The Effect Of Different Intervention Measures On Oral Hygiene Maintenance In Adolescent Patients During Orthodontic Treatment With Fixed Appliance

Objective: The purpose of this study is to compare the effect of two different intervention measures on oral hygiene maintenance in adolescent patients during orthodontic treatment with fixed appliance, and to explore a measure to maintain periodontium which was easy to accept for a long-term.Methods: Inclusion and exclusion were used to select 210 subjects who were randomly divided into three groups, with different oral of hygiene prophylaxis, each group 70 patients. The experimental group one strengthened oral health education combined with using the local application of compound tea polyphenols gargle. The experimental group two only reinforced oral health education. The control group was treated with conventional oral hygiene instruction. The patients accepted scaling one week before intervention. The periodontal indexes were examined at baseline, 4, 8and 12weeks after intervention and questionnaire survey was conducted among the two experimental group patients in order to evaluate the validity of interventions by examining clinical index and subject perception of patients.Results: (1) There were no significant differences for plaque index and gingival index among groups before intervention (P>0.05), the baseline was comparable.(2) GI: The comparison among three groups :there were highly significant differences of the gingival index among the three groups at 4, 8 and 12 weeks after intervention(P<0.01). With the observational time prolonged ,the gingival index decreased at 4, 8, 12weeks compared with baseline in experimental group one(P<0.01). The gingival index was no significant among the other weeks(P>0.05). The gingival index were highly different between baseline and 4weeks, 4weeks and 12weeks in experimental group two(P<0.01); there was difference between baseline and 8weeks(P<0.05).There were no differences of gingival index between baseline and 12weeks, 4 and 8weeks, 8 and 12weeks(P>0.05).The gingival index worked up from baseline to 4, 8,12weeks in control group, there were notably significant differences between baseline, 4, 8 and 12weeks(P<0.01).(3) PLI: The comparison among three groups: there were highly significant differences of the plaque index among the three groups at 4, 8 and 12weeks after intervention (P<0.01). There were highly significant differences of the plaque index between baseline and 4, 8 and 12 weeks, 4 and 12 weeks, 8 and 12 weeks in experimental group one(P<0.01), and no significant difference between 4 and 8weeks(P>0.05).There were highly significant differences between the baseline and 4, 8 and 12weeks (P<0.01), statistically significant differences between 4weeks and 12weeks (P<0.05), and no significant differences between 4 and 8weeks, 8 and 12weeks in experimental group two (P>0.05). With the extension of observation time, the plaque index gradually increased at 4, 8 and 12weeks. There were highly significant differences between the baseline and 8, the baseline and 12weeks, the 4weeks and 8weeks, 4weeks and 12weeks, the 8weeks and 12 weeks (P<0.01). The plaque index was higher than baseline in 4 weeks after the intervention , but there was no significant differences between them(P>0.05).(4) Questionnaire survey: More than 75% patients approved the intervention measure, the data showed that more patients agreed with the reinforced oral hygiene prophylaxis after intervention. Only one or three patients didn't understand the oral health knowledge and the intervention measure. With the time prolonged, more than 80% patients satisfied with the taste, odor, comfort and convenience of compound tea polyphenols gargle. The satisfaction rate were gradually increased from 4weeks to 12weeks.Conclusion: The datas of clinical examination and questionnaire investigation indicated that whether only strengthened oral health education or reinforced oral health education combined with local application of compound tea polyphenols gargle were helpful for improving oral health status and maintaining periodontium with fixed appliance, furthermore, using the extra compound tea polyphenols gargle was more effective than strengthened oralhealth education only.