Influence of acquisition parameters on the evaluation of mandibular third molars through cone beam computed tomography

Melo, Larissa Pereira Lagos de; Nadaes, Mariana Rocha; Nejaim, Yuri; Neves, Frederico Sampaio; Oliveira, Matheus Lima; Freitas, Deborah Queiroz

doi:10.1016/j.oooo.2017.03.008

Cited by 18 publications

(11 citation statements)

References 32 publications

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“…Moreover, LD‐CBCT image quality was considered sufficient for various orthodontic diagnostics (Brown, Scarfe, Scheetz, Silveira, & Farman, ; Cook, Timock, Crowe, Wang, & Covell, ; Hidalgo Rivas, Horner, Thiruvenkatachari, Davies, & Theodorakou, ; Ludlow & Walker, ; Portelli et al, ), for tooth autotransplantation planning (EzEldeen et al, ), and for preimplant radiographic assessment (Liljeholm et al, ). Although no dedicated LD‐CBCT protocols have yet been tested, there is evidence from the field of endodontics and periodontology demonstrating acceptable image quality with reduced kV, mA, and exposure time (Al‐Okshi, Theodorakou, & Lindh, ; Jones, Mannocci, Andiappan, Brown, & Patel, ; Lagos de Melo et al, ). Finally, in a bovine rib model, diagnostic accuracy of three customized CBCT protocols were compared regarding peri‐implant fenestrations and deshiscences.…”

Section: Discussionmentioning

confidence: 99%

“…Most likely, these outliers are attributed to individual measurement errors (EzEldeen et al, 2017), and for preimplant radiographic assessment (Liljeholm et al, 2017). Although no dedicated LD-CBCT protocols have yet been tested, there is evidence from the field of endodontics and periodontology demonstrating acceptable image quality with reduced kV, mA, and exposure time (Al-Okshi, Theodorakou, & Lindh, 2017;Jones, Mannocci, Andiappan, Brown, & Patel, 2015;Lagos de Melo et al, 2017). Finally, in a bovine rib model, diagnostic accuracy of three customized CBCT protocols were compared regarding periimplant fenestrations and deshiscences.…”

Section: Discussionmentioning

confidence: 99%

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In vitro diagnostic accuracy of low‐dose CBCT for evaluation of peri‐implant bone lesions

Schwindling

Hilgenfeld

Weber

et al. 2019

Clinical Oral Implants Res

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Objectives To investigate the in vitro diagnostic accuracy of low‐dose cone‐beam computed tomography (LD‐CBCT) for the detection, classification, and measurement of peri‐implant bone lesions. Material and methods Titanium dental implants with all‐ceramic single crowns (n = 24) were inserted into bovine bone. At twelve implants, four types of peri‐implant bone lesions were created. Radiographic imaging was performed using three techniques: LD‐CBCT, high‐definition CBCT (HD‐CBCT), and intraoral radiography (IR). The datasets were presented twice to four observers in a random order. Diagnostic accuracy was measured by calculating sensitivity and specificity, and analyzed using the McNemar's test at a significance level of 0.05. Absolute agreement between the defect sizes was assessed by means of intraclass correlation coefficients (ICC). Results For all three techniques, diagnostic accuracy and reliability for the detection of defects were almost perfect. The following order was found for classification of the different defect types (sensitivity/specificity): HD‐CBCT (0.96/0.99) > LD‐CBCT (0.93/0.98) > IR (0.71/0.95). No significant difference was found between the two CBCT techniques. Their performance was superior to that of IR. With regard to absolute agreement of defect size, LD‐CBCT agreement with HD‐CBCT (ICC, 95% confidence interval) was slight for defect depth (0.342, 0.181–0.625) and substantial for defect width (0.911, 0.775–0.963). Conclusion Intraoral radiography is useful for detecting peri‐implant bone lesions. LD‐CBCT provides additional information regarding the geometry of defects. The even higher diagnostic accuracy of the HD‐CBCT protocol tested needs to be carefully weighed against its radiation dose, which is 14 times higher than that of LD‐CBCT.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

In vitro diagnostic accuracy of low‐dose CBCT for evaluation of peri‐implant bone lesions

Schwindling

Hilgenfeld

Weber

et al. 2019

Clinical Oral Implants Res

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“…Despite significant advances in the treatment of diseases in recent decades, no proper cure has been still found for some diseases such as cancer [1], [2], cardiovascular diseases [3], chronic pains [4], diabetes [5], autoimmune diseases [6], [7], AIDS [8], [9], and microbial infections [10], [11]. Some common microbial infections with bacterial origin are strongly annoying.…”

Section: Introductionmentioning

confidence: 99%

Optimisation of Cobalt Oxide Nanoparticles Synthesis as Bactericidal Agents

Moradpoor

Safaei

Rezaei

et al. 2019

Open Access Maced J Med Sci

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AIM: With the increased bacterial resistance and the resulting problems in recent years, it seems necessary to find new biocompatible compounds to confront this problem. This research was conducted to optimise the synthesis of cobalt oxide nanoparticles with the highest antibacterial activity. METHODS: In the present study, 9 experiments were designed using the Taguchi method. The effect of three factors of cobalt nitrate, KOH and the stirring time in the synthesis of cobalt oxide nanoparticles with the highest antibacterial activity was investigated. The bactericidal effect of synthesised nanoparticles was evaluated using the colony-forming unit (CFU) and disk diffusion methods. The characteristics of nanoparticles were studied using the Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and the scanning electron microscopy (SEM). RESULTS: The results indicated that all three evaluated factors were effective on the antibacterial properties of the synthesised nanoparticles. The best antibacterial activity of cobalt oxide nanoparticles was observed in experiment 9 (cobalt nitrate 0.6 M, KOH 2M and stirring time 60 min). The study of nanoparticles synthesised by FTIR, XRD, and SEM confirmed the formation of cobalt oxide nanoparticles with size (24 nm) and a proper structure (spinel structure). CONCLUSION: Due to the optimal antibacterial properties of the synthesised cobalt oxide nanoparticles, they can be used in the fabrication of dental and medical equipment with antibacterial properties.

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“…This strategy has met pre-established protocols for pre-surgical evaluation of third molars in this specific CBCT unit. 19 Nonetheless, it should be considered that the choice of the voxel size could interfere mainly in the cortical thinning evaluation, since images with larger voxels are more prone to the partial volume effect related to interpolation of data in a same slice. 20,21 Therefore, we believe that more studies might be delineated to investigate the influence of these parameters on JAR evaluation.…”

Section: Discussionmentioning

confidence: 99%

Comparison of panoramic radiography and cone beam CT in the assessment of juxta-apical radiolucency

Nascimento

Freire

Gaêta‐Araujo

et al. 2018

Dentomaxillofacial Radiology

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Influence of acquisition parameters on the evaluation of mandibular third molars through cone beam computed tomography

Cited by 18 publications

References 32 publications

In vitro diagnostic accuracy of low‐dose CBCT for evaluation of peri‐implant bone lesions

In vitro diagnostic accuracy of low‐dose CBCT for evaluation of peri‐implant bone lesions

Optimisation of Cobalt Oxide Nanoparticles Synthesis as Bactericidal Agents

Comparison of panoramic radiography and cone beam CT in the assessment of juxta-apical radiolucency

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