Presentation Category
Research, Clinical
Introduction/Context/Diagnosis
The objective of this study was to evaluate the amount of root resorption after orthodontic treatment in patients with Short Root Anomaly (SRA) in comparison with control patients using Cone Beam Computed Tomography (CBCT). We hypothesized that patients with SRA present more susceptibility to root resorption during orthodontic treatment when compared to the normal population.
Methods/Treatment Plan
This was a retrospective study approved by the IRB of the University of the Pacific (UoP). 40 patients were included and divided into two groups: SRA, n=20, and Control, n=20. CBCT scans were collected before (T1) and after the completion of orthodontic treatment (T2). Tooth volume and length were assessed. Segmentation of the 4 upper incisors was done using the software ITK-SNAP and exported as a 3D model to the 3D-Slicer where the tooth length was measured.
Results/Outcome
The independent t-test showed no differences in the tooth length or volume in T2-T1 between both groups. The paired t-test (T2-T1) showed a statistically significant reduction of length (mm) in both groups, with an average of 0.81 and 0.89 (left and right upper laterals) and 1.03, and 1.10 (left and right upper centrals) in the Control, and 0.70, 1.27, 0.66 and 0.51 in the SRA respectively. Treatment time was not significant in both groups. When the upper laterals and centrals were analyzed together, we found a statistically significant reduction in the length in both groups and for the SRA the volume reduced in the upper laterals.
Significance/Conclusions
Our study suggests that SRA patients are not more susceptible to root resorption than the control group, except for the upper laterals with a small magnitude in the volume.
Format
Event
CBCT Analysis of Root Resorption in Orthodontic Patients with Short Root Anomaly
The objective of this study was to evaluate the amount of root resorption after orthodontic treatment in patients with Short Root Anomaly (SRA) in comparison with control patients using Cone Beam Computed Tomography (CBCT). We hypothesized that patients with SRA present more susceptibility to root resorption during orthodontic treatment when compared to the normal population.
Comments/Acknowledgements
This study was partially funded by the Research Enhancement Award Activity 141 from the Unive