Accuracy of mesiodistal root angulation projected by cone-beam computed tomographic panoramic-like images

Elslande, Dana Van; Heo, Giseon; Flores-Mir, Carlos; Carey, Jason P.; Major, Paul W.

doi:10.1016/j.ajodo.2009.02.028

Cited by 34 publications

(19 citation statements)

References 13 publications

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“…[52][53][54] By contrast, CBCT provides more accurate root angular measurements relative to those derived from 2D radiographs. [55][56][57] Nevertheless, given that panoramic radiographs provide adequate though not accurate information on root parallelism and the low benefit to risk of a progress CBCT, using CBCT for this purpose is not indicated. Root resorption is the occasional and undesirable sequelae of orthodontic treatment that may compromise the longevity of teeth.…”

Section: Utilization Of Cbct For Orthodontic Treatment Outcomes Diagmentioning

confidence: 99%

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

Kapila

Nervina

2015

Dentomaxillofacial Radiology

311

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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Section: Utilization Of Cbct For Orthodontic Treatment Outcomes Diagmentioning

confidence: 99%

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

Kapila

Nervina

2015

Dentomaxillofacial Radiology

311

222

View full text Add to dashboard Cite

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“…[18][19][20][21] In addition, prior studies have reported that radiographic techniques should be able to evaluate root angulations with an accuracy of 2.5 in either direction to be considered clinically acceptable; yet panoramic radiographs depict 53% to 73% of root angulations outside this clinically acceptable range. [19][20][21][22] Cone-beam computed tomography (CBCT) is another radiographic technique used to assess root position during orthodontic treatment. In contrast to panoramic radiographs, CBCT scans have been reported to accurately evaluate root positions in 3 dimensions and depict dentofacial structures in a 1:1 ratio.…”

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confidence: 99%

Accuracy and reliability of the expected root position setup methodology to evaluate root position during orthodontic treatment

Lee

Park

et al. 2018

American Journal of Orthodontics and Dentofacial Orthopedics

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Introduction: Current methods to evaluate root position either are inaccurate (panoramic radiograph) or expose patients to relatively large amounts of radiation (cone-beam computed tomography [CBCT]). A method to evaluate root position by generating an expected root position (ERP) setup was recently reported but has not been validated. The purpose of this study was to quantitatively assess the accuracy and reliability of the ERP setup with adequate statistical power. Methods: This retrospective study included 15 subjects who had completed phase 2 orthodontic treatment. An ERP setup was generated for all patients after treatment. The ERP setup was compared with the posttreatment CBCT scan, which served as the control. The mesiodistal angulation and buccolingual inclination of all teeth in both the ERP setup and the posttreatment CBCT scan were measured and compared. Bland-Altman analysis was used to assess interoperator reliability, intraoperator reliability, and agreement between the ERP setup and the posttreatment CBCT scan. Results: Bland-Altman plots showed high interoperator and intraoperator reliabilities. These plots also showed strong agreement between the ERP setup and the posttreatment CBCT scan; 11.8% of teeth measured for mesiodistal angulation and 9.6% of teeth measured for buccolingual inclination were outside the 62.5 range of clinical acceptability. Conclusions: We validated that the method to generate an ERP setup to evaluate root position for posttreatment orthodontic assessment is accurate and reliable.

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“…The results show that CT is the most accurate method for assessing dental angulation. 21,22 Thus, assessment of mesiodistal tooth angulations with panoramic radiograph should be approached with caution and reinforced by a thorough clinical examination of the dentition. 23 However, due to economic as well as biological reasons, CT should not be considered for clinical routine, but rather only for mesiodistal root angulations evaluation, before, during or after orthodontic treatment.…”

Section: Discussionmentioning

confidence: 99%

Influence of treatment including second molars on final and postretention molar angulation

Canuto

Freitas

et al. 2013

Dental Press J. Orthod.

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OBJECTIVE: Evaluate axial mesiodistal inclinations of the mandibular molars in orthodontically treated cases, analyzing whether inclusion of second mandibular molars in treatment mechanics has any influence on final and postretention molars angulations. METHODS: The sample comprised 150 panoramic radiographs of 50 patients. Patients were treated with extraction of four first premolars and divided into 2 groups: Group 1 comprised 25 subjects without inclusion of mandibular second molars during orthodontic treatment, whereas Group 2 comprised 25 subjects with inclusion of mandibular second molars. Panoramic radiographs at three observation times were evaluated: pretreatment, posttreatment and postretention. The statistical analysis included one-way analysis of variance (ANOVA) for intragroup evaluation and independent t-tests for intergroup comparisons. RESULTS: Intragroup analysis demonstrated significant uprighting of mandibular first and second molars during treatment in Group 2, which remained stable during the postretention stage. Intergroup comparison demonstrated that Group 2 presented first and second molars significantly more uprighted in relation to Group 1 in both post-treatment and postretention stages. CONCLUSIONS: It was concluded that inclusion of mandibular second molars in the orthodontic mechanics is relevant not only to correct the angulation of these teeth, but also to aid mandibular first molars uprighting.

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Accuracy of mesiodistal root angulation projected by cone-beam computed tomographic panoramic-like images

Cited by 34 publications

References 13 publications

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

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

Accuracy and reliability of the expected root position setup methodology to evaluate root position during orthodontic treatment

Influence of treatment including second molars on final and postretention molar angulation

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