The effects of different restorative materials on the detection of approximal caries in cone-beam computed tomography scans with and without metal artifact reduction mode

Cebe, Fatma; Aktan, Ali; Özsevik, Abdül Semih; Çiftçi, Mehmet Ertuğrul; Surmelioglu, Hatice Derya Gursel

doi:10.1016/j.oooo.2016.11.008

Cited by 35 publications

(38 citation statements)

References 43 publications

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“…Similarly, other studies having metallic materials inside the FOV indicated that MAR was not effective for the reduction of the artefact appearance 3,27 and for the detection of root fracture, 28,29 peri-implant defects 30,31 and furcal perforations. 32 Conversely, others studies showed that the MAR is an effective algorithm for the improvement of subjective image quality, 33 detection of caries 13 and reduction of the voxel value variability. 4,[34][35][36] Importantly, none of these studies included metallic materials in the exomass.…”

Section: Discussionmentioning

confidence: 99%

“…[9][10][11][12] One of them is metal artefact reduction (MAR) that has been widely assessed for different diagnostic tasks when metallic objects are observed inside the FOV. [13][14][15][16][17] Importantly, the wide use of small FOVs in dentistry, associated with the presence of metallic materials, which are not always within the FOV, has raised a very common clinical condition to be investigated. Therefore, the aim of this study was to evaluate the effectiveness of MAR in CBCT when metallic objects are present in the exomass.…”

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confidence: 99%

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Are metal artefact reduction algorithms effective to correct cone beam CT artefacts arising from the exomass?

Candemil

Salmon

Freitas

et al. 2019

Dentomaxillofacial Radiology

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The aim of this study was to evaluate the effectiveness of metal artefact reduction (MAR) in cone beam CT (CBCT) artefacts arising from metallic objects in the exomass. A radiographic phantom composed of 16 polypropylene tubes filled with a homogeneous radiopaque solution was created. CBCT scans were obtained with two units: Picasso Trio (Vatech, South Korea) and ProMax (Planmeca, Finland). The phantom was centred in a 5 × 5 cm field-of-view (FOV) with titanium and CoCr inserts in the exomass. All scans were repeated after enabling MAR. Mean voxel values were obtained from the 16 tubes and standard deviation was calculated as a way of measuring voxel value variability. Mean values and voxel value variability were compared individually in the presence and absence of MAR by means of analysis of variance, followed by Tukey's test (α = 0.05). In the Picasso Trio, MAR significantly decreased mean voxel values (p ≤ 0.05) and increased voxel value variability (p > 0.05) in the presence of titanium. When CoCr was present, no statistical difference (p > 0.05) was observed. In the ProMax, MAR increased significantly mean voxel values (p ≤ 0.05) in the presence of titanium, and presented no significant difference (p > 0.05) for CoCr. Voxel value variability did not differ significantly (p > 0.05) for both materials. In conclusion, MAR was not effective to correct CBCT artefacts arising from metallic objects in the exomass in the two CBCT units used.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Are metal artefact reduction algorithms effective to correct cone beam CT artefacts arising from the exomass?

Candemil

Salmon

Freitas

et al. 2019

Dentomaxillofacial Radiology

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“…Likewise, Vasconcelos et al () reported an increase in artefact generation when evaluating the use of the MAR tool in filled canals. On the other hand, in studies using metallic materials such as implants (zirconia and titanium; Vasconcelos et al , Freitas et al ) and for evaluation of proximal caries in the presence of some materials with a high atomic number (Cebe et al ), the MAR tool was effective. Thus, it can be inferred that the MAR tool has a greater potential to correct artefacts generated by materials with a high atomic number, as suggested by Queiroz et al () when evaluating the impact of the use of the MAR tool in the presence of various dental materials, amongst them metallic alloys and gutta‐percha.…”

Section: Discussionmentioning

confidence: 99%

“…Another factor that can influence image quality is the voxel size, which can range from 0.085 to 0.4 mm, depending on the technical specifications of each CBCT apparatus (Rosen et al , Koç et al ). Although smaller voxel sizes act to improve the spatial resolution thus providing more detail in the image (Cebe et al ), a higher dose of radiation is necessary to generate high‐quality images (Venskutonis et al ). A previous study reported that larger voxels did not interfere in the diagnostic accuracy of fractured instruments detection (Ramos Brito et al ); therefore, a 0.2 mm voxel was used in the present study.…”

