Theory of X-ray microcomputed tomography in dental research: application for the caries research

Park, Young Seok; Bae, Kwang‐Hak; Chang, Jinhwa; Shon, Won‐Jun

doi:10.5395/jkacd.2011.36.2.98

Cited by 11 publications

(9 citation statements)

References 70 publications

(100 reference statements)

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“…Actually, this kind of studies, which deal with the defining the 3 dimensional region of the caries lesion, are now being actively performed by various research groups using X-ray microcomputed tomography instead of CBCT. 65 …”

Section: Resultsmentioning

confidence: 99%

Current status of dental caries diagnosis using cone beam computed tomography

et al. 2011

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PurposeThe purpose of this article is to review the current status of dental caries diagnosis using cone beam computed tomography (CBCT).Materials and MethodsAn online PubMed search was performed to identify studies on caries research using CBCT.ResultsDespite its usefulness, there were inherent limitations in the detection of caries lesions through conventional radiograph mainly due to the two-dimensional (2D) representation of caries lesions. Several efforts were made to investigate the three-dimensional (3D) image of lesion, only to gain little popularity. Recently, CBCT was introduced and has been used for diagnosis of caries in several reports. Some of them maintained the superiority of CBCT systems, however it is still under controversies.ConclusionThe CBCT systems are promising, however they should not be considered as a primary choice of caries diagnosis in everyday practice yet. Further studies under more standardized condition should be performed in the near future.

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Section: Resultsmentioning

confidence: 99%

Current status of dental caries diagnosis using cone beam computed tomography

et al. 2011

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“…Numerous studies have employed microCT as a ground truth caries validation tool for the purpose of caries detection. 39,50 MicroCT has also been shown to agree with transverse microradiography, another accepted gold-standard technique for the evaluation of caries. 51 The selection of 70 kVp tube potential and system calibration efforts in this study's microCT analysis are well supported by the literature.…”

Section: Discussionmentioning

confidence: 97%

“…A power calculation for receiver operating characteristic (ROC) analysis provided an estimated sample size of 51 surfaces for this "paired-case, pairedreader" study design. [37][38][39] A dry human mandible served as the ex vivo phantom for this study. Extracted teeth were held in residual extraction sockets with wax.…”

Section: Methodsmentioning

confidence: 99%

Ex vivoevaluation of new 2D and 3D dental radiographic technology for detecting caries

Gaalaas¹,

Tyndall²,

Mol³

et al. 2016

Dentomaxillofacial Radiology

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Objectives: Proximal dental caries remains a prevalent disease with only modest detection rates by current diagnostic systems. Many new systems are available without controlled validation of diagnostic efficacy. The objective of this study was to evaluate the diagnostic efficacy of three potentially promising new imaging systems. Methods: This study evaluated the caries detection efficacy of Schick 33 (Sirona Dental, Salzburg, Austria) intraoral digital detector images employing an advanced sharpening filter, Planmeca ProMax ® (Planmeca Inc., Helsinki, Finland) extraoral "panoramic bitewing" images and Sirona Orthophos XG3D (Sirona Dental) CBCT images with advanced artefact reduction. Conventional photostimulable phosphor images served as the control modality. An ex vivo study design using extracted human teeth, ten expert observers and micro-CT ground truth was employed. Results: Receiver operating characteristic analysis indicated similar diagnostic efficacy of all systems (ANOVA p . 0.05). The sensitivity of the Schick 33 images (0.48) was significantly lower than the other modalities (0.53-0.62). The specificity of the Planmeca images (0.86) was significantly lower than Schick 33 (0.96) and XG3D (0.97). The XG3D showed significantly better cavitation detection sensitivity (0.62) than the other modalities (0.48-0.57). Conclusions:The Schick 33 images demonstrated reduced caries sensitivity, whereas the Planmeca panoramic bitewing images demonstrated reduced specificity. XG3D with artefact reduction demonstrated elevated sensitivity and specificity for caries detection, improved depth accuracy and substantially improved cavitation detection. Care must be taken to recognize potential false-positive caries lesions with Planmeca panoramic bitewing images. Use of CBCT for caries detection must be carefully balanced with the presence of metal artefacts, time commitment, financial cost and radiation dose.

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“…It can be categorized into geometric parameters (length, area and volume) and densitometric parameters (tissue mass and density). The basis for two-dimensional radiographic densitometric measurement is that the X-ray attenuation increases with the density of the material for a given thickness 13. The radiographic density is a measure of degree of image darkening and is expressed as grey level numeric values (intensity from 0 - 255).…”

Section: Discussionmentioning

confidence: 99%

Comparative efficacy of photo-activated disinfection and calcium hydroxide for disinfection of remaining carious dentin in deep cavities: a clinical study

2014

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ObjectivesTo comparatively evaluate the efficacy of photo-activated disinfection (PAD), calcium hydroxide (CH) and their combination on the treatment outcome of indirect pulp treatment (IPT).Materials and MethodsInstitutional ethical clearance and informed consent of the patients were taken. The study was also registered with clinical registry of India. Sixty permanent molars exhibiting deep occlusal carious lesion in patients with the age range of 18 - 22 yr were included. Clinical and radiographic evaluation and set inclusion and exclusion criteria's were followed. Gross caries excavation was accomplished. In group I (n = 20) PAD was applied for sixty seconds. In group II (n = 20), CH was applied to the remaining carious dentin, while in group III (n = 20), PAD application was followed by CH placement. The teeth were permanently restored. They were clinically and radiographically followed-up at 45 day, 6 mon and 12 mon. Relative density of the remaining affected dentin was measured by 'Radiovisiography (RVG) densitometric' analysis.ResultsSuccessful outcome with an increase in radiographic grey values were observed in all three groups. However, on inter-group comparison, this change was not significant (p > 0.05).ConclusionsPAD and CH both have equal disinfection efficacy in the treatment of deep carious dentin. PAD alone is as effective for treatment of deep carious lesion as calcium hydroxide and hence can be used as an alternative to CH. They can be used independently in IPT, since combining both does not offer any additional therapeutic benefits.

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Theory of X-ray microcomputed tomography in dental research: application for the caries research

Cited by 11 publications

References 70 publications

Current status of dental caries diagnosis using cone beam computed tomography

Current status of dental caries diagnosis using cone beam computed tomography

Ex vivoevaluation of new 2D and 3D dental radiographic technology for detecting caries

Comparative efficacy of photo-activated disinfection and calcium hydroxide for disinfection of remaining carious dentin in deep cavities: a clinical study

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