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| The study of orthodontic treatment on root resorption of nonvital pulp teeth and vital pulp teeth |
| WANG Yanli1,2, GAO Yuguang1 |
1 College of Stomatology,Binzhou Medical University,Yantai 264003 P.R China;
2 Department of Stomatology,Binzhou People's Hospital |
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Abstract Objective To investigate the effect of orthodontic treatment on the absorption of nonvital pulp teeth and vital pulp teeth in patients of different age and gender.Methods 60 cases of patients who had been treated by fixed orthodontic appliance for not less than 12 months were randomly chosen with panoramic radiograph.At least one tooth of each patient's dentition had been treated with root canal treatment.The root length of the same patient's nonvital-pulp teeth and the contralateral vital-pulp teeth were measured before and after treatment,and the data were statistically analyzed.Results There was no significant difference in root resorption of nonvital and vital pulp teeth after orthodontic treatment.There was no significant difference in root resorption between different ages in males or females.There was significant difference in root resorption of non-vital pulp teeth between different ages in male or female during orthodontic treatment.Conclusion Orthodontic treatment didn't increase the risk of root resorption of vital pulp teeth.Orthodontic treatment had significant effects on root resorption of different age groups.
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Received: 25 February 2017
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