Practical Applications of Cone-Beam Computed Tomography in Orthodontics

Mah, James; Huang, John; Choo, HyeRan

doi:10.14219/jada.archive.2010.0361

Cited by 131 publications

(89 citation statements)

References 39 publications

(31 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Moreover, cone-beam computed tomographic (CBCT) scans are considered the most appropriate images to evaluate the anatomic structures of patients for best diagnosis and treatment planning. 18,19 Considering that a malocclusion is a factor that could influence TMJ variation, the purpose of this study was to evaluate condylar morphology and concentricity in patients with Angle Class I and II malocclusion, using CBCT scans.…”

Section: Introductionmentioning

confidence: 99%

Tomographic evaluation of the temporomandibular joint in malocclusion subjects: condylar morphology and position

et al. 2016

View full text Add to dashboard Cite

The aim of this study was to investigate condyle concentricity and morphology, and their association with Class I and II malocclusions (Angle). The sample consisted of 49 individuals of both genders, between 11 and 35 years old, divided into two groups, G1: 26 patients with Class I malocclusion, and G2: 23 patients with Class II malocclusion, selected for orthodontic treatment. Evaluation of the condyle morphology and position was performed by the same previously calibrated examiner using cone-beam computed tomography (CBCT) images of the subjects. The CBCT scans were analyzed by means of a 3D program (Dolphin 11.5, Dolphin Imaging & Management Solutions, Chatsworth, CA, USA), with a 25% level of sensitivity. The images obtained from the coronal slices were employed for the condyle morphology analysis, which classified the condyle form as rounded, as flat or convex, and as triangular or angled. The sagittal slices were used to classify further the condyles as concentric and displaced anteriorly or posteriorly. A clinical examination was also performed, including TMJ and muscle palpation. The kappa test was used to evaluate investigator calibration; the Chi-square and paired t-tests were used for analysis. The convex and anteriorly positioned condyles were found most frequently, regardless of the type of malocclusion. No association was observed between the groups regarding condylar characteristics.

show abstract

Section: Introductionmentioning

confidence: 99%

Tomographic evaluation of the temporomandibular joint in malocclusion subjects: condylar morphology and position

et al. 2016

View full text Add to dashboard Cite

show abstract

“…However, this fails to reveal dehiscence in palatal cortical bone attributed to surrounding bone superimposition (Mah et al, 2010). For this reason, three-dimensional (3D) evaluation is necessary, which could provide 3D displacements for dentoalveolar changes (Vannier, 2003;Nakasima et al, 2005;Garib et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional evaluation of upper anterior alveolar bone dehiscence after incisor retraction and intrusion in adult patients with bimaxillary protrusion malocclusion

Guo

Zhang

Liu

et al. 2011

J. Zhejiang Univ. Sci. B

View full text Add to dashboard Cite

Abstract:Objective: The purpose of this study was to evaluate three-dimensional (3D) dehiscence of upper anterior alveolar bone during incisor retraction and intrusion in adult patients with maximum anchorage. Methods: Twenty adult patients with bimaxillary dentoalveolar protrusion had the four first premolars extracted. Miniscrews were placed to provide maximum anchorage for upper incisor retraction and intrusion. A computed tomography (CT) scan was performed after placement of the miniscrews and treatment. The 3D reconstructions of pre-and post-CT data were used to assess the dehiscence of upper anterior alveolar bone. Results: The amounts of upper incisor retraction at the edge and apex were (7.64±1.68) and (3.91±2.10) mm, respectively, and (1.34±0.74) mm of upper central incisor intrusion. Upper alveolar bone height losses at labial alveolar ridge crest (LAC) and palatal alveolar ridge crest (PAC) were 0.543 and 2.612 mm, respectively, and the percentages were (6.49±3.54)% and (27.42±9.77)%, respectively. The shape deformations of LAC-labial cortex bending point (LBP) and PAC-palatal cortex bending point (PBP) were (15.37±5.20)° and (6.43±3.27)°, respectively. Conclusions: Thus, for adult patients with bimaxillary protrusion, mechanobiological response of anterior alveolus should be taken into account during incisor retraction and intrusion. Pursuit of maximum anchorage might lead to upper anterior alveolar bone loss.

show abstract

“…8 Cone beam computed tomography has entered the area of interest in many orthodontic and pediatric dentistry applications. [9][10][11] There are two main novelties that are introduced to clinical orthodontic practice with the emerging CBCT technology. The most striking advantage for the clinician is the possibility of viewing facial anatomic structures and the dentition in 3D from different angles.…”

Section: Radiologymentioning

confidence: 99%

Cone Beam Computed Tomography in Orthodontics

Di̇ndaroğlu

Yetkiner

2016

Turk J Orthod

View full text Add to dashboard Cite

The advent of three-dimensional (3D) imaging technology has caused a significant change in the diagnostic approach practiced in dentistry, and in particular, orthodontics. Although conventional imaging methods such as orthopantomography and lateral cephalometric and anteroposterior graphs provide sufficient information in mild to moderate orthodontic anomalies, 3D imaging can be a necessity in severe skeletal anomalies or tooth impactions. Computed tomography (CT) has been frequently used when detailed 3D imaging is necessary despite its relatively high cost, low vertical resolution, and high dose of radiation. In contrast to conventional CT application, the development of cone beam computed tomography (CBCT) technology has had important advantages over the conventional method, such as minimization of the radiation dose, image accuracy, rapid scan time, fewer image artifacts, chair-side image display, and real-time analysis. These advantages have provided dental practitioners the opportunity to benefit more frequently from 3D imaging by relatively diminishing radiation dose considerations, financial burden, and availability, in particular. Therefore, the aim of this review is to highlight the current understanding of CBCT practice in orthodontics and to summarize clinically relevant conditions. Keywords: Cone beam computed tomography, orthodontics, 3D imaging Orthodontics and Radiographic ImagingThe primary aim of orthodontic treatment, and in particular, dentofacial orthopedics, is the correction of malocclusions and facial discrepancies, which are related to dental and skeletal divergences. The treatment plan to achieve this aim is usually based on a patient's main complaint as well as the capabilities of orthodontics. Expected treatment outcomes have esthetic, psychosocial, and functional aspects. Differential diagnosis and treatment planning of such anomalies usually require detailed radiographic imaging of facial components. Conventional radiography and lateral cephalometric imaging, in particular, have formed the cornerstone of the diagnostic procedure for decades. 1 The limitations of such conventional techniques arising from the alteration of three-dimensional (3D) anatomy to two-dimensional images have been pronounced as one of the factors inducing treatment failure and relapse.2 These include magnification differences, geometric distortion, superimposition of anatomic structures, projective displacements of anatomic structures, rotational errors, and linear projective transformations.3 With the advent of computed tomography (CT), and more recently, cone beam computed tomography (CBCT), 3D imaging of the anatomy can be achieved, which enables the visualization of complex relations of adjacent tissues. 4 This has been enhanced with the development of computer software technology, which has enabled detailed assessment of these images for varying demands.

show abstract

Practical Applications of Cone-Beam Computed Tomography in Orthodontics

Cited by 131 publications

References 39 publications

Tomographic evaluation of the temporomandibular joint in malocclusion subjects: condylar morphology and position

Tomographic evaluation of the temporomandibular joint in malocclusion subjects: condylar morphology and position

Three-dimensional evaluation of upper anterior alveolar bone dehiscence after incisor retraction and intrusion in adult patients with bimaxillary protrusion malocclusion

Cone Beam Computed Tomography in Orthodontics

Contact Info

Product

Resources

About