Effects of oral hygiene prophylaxis on the periodontal microflora and clinical(indexes) of fixed orthodontic patients

Objective The oral hygiene of malocclusion patients was kept by periodontal scaling and reinforced oral hygiene prophylaxis.The dynamic variation of periodontal microflora and clinical indexes was observed to study the effects of professional prophylaxis to periodontal microflora.Methods 20 malocclusion patients were divided into two groups.Group T was experimental,and group C was control.Right maxillary first molar 16 and right mandibular central incisor 41 were the observed teeth.Before orthodontic treatment,the periodontal status of the observed teeth were examined,and gingival sulcular plaques were collected and cultured.Group T accepted supragingival scaling before orthodontic treatment and oral hygiene instruction when return visited monthly.Group C accepted no special treatment except the initial oral hygiene instruction.The clinical indexes and microflora were examined at the 1st,3rd and 6th months after treatment.Results With the observational time prolonged,the plaque index and gingival index of buccal side decreased at the 1st,3rd, 6th months compared with baseline in group T.The plaque index of buccal side increased while the probing depth of lingual side decreased at the 6th months compared with baseline in group C.The detective rate and counts of Veillonella in group T decreased,while that of Campylobacter and black-pigmented gram negative anaerobic rod(BPAR) in group T and Peptostreptococcus and BPAR in group C increased.The detective rate of BPAR at the 3rd month and that of Peptostreptococcus at the 6th month in group T lower than that in group C(P0.05).The detective counts of flora and the clinical indexes were no significant between two groups(P0.05).Conclusions Preventive periodontal scaling was proposed for gingivitis patients before orthodontic treatment.Periodontal scaling should combine with oral hygiene instructions and methods of plaque controlling daily.