Contemporary Concepts of Cone Beam Computed Tomography in Orthodontics

Kapila, Sunil

doi:10.1002/9781118674888.ch1

Cited by 12 publications

(22 citation statements)

References 146 publications

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“…Table 1 provided the scanning parameters of the FS, ZS, and HZ modes of NewTom CBCT. The original image number corresponds to exposure time and the milliampere second (mAs) was the product of milliampere and exposure time [ 13 ]. Therefore, the differences among the three modes actually existed at: field of view, voxel size and radiographic exposure related parameters (KV, mA and exposure time).…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the differences among the three modes actually existed at: field of view, voxel size and radiographic exposure related parameters (KV, mA and exposure time). The field of view of the HZ and ZS modes were both small, and the FS was medium [ 13 ]. The kilovolt value of the three modes was the same.…”

Section: Resultsmentioning

confidence: 99%

“…Although CBCT can help clinicians to assess root canal morphology accurately, most previous studies have focused mainly on its use for determining the number of root canals [ 8 , 10 , 11 ]; few studies have examined its possibility for assessing the entire root canal system, including the tiny LACs. Moreover, images with higher resolution and sharpness are required when a more detailed root canal morphology evaluation is performed, and different scanning parameters could affect image quality significantly [ 12 , 13 ]. In this study, we aimed to fill the gap in the available information in this field by assessing the number of root canals, the Vertucci’s classification, and the LACs of the mandibular incisors, using CBCT at three different scanning settings in comparison with the canal staining and tooth clearing technique as the gold standard.…”

Section: Introductionmentioning

confidence: 99%

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Could cone-beam computed tomography demonstrate the lateral accessory canals?

et al. 2017

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BackgroundRecently, using cone-beam computed tomography (CBCT) to assess root canal morphology has become popular; however, few studies have examined its efficiency to assess the entire root canals, including the tiny lateral and accessory canals (LACs). This study aimed to assess the ability of CBCT to evaluate the root canal of mandibular incisors at three different scanning settings, compared with the canal staining and tooth clearing (CS) technique as the gold standard.MethodsCBCT images of 70 extracted mandibular incisors were taken using NewTom VG CBCT at high-resolution scan mode (HZ), zoom scan mode (ZS), and full scan mode (FS), with different scanning settings. A radiologist, a postgraduate student, and an endodontist assessed the root canal morphology in a blinded manner. The number of root canals (NC), canal configuration according to Vertucci’s classification (VC), and LACs were evaluated twice by each evaluator using the CBCT images, in comparison with CS. Comparisons of the differences were used the chi-square test, and the intra-evaluator and inter-evaluator agreement were used the Kappa statistics; the significance level was set at 0.05.ResultsThe voxel dimension of HZ, ZS and FS modes were 0.125 mm, 0.20 mm and 0.25 mm respectively, and the HZ mode had significant increased scanning doses. For NC, the diagnostic accuracy was >90% in all three modes, with no significant difference among the evaluators and modes. VC and LAC could only be evaluated in HZ mode. For VC, the accuracies were 97.1%, 94.3%, and 92.9% respectively, with no significant differences among the three evaluators. For LAC, the accuracies were 80.0%, 13.3%, and 33.3% respectively, and there were significant differences among the three evaluators. Intra-evaluator agreement was excellent, with the kappa values indicating “perfect” to “substantial” agreement. Inter-evaluator agreement was excellent for NC and VC; however, Kappa values could not be analyzed due to LACs detected were so variable.ConclusionsAs far as possible, the HZ mode should be chosen to demonstrate the root canal system, and partial LACs could be detected using this mode; however, the potential benefit of the diagnostic information must be weighed against the increased radiation dose.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Could cone-beam computed tomography demonstrate the lateral accessory canals?

