Evaluation of treatment outcomes and analysis of influencing factors for different grades of ectopic eruption of the first permanent molars
AIM:To investigate the effects of different grades of ectopic eruption of first permanent molarstreated with different orthodontic methods.METHODS:A total of 20 patients with ectopic eruption of the first permanent molars were selected from the Department of Stomatology of Henan Children's Hospital,and the degree of ectopic eruption of the first permanent molars in 10 patients was graded as grade Ⅰ or Ⅱ,and the orthodontic rings or springs were used for orthodontic treatment.In 10 patients,the first permanent molars were graded as grade Ⅲ or Ⅳ,and modified Halterman appliance was applied.The differences in age,gender,and treatment time between the two groups were analyzed.The changes in the mesial inclination angle of the molars before and after orthodontic treatment of the first permanent molars erupted by different grades of ectopic eruption were measured.The correlation analysis was carried out with the variables.RESULTS:The average age of orthodontic treatment in the dental group was 7.3 years,the average age of the orthodontic group was 8.2 years,the longest treatment time was 150 days and the shortest was 60 days,the average orthodontic time of the patients in the dental group was 87 days,and the average orthodontic time of the orthodontic group was 125 days.The proportion of male children in both groups was higher than that of female children.There was a statistically significant difference in the average mesial inclination angle of the first permanent molars before and after treatment in the two groups.CONCLUSION:The treatment of ectopic erupted first permanent molars with tooth segmentation and removable appliances can achieve good results,and the different grading degrees may be related to the difference in age,treatment time,and the angle of the first permanent molars before and after treatment.
ectopic eruption of the first permanent molarreversible eruptionirreversible eruptionsecond deciduous molar
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