Dentale Röntgendiagnostik mit der Panoramaschichtaufnahme – Technik und typische Bildbefunde

Hingst, V.; Weber, Marc‐André

doi:10.1007/s00117-019-00620-1

Cited by 9 publications

(8 citation statements)

References 11 publications

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“…In general, this raises the question of whether LD-CBCT has the potential to replace panoramic views in periodontology in the long term. Reviews have proven the benefits of CBCT in periodontology [26,27]. Studies using older devices showed that, in an ex vivo setting similar to that in the present study, horizontal bone resorption can be more reliably visualized with CBCT than with dental films [17].…”

Section: Discussionsupporting

confidence: 70%

Low-dose CBCT imaging of alveolar buccal bone adjacent to mandibular anterior teeth— a pilot study

et al. 2022

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Objectives Accurate description of buccal bone adjacent to mandibular anterior teeth is helpful for planning and monitoring periodontal and orthodontic treatment. Low-dose cone beam computed tomography (LD-CBCT) imaging has shown promising results for very small dental structures in animals. This study asserts that LD-CBCT is sufficiently accurate to measure buccal alveolar bone adjacent to human mandibular anterior teeth. Materials and methods Buccal bone level adjacent to 16 mandibular anterior teeth from four human cadavers was measured radiographically using one high-dose (HD) CBCT protocol and two LD-CBCT protocols. The resulting radiographic measurements of buccal bone height (bl) and thickness (bt) were compared with reference probe and reflected-light microscopy measurements. Measurement medians and Bland–Altman plots were calculated, and a linear mixed model was used to compare raters and imaging modalities. Results All regression coefficients were approximately 0, indicating high interrater, intrarater, and intermodality agreement. No significant differences were found between reference measurements and CBCT protocols. The mean differences for bl measurements were 0.07 mm (rater 1 [r1]) and 0.12 mm (rater 2 [r2]) for HD-CBCT; 0.07 mm (r1) and 0.13 mm (r2) for LD-CBCT-1; and 0.02 mm (r1) and 0.01 mm (r2) for LD-CBCT-2. For bt measurements, mean differences were 0.02 mm (r1) and 0.02 mm (r2) for HD-CBCT; 0.01 mm (r1) and 0.01 mm (r2) for LD-CBCT-1; and 0.00 mm (r1) and 0.01 mm (r2) for LD-CBCT-2. Conclusions Within the limitations of the present study, LD-CBCT seems to be a precise method for describing buccal bone and its thickness adjacent to mandibular anterior teeth in this experimental setting. Clinical relevance For the first time, this study showed LD-CBCT produces excellent results and is a reliable modality for imaging buccal bone in vitro. If clinical studies confirm these results, LD-CBCT could enable better treatment planning and monitoring at a radiation dose that is far lower than that of conventional HD-CBCT but similar to that of panoramic views.

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Section: Discussionsupporting

confidence: 70%

Low-dose CBCT imaging of alveolar buccal bone adjacent to mandibular anterior teeth— a pilot study

et al. 2022

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“…Manufacturer-dependent, these low-dose (LD)-CBCT protocols can reduce the dose-area product (DAP) by up to 90% compared with HD-CBCT protocols from the same device 8 , 9 . These DAPs are similar to those of a panoramic radiograph and, in some cases, are even lower than the radiation dose of a full-mouth status 10 . However, lowering the radiation dose can reduce image quality.…”

Section: Introductionsupporting

confidence: 54%

“…Slightly higher doses were used in earlier studies 13 . For example, digital panoramic views use a DAP of 28 mGy cm 2 , whereas analogue panoramic views use about 88 mGy cm 2 , both of which are higher than the dose used in our LD-CBCT protocol 10 . Another problem with these techniques is that they only represent two dimensions.…”

Section: Discussionmentioning

confidence: 88%

“…Another problem with these techniques is that they only represent two dimensions. A full mouth status with digital technology has a DAP of approximately 67 mGy cm 2 , which is within the range used in CBCT, but only represents the structures in two dimensions 10 . This suggests that LD-CBCT could replace the panoramic radiograph in periodontology.…”

Section: Discussionmentioning

confidence: 99%

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Imaging furcation defects with low-dose cone beam computed tomography

