American Journal of Orthodontics and Dentofacial Orthopedics
Online onlyComparison of 6 cone-beam computed tomography systems for image quality and detection of simulated canine impaction-induced external root resorption in maxillary lateral incisors
Section snippets
Material and methods
A child cadaver skull in the early mixed dentition phase was used; this skull had an impacted left maxillary canine (Fig 1). CBCT radiographs of the dry skull were taken in specific in-vitro conditions as described by Alqerban et al.26 Briefly, 8 setups were examined, each with a different maxillary left lateral incisor placed into the extraction site of the maxillary left lateral incisor. Each of the 8 selected lateral incisors was specifically modified to simulate the resorption process
Results
The image quality scores of pulp, dentin, and enamel; lamina dura; and overall image noise scored by 12 observers (first evaluation session) of each CBCT system are shown in Figure 3, A. The results of the second evaluation session of the image quality of dental structures by the 2 radiologists are shown in Figure 3, B. Figure 4 shows the sum of the image quality scores for each CBCT system. The differences in the image quality scores between CBCT systems were statistically significant (P
Discussion
Image quality has been extensively discussed in the literature. The assessment of root resorption caused by an impacted canine to the adjacent teeth by using images of high quality is essential to allow for the best visualization of early resorption and to decrease misinterpretation caused by image noise. The 3D imaging has been readily available for accurate, easily interpreted representations of root resorption. In previous studies, CBCT has been used to evaluate the severity of resorptive
Conclusions
Based on the results of this study, the CBCT systems tested showed variable image qualities. This might have surely affected the detectability and diagnostic accuracy of root resorption lesions. All CBCT systems in this study showed high accuracy in the detection of root resorption. There was no significant difference among CBCT systems in the detection of the severity of root resorption.
References (36)
- et al.
Film and digital radiography for detection of simulated root resorption cavities
Oral Surg Oral Med Oral Pathol Oral Radiol Endod
(1998) - et al.
Diagnosis of artificially induced external root resorption using conventional intraoral film radiography, CCD, and PSP: an ex vivo study
Oral Surg Oral Med Oral Pathol Oral Radiol Endod
(2008) - et al.
Assessment of external root resorption using digital subtraction radiography
J Endod
(1992) - et al.
Three-dimensional localization of maxillary canines with cone-beam computed tomography
Am J Orthod Dentofacial Orthop
(2005) - et al.
Localization of impacted maxillary canines and observation of adjacent incisor resorption with cone-beam computed tomography
Oral Surg Oral Med Oral Pathol Oral Radiol Endod
(2008) - et al.
Detection of apical root resorption after orthodontic treatment by using panoramic radiography and cone-beam computed tomography of super-high resolution
Am J Orthod Dentofacial Orthop
(2009) - et al.
Root-contact evaluation by panoramic radiography and cone-beam computed tomography of super-high resolution
Am J Orthod Dentofacial Orthop
(2010) - et al.
Quantification of tooth displacement from cone-beam computed tomography images
Am J Orthod Dentofacial Orthop
(2009) - et al.
In-vitro comparison of 2 cone-beam computed tomography systems and panoramic imaging for detecting simulated canine impaction-induced external root resorption in maxillary lateral incisors
Am J Orthod Dentofacial Orthop
(2009) - et al.
A comparative evaluation of cone beam computed tomography (CBCT) and multi-slice CT (MSCT) Part I. On subjective image quality
Eur J Radiol
(2010)
Influence of voxel size in the diagnostic ability of cone beam tomography to evaluate simulated external root resorption
J Endod
Image quality produced by different cone-beam computed tomography settings
Am J Orthod Dentofacial Orthop
Root resorption—diagnosis, classification and treatment choices based on stimulation factors
Dent Traumatol
Incisor root resorptions due to ectopic maxillary canines imaged by computerized tomography: a comparative study in extracted teeth
Angle Orthod
Does the canine dental follicle cause resorption of permanent incisor roots? A computed tomographic study of erupting maxillary canines
Angle Orthod
Radiographic assessment of simulated root resorption cavities
Endod Dent Traumatol
Radiographic assessment of simulated external root resorption cavities in maxillary incisors
Endod Dent Traumatol
Digital subtraction radiography for assessment of simulated root resorption cavities. Performance of conventional and reverse contrast modes
Endod Dent Traumatol
Cited by (63)
Appropriate timing of treatment contributes to better root development of impacted anterior teeth in children
2024, American Journal of Orthodontics and Dentofacial OrthopedicsDIAGNOSTIC PERFORMANCE OF CONE-BEAM COMPUTED TOMOGRAPHY TO DIAGNOSE IN VIVO/IN VITRO ROOT RESORPTION: A SYSTEMATIC REVIEW AND META-ANALYSIS
2023, Journal of Evidence-Based Dental PracticeCitation Excerpt :For this new concept to be implemented, evidence-based clinical trials are necessary to specify the optimal image quality for a diagnosis, as well as the exposure and radiation dose necessary to meet the main objectives. As a summery, from a clinical illustrative perspective, we should keep in mind that considering a 0.20 voxel size, around 2.46 to 3.11 mm3 would be the smallest ERR lesion that could be detectable with 115-206 μSv (child-adult) of radiation dose, with a sensitivity of 60.8% and a specificity of 60% using a CBCT.36 We would need more RCT´s to demonstrate what is the minimum radiation dose necessary to diagnose the minimum ERR with the highest possible resolution.
Comparative analysis of panoramic radiography and cone-beam computed tomography in treatment planning of palatally displaced canines
2020, American Journal of Orthodontics and Dentofacial OrthopedicsAssociation between palatally displaced maxillary central incisors and lateral incisors: A retrospective cone-beam computed tomographic study
2019, American Journal of Orthodontics and Dentofacial Orthopedics
The authors report no commercial, proprietary, or financial interest in the products or companies described in this article.
The research leading to these results received funding from the European Atomic Energy Community’s Seventh Framework Program FP7/2007-2011 under grant agreement no 212246 (SEDENTEXCT: Safety and Efficacy of a New and Emerging Dental X-ray Modality).
- e
Listing of partners on www.sedentexct.eu.