Impact of cone-beam computed tomography scan mode on the diagnostic yield of chemically simulated external root resorption.
Am J Orthod Dentofacial Orthop
; 151(6): 1073-1082, 2017 Jun.
Article
in En
| MEDLINE
| ID: mdl-28554453
INTRODUCTION: The aim of this in-vitro study was to evaluate the influence of cone-beam computed tomography scans on the diagnosis of chemically simulated external root resorption. METHODS: One hundred extracted anterior teeth were selected. Subsurface demineralization was induced on a limited area of the apical third of the root of 49 teeth. Each tooth was placed in an empty socket of a partially edentulous dry mandible. Cone-beam computed tomography images were obtained according to 3 protocols: (1) half scan, 0.40-mm voxel size; (2) full scan, 0.40-mm voxel size; and (3) full scan, 0.125-mm voxel size. Three observers evaluated the images. Sensitivity, specificity, accuracy, and area under the curve were compared with the Cochran Q and Mann-Whitney U tests. RESULTS: Protocol 3 had the highest sensitivity (81.63%), accuracy (80.67%), and area under the curve (0.807). There were statistically significant differences between protocol 3 and the other 2 protocols (P <0.001). The specificity of protocol 1 (84.97%) was greater than that of protocols 2 (69.93%) and 3 (79.74%); however, a statistically significant difference was found only between protocols 1 and 2 (P = 0.005). CONCLUSIONS: A more dedicated, high-resolution scan should be acquired when one intends to investigate the early stage of external root resorption during orthodontic treatment. However, this does not imply that all orthodontic patients should be subjected to high-dose cone-beam computed tomography scans.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Root Resorption
/
Cone-Beam Computed Tomography
Type of study:
Diagnostic_studies
/
Guideline
/
Prognostic_studies
Limits:
Humans
Language:
En
Journal:
Am J Orthod Dentofacial Orthop
Journal subject:
ODONTOLOGIA
/
ORTODONTIA
Year:
2017
Document type:
Article
Country of publication:
United States