A study on sensitively of clinical periodontal index and subgingival pathogen of fixed-orthodontic patients to metabolite of Lactobacillus

Objectives To use mouthwash made from Lactobacillus DM9811 metabolite to cure the patients bonding fixed-orthodontic appliance 6 months,then to explore the dynamic changing process of clinical periodontal index and suspecte periodontal pathogen before and after treatment.Methods Self-comparison,group-comparison were used.Cultivate,count and examine the change of subgingival plaque were studied.The detective amount and detective ratio of suspected periodontal pathogens were assayed by cultivation,respectively.Results(1)There was a distinct reduce of GI,PI,SBI and PD in experimentation group.Each index in experimentation group was reduced compared with comparison group.(2)The detective amount and detective ratio of suspected periodontal pathogen(BPAR,Fusobacterium and NBPPB-bacteroides) after treatment were reduced.With curing time going by,the detective amount of Streptococcus sanguis had a distinct discrepancy,the experimentation group cases were higher than the others.Conclusions Mouthwash can improve the clinical indexes of the teeth bonding bend.Cases in buccal side were better than in lingual side.It is good at restraining suspected periodontal pathogen in subgingival plaque,cultivating health bacteria,such as Streptococcus sanguis.