Vertical bone volume in the paramedian palate of adolescents: A computed tomography study

King, Keith; Lam, Ernest W.N.; Faulkner, M.G.; Heo, Giseon; Major, Paul W.

doi:10.1016/j.ajodo.2005.11.042

Cited by 85 publications

(69 citation statements)

References 11 publications

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“…There must be sufficient bone thickness to receive the functional part of the miniscrew, ranging from 6 to 12 mm in length, without perforating the nasal cavity. [2][3][4]7,[14][15][16][17] The limited availability of palatal bone height was the reason for the development of special short palatal implants for orthodontic anchorage (3 to 6 mm long). 14 Nowadays conventional miniscrews can be used if the local anatomy is known.…”

Section: Discussionmentioning

confidence: 99%

“…12,13 In addition to knowing the cortical bone thickness in this region, it is necessary to know the total bone thickness in order to choose the appropriate mini-implant length to avoid perforations in the nasal cavity floor. [2][3][4]7,[14][15][16][17] Knowledge of soft tissue thickness also helps in determining the overall implant length 18 and implant collar height. 19 Clinical examination, panoramic and cephalometric radiographs have limitations when assessing the amount of bone tissue in the palate.…”

mentioning

confidence: 99%

“…The palate is probably the most favorable area for miniscrew placement because there is easy access, low risk of damaging important anatomical structures and there is attached keratinized tissue along its entire length. [2][3][4][5][6] Moreover, mini-implants placed in these regions have the advantage of not interfering in the tooth movement. 7 This area is chosen for placing mini-implants when forward or backward movements of posterior teeth are required, 8 intrusion of maxillary teeth 9,10 or traction of impacted maxillary teeth.…”

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confidence: 99%

“…14 Recent studies have shown that computed tomography is a good method to evaluate the bone site most suitable for mini-implant placement 2,4,15 since there is no distortion and superimposition of images. Cone-beam computed tomography (CBCT) is also a good tool to evaluate soft tissue thickness.…”

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confidence: 99%

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Tomographic mapping of the hard palate and overlying mucosa

et al. 2012

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The aim of this study was to measure the thickness of the hard palate and its overlying mucosa using cone-beam computed tomography (CBCT), for purposes of miniscrew placement. The sample comprised 36 CBCT scans of patients aged 12 to 52 years from a database of the Orthodontics Department of the Federal University of Rio de Janeiro. Paracoronal views of the palatal region were reconstructed at 4, 8, 16 and 24 mm posterior to the incisive foramen. In each reconstruction measurements were taken at the suture, 3 mm and 6 mm bilaterally to it. Wilcoxon's test verified the differences between the selected regions. Total bone height decreased from the anterior to the posterior region. In cross sections 4, 16 and 24, bone height decreased from the suture laterally to the 3 mm region and then increased in the 6 mm region. The cortical thickness does not seem to be a concern because it presented a mean thickness of at least 1 mm at all sites evaluated. The measurements of the mucosa thickness decreased from lateral to median and from anterior to posterior regions. The most suitable areas for miniscrew placement in the palate are located 4 mm posterior to the incisive foramen, in the median or paramedian regions 3 mm adjacent to the suture.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Tomographic mapping of the hard palate and overlying mucosa

et al. 2012

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“…The current standard of care for overlay-free imaging in orthodontics is conventional CT. 41 Low-cost office-based CBCT imaging has recently been explored for orthodontic applications, including assessment of palatal bone thickness, skeletal growth patterns, dental age estimation, upper airway evaluation, and visualization of impacted teeth. [42][43][44][45][46][47] Although preliminary results are encouraging, established cross-sectional techniques such as conventional CT provide superior image quality of dental and surrounding structures for advanced orthodontic treatment planning. 41 Low dosing requirements appear to remain a benefit of CBCT when compared with conventional CT, with a routine orthodontic CBCT study delivering an effective dose of Յ61.1 Sv compared with 429.7 Sv for multisection CT. 48 Lateral cephalograms deliver 10.4 Sv in comparison, though without the benefit of 3D structural visualization.…”

Section: Orthodonticsmentioning

confidence: 99%

Conebeam CT of the Head and Neck, Part 2: Clinical Applications

Miracle¹,

Mukherji²

2009

AJNR Am J Neuroradiol

301

207

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SUMMARY: Conebeam x-ray CT (CBCT) is being increasingly used for point-of-service head and neck and dentomaxillofacial imaging. This technique provides relatively high isotropic spatial resolution of osseous structures with a reduced radiation dose compared with conventional CT scans. In this second installment in a 2-part review, the clinical applications in the dentomaxillofacial and head and neck regions will be explored, with particular emphasis on diagnostic imaging of the sinuses, temporal bone, and craniofacial structures. Several controversies surrounding the emergence of CBCT technology will also be addressed. C onebeam CT (CBCT) is an advancement in CT imagingthat has begun to emerge as a potentially low-dose crosssectional technique for visualizing bony structures in the head and neck. The physical principles, image quality parameters, and technical limitations relevant to CBCT imaging were discussed in Part 1 of this 2-part series. The second part presented here will highlight the evidence related to CBCT applications in head and neck as well as dentomaxillofacial imaging. Controversial aspects of this technology will also be addressed, including limitations in image quality and its often officebased operational model.CBCT was first adapted for potential clinical use in 1982 at the Mayo Clinic Biodynamics Research Laboratory. 1 Initial interest focused primarily on applications in angiography in which soft-tissue resolution could be sacrificed in favor of high temporal and spatial-resolving capabilities. Since that time, several CBCT systems have been developed for use both in the interventional suite and for general applications in CT angiography. 2,3 Exploration of CBCT technologies for use in radiation therapy guidance began in 1992, 4,5 followed by integration of the first CBCT imaging system into the gantry of a linear accelerator in 1999. 6 The first CBCT system became commercially available for dentomaxillofacial imaging in 2001 (NewTom QR DVT 9000; Quantitative Radiology, Verona, Italy). Comparatively low dosing requirements and a relatively compact design have also led to intense interest in surgical planning and intraoperative CBCT applications, particularly in the head and neck but also in spinal, thoracic, abdominal, and orthopedic procedures. [7][8][9][10][11] Diagnostic applications in CT mammography and head and neck imaging are also under evaluation. 12-14 The technical and clinical considerations pertaining to CBCT imaging in many of these applications have been the subjects of several recent reviews. [15][16][17][18][19] The recent review by Dörfler et al 16 of the neurointerventional applications of CBCT is of particular interest to the field of neuroradiology.The discussion below will focus on the diagnostic and treatment-planning applications of CBCT in dentomaxillofacial and head and neck imaging. Commercially available CBCT systems for dentomaxillofacial imaging include the CB MercuRay and CB Throne (Hitachi Medical, Kashiwi-shi, Chiba-ken, Japan), 3D Accuitomo products (J. Mor...

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Contemporary Concepts of Cone Beam Computed Tomography in Orthodontics

Kapila

2014

Cone Beam Computed Tomography in Orthodontics: Indications, Insights, and Innovations

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Vertical bone volume in the paramedian palate of adolescents: A computed tomography study

Cited by 85 publications

References 11 publications

Tomographic mapping of the hard palate and overlying mucosa

Tomographic mapping of the hard palate and overlying mucosa

Conebeam CT of the Head and Neck, Part 2: Clinical Applications

Contemporary Concepts of Cone Beam Computed Tomography in Orthodontics

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