Evaluation Of Masticatory Efficiency In Patients After Orthodontic Treatment

Objective: To study the masticatory efficiency in patients after orthodontic treatment which have different characteristics, and comparativily analysis the masticatory efficiency in adult patients after orthodontic treatment with aduilts which have individual normal occlusion,so as to explore the key factors which can influence the masticatory efficiency of patients after orthodontic treatment and effectively predict the prognosis of patients .Methods: a selection of 110 patients aged 12-35 years old which in the period of 3-4 months after the orthodontic treatment as study, measure the masticatory efficiency by absorbance method and judge factors which can influence the masticatory efficiency through multiple regression analysis. Another selection of 60 adult patients aged 18-35 years old which in the period of 3-4 months after the orthodontic treatment as the experimental group , and 60 adults aged 19-24 years old with individual normal occlusion without a history of orthodontic treatment as the control group, , measure the masticatory efficiency of each sample and sutdy the difference between two groups and impact factors through analysis of variance.Results: (1) multiple regression analysis suggested that the number of chewing, overbite, type of malocclusion and masticatory efficiency are correlated (P <0.05), the number of chewing, overbite and chewing performance are positive correlation . masticatory efficiency of Angle I patients is higher,and masticatory efficiency of Angle III patients is lower. (2) masticatory efficiency in adult patients of 3-4 months after treatment lower than adults with individual normal occlusion (P <0.05), orthodontic patients with different extraction curing type treated with postoperative masticatory efficiency no difference (P> 0.05).Conclusion: Lifting deep overbite to improve the chewing function, access to good effect has an important significance, suggesting that clinicians should pay full attention to reviewing overbite in the formulation of our treatment programmes. In the masticatory efficiency experimental testing, too fast or too slowly chewing on a test might affect the test results should be given to the subjects of the day-to-day eating habits of chewing way to cope with. Adult patients need longer to maintain and chewing function recovery time. Whether extraction or no-extraction, in either mode of extraction, as long as appropriate, reasonable, chewing functions will be improved. PAR index is combined with masticatory efficiency,and then the approach to evaluation orthodontic efficacy will be more comprehensive.