Section: Discussionmentioning

confidence: 99%

Use of the metal artefact reduction tool in the identification of fractured endodontic instruments in cone‐beam computed tomography

et al. 2019

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Aim To evaluate the influence of the metal artefact reduction (MAR) tool in the diagnosis of fractured instruments in root canals of extracted mandibular molars, with or without root canal fillings. Methodology The root canals of 31 mandibular molars were divided into four groups: (i) the control group, without root fillings; (ii) the fracture group, without fillings and with fractured files; (iii) the fill group, with root filling; and (iv) the fill/fracture group, root filled and with fractured files. The following instruments were used as fractured endodontic instruments: stainless steel hand files, NiTi reciprocating files and NiTi rotary files. Each tooth was inserted in a dry mandible to obtain cone‐beam computed tomography (CBCT) images using a CBCT OP300 3D Maxio (Instrumentarium Dental, Tuusula, Finland) and Picasso Trio (Vatech, Hwaseong, Republic of Korea), with and without application of the MAR tool. All images were evaluated by three radiologists for the presence or absence of fractured files on a 5‐point scale. The diagnostic accuracy (area under ROC curve) was calculated. Image noise was measured in regions of trabecular and cortical bone and soft tissue. The comparison between the ROC curve values with the MAR tool enabled or disabled was performed using a t‐test. A t‐test was also employed for comparing image noise when the MAR tool was enabled and disabled. The significance level was set at 5%. Results The use of the MAR tool did not influence the diagnostic accuracy for identifying fractured endodontic instruments in root canals with and without fillings in both CBCT systems (P > 0.05), nor did it influence the image noise (P > 0.05). Conclusions The MAR tool on these two devices did not increase the detection of fractured endodontic instruments and did not reduce image noise using extracted mandibular molars. Therefore, the MAR tool is not recommended for evaluation of fractured endodontic instruments in teeth with and without root fillings in mandibular molars.

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“…Based on a systemic literature review, guidelines for the application of the CBCT have been detailed in the SEDENTEXCT project in Europe. These guidelines don't suggest CBCT for caries identification and analysis principally in light of the higher radiation dosage included contrasted with different types of intraoral radiography [2,3,15,16,17,18].…”

Section: Discussionmentioning

confidence: 99%

Influence of Different Bioactive Tooth Colored Restorative Materials in Caries Detection Using Cone Beam Computed Tomography

Sakr¹,

Dakhli²

2018

IJDSR

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To ensure the diagnostic ability of CBCT for caries detection under different types of tooth colored restorative materials. Material and Methods: In the present study a total of 80 extracted carious permanent molar teeth were selected. Caries was classified as grade 3 according to International Caries Detection and Assessment System (ICDAS) criteria. Half of carious lesions were removed from 40 molars as Control specimens. Carious teeth were randomly assigned into two groups and each group was divided into four subgroups including: two carious and two non-carious as controlled group and all the teeth were filled with different bioactive restorative materials, then all the specimens were scanned with cone beam computed tomography (CBCT) using a Promax ® 3DMid CBCT device (Planmeca, Oy, Helsinki, Finland). Results: Caries was detected in all the carious specimens of all the groups except that group A2 was much less remarkable than other groups. In the control specimens (noncarious) of all the groups: No caries was detected .Conclusion: Although CBCT is an excellent tool for secondary caries detection under different types of restorative materials but it should not be used as a primary diagnostic tool on regular basis. If its use is a must, so, optimized low dose low resolution protocol is recommended.

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The effects of different restorative materials on the detection of approximal caries in cone-beam computed tomography scans with and without metal artifact reduction mode

Cited by 35 publications

References 43 publications

Are metal artefact reduction algorithms effective to correct cone beam CT artefacts arising from the exomass?

Are metal artefact reduction algorithms effective to correct cone beam CT artefacts arising from the exomass?

Use of the metal artefact reduction tool in the identification of fractured endodontic instruments in cone‐beam computed tomography

Influence of Different Bioactive Tooth Colored Restorative Materials in Caries Detection Using Cone Beam Computed Tomography

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