Journal
JOURNAL OF ENDODONTICS
Volume 40, Issue 11, Pages 1758-1763Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.joen.2014.07.029
Keywords
Cone-beam computed tomography; mimics; pulp cavity; tertiary dentin
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Introduction: The purpose of this study was to observe and evaluate 3-dimensional pulp cavity changes during orthodontic treatment. Methods: Eighty-seven patients' formed the study sample and were divided into an experimental group (48 patients) and a control group (39 patients). Cone-beam computed tomographic (CBCT) records were obtained before the start of the treatment (TO) and after space closure for the experimental group, whereas for the control group CBCT images were obtained approximately 17-18 months (T1) after obtaining the first image (TO). CBCT data were reconstructed with surface and volume rendering software (Mimics; Materialise, Leuven, Belgium), and the volumetric images were modified to display the teeth from various orientations. Six anterior teeth were segmented and their pulps isolated. Paired t test was used to check for statistical significance. Results: The difference in the pulp volume was statistically significant at P < .05 for all the anterior teeth in the experimental group and at P < .05 for the right canine, P < .05 for the right and left lateral incisors, and P < .05 for the left central in the control group. Conclusions: Orthodontic treatment in the experimental group produced a significant decrease in the size of the pulp, which was statistically' significant.
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