et al. 2017

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“…16,17 When required, CBCT should be performed using the smallest possible field of view needed for the specific clinical scenario. 5 Finally, the comparison of CBCT radiation exposure with the combined exposure of cephalograms and panoramic radiographs to justify the routine use of CBCT on orthodontic patients is based on a paradigm that assumes that all orthodontic patients should be subjected to routine 2D radiography. Indeed the findings of the systematic reviews [13][14][15] suggest that these 2D radiographs should also only be taken when they are expected to provide additional information that could aid in diagnosis or treatment planning or for assessing progress or complications during treatment.…”

Section: Radiology Guidelines In Orthodonticsmentioning

confidence: 99%

“…In orthodontics, 3D imaging can help unravel the complexity of dental and skeletal malocclusions and improve diagnosis and treatment planning in specific case types. 4,5 The varied utilization of CBCT by clinicians for orthodontic purposes exists within the context of research evidence, published case reports or anecdotal observations on a broad spectrum of cases ranging from impacted teeth to temporomandibular joint (TMJ) morphology. Several of these studies show that CBCT provides clinically relevant information and novel 3D research data.…”

Section: Introductionmentioning

confidence: 99%

CBCT in orthodontics: assessment of treatment outcomes and indications for its use

Kapila

Nervina

2015

Dentomaxillofacial Radiology

305

222

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Since its introduction into dentistry in 1998, CBCT has become increasingly utilized for orthodontic diagnosis, treatment planning and research. The utilization of CBCT for these purposes has been facilitated by the relative advantages of three-dimensional (3D) over two-dimensional radiography. Despite many suggested indications of CBCT, scientific evidence that its utilization improves diagnosis and treatment plans or outcomes has only recently begun to emerge for some of these applications. This article provides a comprehensive and current review of key studies on the applications of CBCT in orthodontic therapy and for research to decipher treatment outcomes and 3D craniofacial anatomy. The current diagnostic and treatment planning indications for CBCT include impacted teeth, cleft lip and palate and skeletal discrepancies requiring surgical intervention. The use of CBCT in these and other situations such as root resorption, supernumerary teeth, temporomandibular joint (TMJ) pathology, asymmetries and alveolar boundary conditions should be justified on the basis of the merits relative to risks of imaging. CBCT has also been used to assess 3D craniofacial anatomy in health and disease and of treatment outcomes including that of root morphology and angulation; alveolar boundary conditions; maxillary transverse dimensions and maxillary expansion; airway morphology, vertical malocclusion and obstructive sleep apnoea; TMJ morphology and pathology contributing to malocclusion; and temporary anchorage devices. Finally, this article utilizes findings of these studies and current voids in knowledge to provide ideas for future research that could be beneficial for further optimizing the use of CBCT in research and the clinical practice of orthodontics.

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Die digitale Volumentomografie in der kieferorthopädischen Praxis

Nelson

2014

Informationen aus Orthodontie & Kieferorthopädie

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Zusammenfassung In diesem Beitrag werden die Einsatzm?glichkeiten der Volumentomografie in der kieferorthop?dischen Praxis erl?utert und auf die diagnostischen M?glichkeiten, die Strahlenbelastung f?r Patienten und auf Fragen der Haftung wird eingegangen. Des Weiteren wird ein ?berblick ?ber wichtige Forschungsergebnisse gegeben, von denen etliche in der Abteilung f?r Kieferorthop?die der Universit?t von Kalifornien in San Francisco (UCSF) durchgef?hrt wurden. Schlie?lich wird ein systematisches Verfahren zur Beurteilung eines Volumentomogramms vorgestellt.

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Contemporary Concepts of Cone Beam Computed Tomography in Orthodontics

Cited by 12 publications

References 146 publications

Could cone-beam computed tomography demonstrate the lateral accessory canals?

Could cone-beam computed tomography demonstrate the lateral accessory canals?

CBCT in orthodontics: assessment of treatment outcomes and indications for its use

Die digitale Volumentomografie in der kieferorthopädischen Praxis

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