Clinical Application of a New Compact Computed Tomography System for Evaluating the Outcome of Regenerative Therapy: A Case Report

Ito, Koichi; Yoshinuma, Naoto; Yoshinuma, Eiji; Arai, Yoshinori; Sumii, Koji

doi:10.1902/jop.2001.72.5.696

Cited by 50 publications

(36 citation statements)

References 23 publications

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“…58,59 Periodontics The first reported applications of CBCT in periodontology were for diagnostic and treatment-outcome evaluations of periodontitis. 60 Ex vivo studies later characterized the ability of CBCT to accurately reconstruct periodontal intrabony and fenestration defects, dehiscences, and root furcation involvements in comparison with radiography, MDCT, and histologic measurements. [61][62][63][64][65] CBCT 3D geometric accuracy has been suggested to be equal to radiography and MDCT but with better observer-rated image quality than MDCT as well as superior periodontal-defect detection than radiography.…”

Section: Endodonticsmentioning

confidence: 99%

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

Miracle¹,

Mukherji²

2009

AJNR Am J Neuroradiol

300

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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Section: Endodonticsmentioning

confidence: 99%

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

Miracle¹,

Mukherji²

2009

AJNR Am J Neuroradiol

300

207

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“…These results were supported in a recent study in a clinical situation (Grimard et al 2009). A case report showed that regeneration of bone in a furcal defect could be more accurately monitored using CBCT compared to IR (Ito et al 2001b). …”

Section: Cone Beam Computed Tomography and Periodonticsmentioning

confidence: 99%

Clinical and radiographic evaluation of NobelActive^TM dental implants

Yeung

Zee

et al. 2011

Clinical Oral Implants Res

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Objectives To conduct a randomised controlled trial to evaluate the short‐term clinical and radiographic efficacy of the NobelActive™ system and to evaluate the relative importance of achieving primary stability at placement. Materials and methods A total of 32 subjects were recruited and, using a split‐mouth design, the NobelActiveTM implant was compared with a contralaterally matched Brånemark implant. Both implants were placed in a single surgical procedure into healed sites using a one‐stage protocol and reviewed at monthly intervals. NobelActiveTM implants were functionally loaded with provisional restorations at 1 month and all implants were restored with final crowns 3 months post‐implant placement. The implant was assessed using peak insertion torque values, resonance frequency analysis (RFA), clinical parameters, digital subtraction radiography, and cone beam computed tomography. Results The insertion torque was significantly greater for the NobelActiveTM implant group (P = 0.02), although no observable difference in RFA values were found. Preliminary results of 6 months follow‐up suggest comparable clinical and radiographic healing responses between the test and control implants. Within the limits of the sample population, the survival rates were lower with the test implants, although this difference was not statistically significant. Conclusions The NobelActiveTM implant system requires higher insertion torques and can also achieve greater primary stability compared with a control implant system. Short‐term survival and marginal bone levels of NobelActiveTM and control implants are comparable, although the NobelActiveTM implant system appeared to be more technique‐sensitive.

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“…The system is characterized by a high resolution (voxel size, 0.125 mm), quick operation (exposure time, 17 s), and a low effective dose (about 10 mSv/exposure.). [6][7][8][9][10][11] We report herein a newly developed m CT system that employs the method used for limited cone-beam CT in dentistry. Figure 1 shows an overview of the new m CT system.…”

Section: Introductionmentioning

confidence: 99%

Micro-computed tomography newly developed for in vivo small animal imaging

et al. 2005

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Objectives. The aim of this paper is to report a newly developed micro-computed tomography system for in vivo use. Methods. The system was composed of a micro-focus X-ray tube and an image intensifier (I.I.), both of which rotated around the object stage. A guinea pig and a rat were examined. The anesthetized animal was set on the secure object stage. Images of the head of the guinea pig and the tibia/ knee joint of the rat were taken. In addition, an image of the rat's tail was taken. The reconstruction and the image viewing were carried out using I-View software. Results. The voxel matrix was 512 ¥ 512 ¥ 384. The voxel sizes ranged from 10 ¥ 10 ¥ 10 mm to 100 ¥ 100 ¥ 100 mm. The exposure time was 17 s, and the reconstruction time was 150 s. The head of the guinea pig and the tibia/knee joint of the rat were observed clearly under 100-mm and 30-mm voxels, respectively. The trabecular bone of the tail was also observed clearly under a 10-mm voxel. Conclusions. The newly developed micro-computed tomography system makes it possible to obtain images of anesthetized animals set on a secure object stage. Clear bone images of the small animals could be obtained within a short time.

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Clinical Application of a New Compact Computed Tomography System for Evaluating the Outcome of Regenerative Therapy: A Case Report

Abstract: We consider that CT is a useful aid in periodontal examination and diagnosis, and in the prediction and evaluation of periodontal treatment outcomes.

Cited by 50 publications

References 23 publications

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

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

Clinical and radiographic evaluation of NobelActive^TM dental implants

Micro-computed tomography newly developed for in vivo small animal imaging

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Clinical Application of a New Compact Computed Tomography System for Evaluating the Outcome of Regenerative Therapy: A Case Report

Abstract: We consider that CT is a useful aid in periodontal examination and diagnosis, and in the prediction and evaluation of periodontal treatment outcomes.

Cited by 50 publications

References 23 publications

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

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

Clinical and radiographic evaluation of NobelActiveTM dental implants

Micro-computed tomography newly developed for in vivo small animal imaging

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Product

Resources

About

Clinical and radiographic evaluation of NobelActive^TM dental implants