Accuracy of Three Cone Beam Computed Tomography Systems in the Detection of Implant-Abutment Misfit

Carneiro, Vinícius Cavalcanti; Siqueira, Caique A.; Valentim, Flavia B.; Oliveira, Amanda L. E.; Oliveira, Matheus Lima; Azeredo, Rogério Albuquerque; de-Azevedo-Vaz, Sérgio Lins

doi:10.11607/ijp.6127

Cited by 5 publications

(3 citation statements)

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“…The lack of similar studies with such purpose precludes a direct comparison of results. However, a previous study demonstrated less blooming and, consequently, higher capability of detecting implant-abutment misfit on CBCT after B&C adjustment [11]. Some previous studies have demonstrated that the artefacts due to the presence of the implant impair the evaluation in case of dehiscence and fenestration, and that the overestimation of implant diameter may lead to an underestimation of buccal bone thickness [19][20][21][22][23].…”

Section: Discussionmentioning

confidence: 97%

“…Because the delineation between a dental implant and the surrounding bone may be faded, previous studies have demonstrated the positive influence of image brightness and contrast (B&C) adjustments on the dimensional representation of different high-density materials [11,12]; the visualization of such adjustments may vary amongst CBCT devices, depending on the severity of the artefact and the effective contrast resolution.…”

Section: Introductionmentioning

confidence: 99%

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Impact of the blooming artefact on dental implant dimensions in 13 cone-beam computed tomography devices

et al. 2021

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Background The purpose of this study was to objectively assess dimensional alteration (blooming artefact) on dental implant using 13 cone-beam computed tomography (CBCT) devices adjusted to device-specific scanning protocols and to assess whether subjective adjustment of brightness and contrast (B&C) could alter its visualization. Methods An anthropomorphic phantom containing a dental implant was scanned in 13 CBCT devices adjusted to three scanning protocols: medium-FOV standard resolution, small-FOV standard resolution, and small-FOV high resolution. The diameter of the implant was measured at five levels, averaged, and compared with those from a reference standard industrial CT image. B&C adjustments were performed and measurements were repeated. The intraclass correlation coefficient assessed the reliability of the measurements and general linear mixed models were applied for multiples comparisons at a 95% confidence interval. Results Implant diameter obtained from small-FOV high-resolution protocols in most CBCT devices was not significantly different when compared to that from the reference (p > 0.05). For standard protocols, significant dimensional alteration of the implant ranging from 23 to 34% (0.67 to 1.02 mm) was observed in 9 CBCT devices for small-FOV scanning (p < 0.05), and in 8 CBCT devices for medium-FOV scanning, implant dimensional alteration ranged significantly from 21 to 35% (0.62 to 1.04 mm). After B&C adjustments, dimensional alteration was reduced for several of the CBCT devices tested (p < 0.05). Conclusions The visualization of the implant dimensional alteration differed between CBCT devices and scanning protocols with an increase in diameter ranging from 0.27 to 1.04 mm. For most CBCT devices, B&C adjustments allowed to reduce visualization of implant blooming.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Impact of the blooming artefact on dental implant dimensions in 13 cone-beam computed tomography devices

et al. 2021

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“…4 Several studies have shown that dental implants, [5][6][7][8][9] gutta percha, 10 orthodontic brackets, 11 and metallic restorations 10 substantially degrade image quality as a result of the beam hardening phenomenon. 9 Artifacts hamper the assessment of anatomic structures and pathologic findings close to the material edges, as occurs with the evaluation of titanium dental implant surfaces, [12][13][14] adaptation of crown margins, 15 and assessment of teeth that have undergone endodontic treatment. 16,17 One of the available strategies for reducing these artifacts is the use of metal artifact reduction (MAR) algorithms.…”

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confidence: 99%

A quantitative analysis of metal artifact reduction algorithm performance in volume correction with 3 CBCT devices

Vasconcelos

Queiroz

Codari

et al. 2020

Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

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Objective. The aim of this study was to quantitatively assess the performance of metal artifact reduction (MAR) algorithms on the volume of metal cylinders, considering the influence of materials, positions, and fields of view (FOVs), by using 3 cone beam computed tomography (CBCT) devices (NewTom VGi evo, Picasso Trio, and ProMax 3-D Max). Study Design. Nine phantoms containing cylinders of amalgam, copperÀaluminum (CuAl) metal alloy, and titanium, combined in up to 3 positions, were scanned by using 2 different FOVs. MATLAB software was used to evaluate the differences between volumes before and after MAR application, and the possible interference of materials, positions, and FOVs. Wilcoxon's test and the Kruskal-Wallis test were used at a level of significance of 5%. Results. In general, images containing amalgam and CuAl showed a significant difference in volume before and after MAR application. However, no significant difference after MAR was observed (P > .05) relative to positions and FOVs. MAR had an impact on the cylinder volumes only in the NewTom VGi evo and ProMax 3-D Max scanners. Conclusions. The performance of MAR algorithms in volume correction of metal objects is dependent on the materials and the CBCT unit. (Oral Surg Oral Med Oral Pathol Oral Radiol 2020;000:1À8) Statement of Clinical Relevance This study confirmed the variability in MAR algorithm performance according to the tested CBCT devices and different types of materials, and the inaccurate performance of all of them compared to a gold standard measurement.

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Misfit detection in implant-supported prostheses of different compositions by periapical radiography and cone beam computed tomography: An in vitro study

de-Azevedo-Vaz

Araujo-Siqueira

Carneiro

et al. 2021

The Journal of Prosthetic Dentistry

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Accuracy of Three Cone Beam Computed Tomography Systems in the Detection of Implant-Abutment Misfit

Cited by 5 publications

References 0 publications

Impact of the blooming artefact on dental implant dimensions in 13 cone-beam computed tomography devices

Impact of the blooming artefact on dental implant dimensions in 13 cone-beam computed tomography devices

A quantitative analysis of metal artifact reduction algorithm performance in volume correction with 3 CBCT devices

Misfit detection in implant-supported prostheses of different compositions by periapical radiography and cone beam computed tomography: An in vitro study

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