牙周细菌光动力疗法在固定正畸治疗青少年患者牙龈炎病变中的应用OACSTPCD

Objective:The application effect of periodontal bacterial photo dynamic therapy in receiving fixed ortho-dontic treatment.Methods:From July 2020 to June 2023,80 adolescent gingivitis patients who received fixed orthodontic treatment were selected and divided into control group(40 cases,initial periodontal therapy)and study group(40 cases,initial periodontal therapy+periodontal bacterial photo dynamic therapy)using a random number table method.The plaque index(PLI)and sulcus bleeding index(SBI),the number and percentage of positive points for bleeding on probing(BOP),inflam-matory factors in gingival crevicular fluid,and treatment efficacy were compared between the two groups.Results:Compared with before treatment,the PLI and SBI,the number and percentage of BOP positive points of the two groups decreased after 2 weeks of treatment,and compared with the control group,the study group had lower PLI and SBI,the number and percentage of BOP positive points after 2 weeks of treatment(P<0.05).Compared with before treatment,the levels of tissue inhibitor of metalloproteinase-1(TIMP-1)increased,while the levels of matrix metalloproteinase-8(MMP-8),interleukin-17(IL-17),and IL-1β decreased.After 2 weeks of treatment,compared with the control group,the study group had higher levels of serum TIMP-1,lower levels of MMP-8,IL-17 and IL-1β(P<0.05).Compared with the total effective rate of 62.50%in the control group,the study group's 87.50%was higher(P<0.05).Conclusion:Performing periodontal bacterial photo dynamic therapy in adolescent gingivitis patients undergoing fixed orthodontic treatment can improve the number and percentage of positive points for PLI,SBI,and BOP,alleviate inflammation,and improve treatment effectiveness.