Ruetters

Gehrig

Kim

et al. 2022

Sci Rep

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Different cone beam computed tomography (CBCT) protocols have shown promising results for imaging furcation defects. This study evaluates the suitability of low-dose (LD)-CBCT for this purpose. Fifty-nine furcation defects of nine upper and 16 lower molars in six human cadavers were measured by a high-dose (HD)-CBCT protocol, a LD-CBCT protocol, and a surgical protocol. HD-CBCT and LD-CBCT measurements were made twice by two investigators and were compared with the intrasurgical measurements, which served as the reference. Furcation defect volumes generated from HD-CBCT and LD-CBCT imaging were segmented by one rater. Cohen’s kappa and intraclass correlation coefficient (ICC) values were calculated to determine intra- and interrater reliability. The level of significance was set at α = 0.05. In total, 59 furcation defects of nine upper and 16 lower human molars were assessed. Comparing CBCT furcation defect measurements with surgical measurements revealed a Cohen’s kappa of 0.5975 (HD-and LD-CBCT), indicating moderate agreement. All furcation defects identified by HD-CBCT were also detected by LD-CBCT by both raters, resulting in a Cohen’s kappa of 1. For interrater agreement, linear furcation defect measurements showed an ICC of 0.992 for HD-CBCT and 0.987 for LD-CBCT. The intrarater agreement was 0.994(r1)/0.992(r2) for HD-CBCT and 0.987(r1)/0.991(r2) for LD-CBCT. The intermodality agreement was 0.988(r1)/0.991(r2). Paired t-test showed no significant differences between HD-CBCT and LD-CBCT measurements. LD-CBCT is a precise and reliable method for detecting and measuring furcation defects in mandibular and maxillary molars in this experimental setting. It has the potential to improve treatment planning and treatment monitoring with a far lower radiation dose than conventional HD-CBCT.

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“…The low DAP of 47 mGy·cm² is only slightly higher than the one used for digital Panoramic views (28 mGy·cm²) but far lower compared to analog Panoramic views (88 mGy·cm²). 24 According to the manufacturer of the CBCT used in this study, the DAP of a lateral cephalometric image – acquired with one of these devices – is in the range of 22 to 26 mGy·cm². 25 Thus, a combination of a Panoramic view and a lateral Cephlompetric as often used in orthodontic routine can could result in a higher DAP compared to LD-CBCT.…”

Section: Discussionmentioning

confidence: 99%

Ex-vivo imaging of buccal and oral periodontal bone with low-dose CBCT in porcine jaws

Ruetters

Gehrig

Kronsteiner

et al. 2022

Dentomaxillofacial Radiology

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Objectives: New CBCT devices have been developed which can provide “low-dose CBCTs (LD-CBCT)”. Aim of this study is to investigate the suitability of LD-CBCT for measurement of alveolar buccal/oral bone. Methods and materials: Vestibular and oral bone loss of the teeth of seven porcine mandibles free of soft tissues were investigated by Micro-CT and three CBCT-modes: high-dose (HD), standard-dose (SD) and low-dose (LD). Radiographic measurements of bone loss (bl) and vestibular and oral bone thickness (bt) were made by two raters at 69 sites. Measurement means and differences, Intraclass correlation (ICC) and Bland–Altman plots were calculated. Results: ICCs between raters(r) concerning bl were 0.954 for HD, 0.949 for SD and 0.945 for LD; concerning bt they were 0.872 for HD, 0.845 for SD and 0.783 for LD. Means of differences of bt measurements were −0.01 mm(r1)/0.00 mm(r2) for HD, 0.04 mm(r1)/0.02 mm(r2) for SD and 0.02 mm(r1)/0.04 mm(r2) for LD; for bl measurements they were 0.06 mm(r1)/0.05 mm(r2) for HD, −0.01 mm(r1)/0.13 mm(r2) for SD and 0.07 mm(r1)/0.16 mm(r2) for LD. Linear regression indicates no noticeable differences between methods and the raters with respect to bl and bt. Conclusions Relating to the CBCT-device used in this study, LD-CBCT is a promising method to detect and describe buccal and oral periodontal bl and bt. Further studies with human anatomic structures must confirm these results.

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Dentale Röntgendiagnostik mit der Panoramaschichtaufnahme – Technik und typische Bildbefunde

Cited by 9 publications

References 11 publications

Low-dose CBCT imaging of alveolar buccal bone adjacent to mandibular anterior teeth— a pilot study

Low-dose CBCT imaging of alveolar buccal bone adjacent to mandibular anterior teeth— a pilot study

Imaging furcation defects with low-dose cone beam computed tomography

Ex-vivo imaging of buccal and oral periodontal bone with low-dose CBCT in porcine jaws

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