Exposed To Oral Surgery Combined Orthodontic Traction Inversion And Impaction In The Incisor Effects On Root Growth

ObjectiveUsing oral cone beam CT(CBCT)understanding for maxillary teeth period ambush maxillary incisor in the inversion of development situation,through the images before and after treatment to observe,analyze ambush maxillary incisor traction before and after treatment in inversion of root development,compare normal tooth root with the same therapeutic effect evaluation and analysis of the effect and significance of treatment.MethodsA total of 14 patients aged from 8 to 11 with inversely impacted central incisors in the maxillae were treated with orthodontic traction.The traction was performed by straight wire appliance.According to the age and gender of the patients,the CBCT was employed in comparting the impacted teeth before and after the surgery.Root length,thickness of the root canal wall and the bending degree of the root were measured to judge the difference of the development of impacted teeth and the contralateral homonym teeth.ResultsAfter surgical exposure and orthodontic traction combined treatment.,All the 14 impacted teeth reached the standard of traction success,and the root of the middle incisors of the maxillary impacted teeth continued to develop without root tips to absorb and stop the development.The change of root length: the length of the tooth root(9.36±1.86)mm before the inversely impacted central incisorsin the maxillae was treated,and the control group(12.64 ±0.78)mm,and the two groups were compared with p<0.05.The tooth root length(11.69±1.16)mm was obtained after surgical exposure and orthodontic traction combined with orthodontic traction.the control group(13.06± 0.74)mm,and the two groups were compared with p<0.05.The root length of the incisors in the upper jaw of ambulatory resistance was increased(2.33 ±1.28)mm,p<0.05.2、The changes in the thickness of the root canal wall: the thickness of the wall thickness(2.06 ± 0.12)mm before the inversely impacted central incisorsin the maxillae was treated,and the thickness of the root canal wall of the control group(2.12 ±0.15)mm,the comparison between the two groups was p>0.05;After surgical exposure and orthodontic traction combined with orthodontic traction,the thickness(2.29±0.19)mm of the root canal wall was measured,and the thickness of the root canal wall(2.35 ± 0.18)mm was compared with that of the control group,and the two groups were compared with p>0.05.3、Maxillary ambush in the maxillary incisor root length less than control of the same name teeth before treatment,after surgical exposure with orthodontic traction rectification therapy after embedded teeth root length was increased,the crown root ratio is better than the before treatment,the difference was statistically significant;However,after the treatment,the root length of the teeth of the ambushes and the teeth of the same name were compared,and the root length of the teeth was shorter than that of the control.In the two groups after treatment the root of the wall thickness increased,but the two groups before treatment no statistical differences to the root of the tube wall thickness,treatment after the contrast between the wall thickness difference there is still no statistical difference.t may not be possible to change the original root curvature of the teeth,and the original curvature of the teeth before and after traction will not disappear,while the newly developed tooth root will form a new curve during the traction process.ConclusionUnder the surgical exposure of orthodontic traction treatment,the inversely impacted central incisors in the maxillae provided a good clinical treatment result.The roots continued to develop with root canal well developed.The positive therapeutic significance was shown.