Diagnosis of Simulated External Root Resorption Using Conventional Intraoral Film Radiography, CCD, PSP, and CBCT: A Comparison Study

Shokri, Abbas; Mortazavi, Hamed; Salemi, Fatemeh; Javadian, Adineh; Bakhtiari, Hamidreza; Matlabi, Hooman

doi:10.4103/2319-4170.107156

Cited by 37 publications

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“…Three types of artificial ERR defects were created: slight (half the diameter of a V4 bur, 0.25 mm), moderate (0.5 mm), and severe (1 mm). Distances less than 1 mm between the impacted tooth crown and the adjacent root were considered as contact proximity [ 10 , 11 ]. The teeth were mounted and fixed in wax blocks such that the crown of the impacted tooth was in close contact with the resorbed area of the adjacent tooth.…”

Section: Methodsmentioning

confidence: 99%

Accuracy of High- and Low-Resolution Cone-Beam Computed Tomographic Scans in the Detection of Impacted Tooth-Induced External Root Resorption: An Ex-Vivo Study

Dabbaghi

Sharifi

Esmaeili

2020

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Objectives: Cone-beam computed tomography (CBCT) is used in diagnostic situations, as well as tooth impaction and its complications. A possible sequela of tooth impaction is resorption of adjacent teeth, complicating the treatment plans. This study aimed to determine the diagnostic accuracy of high- and low-resolution CBCT scans in the detection of external root resorptions (ERRs), caused by an adjacent impacted tooth in the cementoenamel junction (CEJ), mid-root, and apical areas. Materials and Methods: Forty-five intact single-rooted teeth were divided into three groups of 15. Each group was dedicated to each zone of the root. Slight, moderate, and severe ERRs were formed, and CBCT scans were taken before and after the formation of ERRs. The diagnostic accuracy was assessed, and the Proportion test was used to compare the results. Results: The statistical analyses of high- and low-resolution images showed a significant difference (P<0.05), which implies the higher accuracy of high-resolution images. The highest diagnostic accuracy among different zones was related to the mid-root, and the lowest was related to the apical zone. In terms of the size of ERRs, the diagnostic accuracy was the lowest for slight ERRs. Conclusion: The most reliable and accurate diagnostic mode was found in high-resolution images, in the mid-root zone, and with severe ERRs. The lowest diagnostic accuracy was found in low-resolution images, in the apical zone, and with slight ERRs.

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Section: Methodsmentioning

confidence: 99%

Accuracy of High- and Low-Resolution Cone-Beam Computed Tomographic Scans in the Detection of Impacted Tooth-Induced External Root Resorption: An Ex-Vivo Study

Dabbaghi

Sharifi

Esmaeili

2020

fid

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“…experimental cavities made in the apical, middle and cervical thirds of human teeth to simulate external root resorption (ERR). 5,6,7,8,9,10,11,12 Moreover, ex vivo studies have evaluated CT sections, 13 voxel size, 14,15,16,17,18,19,20 and field of view (FOV) 14,19,21 for the best characterization of the resorption cavities in the CBCT images. The use of CBCT for diagnosing post-traumatic ERR was first described by Cohenca et al, 22 but only two clinical studies have investigated the performance of CBCT for the diagnosis of ERR in traumatized teeth.…”

Section: Introductionmentioning

confidence: 99%

Imaging diagnosis of external root resorption in replanted permanent teeth

et al. 2020

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The present study aimed to evaluate the performance of cone beam computed tomography (CBCT) and digital periapical radiographs (PR) in diagnosing external root resorption (ERR) in human permanent teeth replanted after traumatic avulsion. The samples comprised 39 permanent maxillary incisors replanted after traumatic avulsion. Digital PR and CBCT images were taken from each tooth and independently examined by 2 calibrated examiners to assess the ERR activity regarding type and extension. The degrees of agreement between both imaging examinations were determined by the mean global agreement index using SPSS software. The two imaging examinations diverged greatly in the diagnosis of the type of ERR since CBCT identified more cases as inflammatory ERR and PR as replacement ERR. A discordance level of 69.2% was observed between the two methods in the diagnosis of the type of ERR when CBCT for mesial and distal (MD) surfaces was considered and 61.5% when CBCT for mesial, distal, buccal and lingual (MD/BL) was considered. Likewise, CBCT and PR differed regarding the ERR index. PR examinations classified most cases as moderate or severe (69.2%), while CBCT examinations classified more cases as mild either in the MD surfaces analysis (41.4%) or in the analysis of the MD-BL surfaces (51.3%). In conclusion, the present results highlight a discrepancy between CBCT and digital PR performance in the diagnosis of different types and extent of ERR in replanted teeth.

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“…CBCT has many applications and is used for making precise measurements, detecting the location of anatomical structures, evaluating airway abnormalities or asymmetry in maxillofacial bones, and analyzing endodontic or periodontal problems. 1 2 3 4 …”

Section: Introductionmentioning

confidence: 99%

Effect of field-of-view size on gray values derived from cone-beam computed tomography compared with the Hounsfield unit values from multidetector computed tomography scans

et al. 2018

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PurposeThis study aimed to evaluate the effect of field-of-view (FOV) size on the gray values derived from conebeam computed tomography (CBCT) compared with the Hounsfield unit values from multidetector computed tomography (MDCT) scans as the gold standard.Materials and MethodsA radiographic phantom was designed with 4 acrylic cylinders. One cylinder was filled with distilled water, and the other 3 were filled with 3 types of bone substitute: namely, Nanobone, Cenobone, and Cerabone. The phantom was scanned with 2 CBCT systems using 2 different FOV sizes, and 1 MDCT system was used as the gold standard. The mean gray values (MGVs) of each cylinder were calculated in each imaging protocol.ResultsIn both CBCT systems, significant differences were noted in the MGVs of all materials between the 2 FOV sizes (P<.05) except for Cerabone in the Cranex3D system. Significant differences were found in the MGVs of each material compared with the others in both FOV sizes for each CBCT system. No significant difference was seen between the Cranex3D CBCT system and the MDCT system in the MGVs of bone substitutes on images obtained with a small FOV.ConclusionThe size of the FOV significantly changed the MGVs of all bone substitutes, except for Cerabone in the Cranex3D system. Both CBCT systems had the ability to distinguish the 3 types of bone substitutes based on a comparison of their MGVs. The Cranex3D CBCT system used with a small FOV had a significant correlation with MDCT results.

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Diagnosis of Simulated External Root Resorption Using Conventional Intraoral Film Radiography, CCD, PSP, and CBCT: A Comparison Study

Abstract: CBCT was only useful for detection of cavities located in the apical one-third of the root, compared to other digital or conventional methods.

Cited by 37 publications

References 0 publications

Accuracy of High- and Low-Resolution Cone-Beam Computed Tomographic Scans in the Detection of Impacted Tooth-Induced External Root Resorption: An Ex-Vivo Study

Accuracy of High- and Low-Resolution Cone-Beam Computed Tomographic Scans in the Detection of Impacted Tooth-Induced External Root Resorption: An Ex-Vivo Study

Imaging diagnosis of external root resorption in replanted permanent teeth

Effect of field-of-view size on gray values derived from cone-beam computed tomography compared with the Hounsfield unit values from multidetector computed tomography scans

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