the left side to be treated used the AMSA of CCLAD as experimental groups.The visual analogue scale(VAS)was used to compare the pain of AMSA anesthesia in CCLAD with conventional hand-injected anesthesia during injection and anesthetic effect was evaluated during operation.Finally,the pain situation and the anesthetic effect were statistically analyzed,.The VAS values of the two groups were compared using the t test,and the comparison of the anesthetic effects was performed using the Wilcoxon Signed Ranks test with a test level of α = 0.05.Results:The anesthetic effects of the control group and the experimental group were statistically significant(P>0.05).The average VAS value of the experimental group was(3.44±1.51)points;the average VAS value of the control group was(4.12±1.34).The VAS of the two groups were statistically analyzed.There was a difference between the two group(P<0.05),and the difference was statistically significant(t=2.335,P<0.028).Conclusion:AMSA acts on the maxillary periodontal scaling,and the pain generated is small when there is not much difference from the traditional hand-push anesthetic effect.It can ensure the smooth completion of the whole operation,suggesting that AMSA can be considered to complete the anesthesia process in some operating areas during clinical periodontal scaling. |