Diagnosis of external root resorption in teeth close and distant to zirconium implants: influence of acquisition parameters and artefacts produced during cone beam computed tomography

D. Q. Freitas, E. H.L. Nascimento, T. V. Vasconcelos, Marcel E Noujeim

Research output: Contribution to journalArticle

Abstract

Aim: To assess the influence of artefacts, the metal artefact reduction (MAR) tool and kilovoltage (kVp) on the diagnosis of simulated external root resorption (ERR) in teeth close and distant to zirconium implants in cone beam computed tomography (CBCT) images. Methodology: Cavities (0.62 mm in diameter and 0.19 mm deep) were created in the apical thirds of 12 roots on the buccal, lingual, distal or mesial surface; ten roots served as controls. The roots were randomly positioned in the first and second right and left premolar sockets of a dry human mandible, and a zirconium implant was placed in the socket of the first right molar. A ProMax 3D unit varying kVp (70, 80, or 90 kVp) and with the MAR tool activated or not was used to obtain CBCT scans. Five examiners evaluated all images to determine the area under the receiver operating characteristic (ROC) curve, sensitivity and specificity. Results: The ROC values and sensitivity were not affected by MAR or artefacts regardless of the distance to the implant (P > 0.05), whilst increasing kVp from 70 to 90 led to a significant increase in these values (P = 0.0202 and 0.0199, respectively). Specificity was not affected by the factors studied (P > 0.05). Conclusions: Amongst the factors studied, only kVp influenced the diagnosis of simulated external root resorption in CBCT images. Increasing kVp from 70 to 90 improved the accuracy in diagnosing the simulated lesions.

Original languageEnglish (US)
JournalInternational Endodontic Journal
DOIs
StateAccepted/In press - Jan 1 2019

Fingerprint

Root Resorption
Cone-Beam Computed Tomography
Artifacts
Tooth
Metals
ROC Curve
Dry Socket
Cheek
Bicuspid
Mandible
Tongue
Sensitivity and Specificity

Keywords

  • artefacts
  • cone beam computed tomography
  • diagnosis
  • external root resorption

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Diagnosis of external root resorption in teeth close and distant to zirconium implants : influence of acquisition parameters and artefacts produced during cone beam computed tomography. / Freitas, D. Q.; Nascimento, E. H.L.; Vasconcelos, T. V.; Noujeim, Marcel E.

In: International Endodontic Journal, 01.01.2019.

Research output: Contribution to journalArticle

@article{e3d1b93eee0c4979871b1a493db37863,
title = "Diagnosis of external root resorption in teeth close and distant to zirconium implants: influence of acquisition parameters and artefacts produced during cone beam computed tomography",
abstract = "Aim: To assess the influence of artefacts, the metal artefact reduction (MAR) tool and kilovoltage (kVp) on the diagnosis of simulated external root resorption (ERR) in teeth close and distant to zirconium implants in cone beam computed tomography (CBCT) images. Methodology: Cavities (0.62 mm in diameter and 0.19 mm deep) were created in the apical thirds of 12 roots on the buccal, lingual, distal or mesial surface; ten roots served as controls. The roots were randomly positioned in the first and second right and left premolar sockets of a dry human mandible, and a zirconium implant was placed in the socket of the first right molar. A ProMax 3D unit varying kVp (70, 80, or 90 kVp) and with the MAR tool activated or not was used to obtain CBCT scans. Five examiners evaluated all images to determine the area under the receiver operating characteristic (ROC) curve, sensitivity and specificity. Results: The ROC values and sensitivity were not affected by MAR or artefacts regardless of the distance to the implant (P > 0.05), whilst increasing kVp from 70 to 90 led to a significant increase in these values (P = 0.0202 and 0.0199, respectively). Specificity was not affected by the factors studied (P > 0.05). Conclusions: Amongst the factors studied, only kVp influenced the diagnosis of simulated external root resorption in CBCT images. Increasing kVp from 70 to 90 improved the accuracy in diagnosing the simulated lesions.",
keywords = "artefacts, cone beam computed tomography, diagnosis, external root resorption",
author = "Freitas, {D. Q.} and Nascimento, {E. H.L.} and Vasconcelos, {T. V.} and Noujeim, {Marcel E}",
year = "2019",
month = "1",
day = "1",
doi = "10.1111/iej.13065",
language = "English (US)",
journal = "International Endodontic Journal",
issn = "0143-2885",
publisher = "Wiley-Blackwell",

}

TY - JOUR

T1 - Diagnosis of external root resorption in teeth close and distant to zirconium implants

T2 - influence of acquisition parameters and artefacts produced during cone beam computed tomography

AU - Freitas, D. Q.

AU - Nascimento, E. H.L.

AU - Vasconcelos, T. V.

AU - Noujeim, Marcel E

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Aim: To assess the influence of artefacts, the metal artefact reduction (MAR) tool and kilovoltage (kVp) on the diagnosis of simulated external root resorption (ERR) in teeth close and distant to zirconium implants in cone beam computed tomography (CBCT) images. Methodology: Cavities (0.62 mm in diameter and 0.19 mm deep) were created in the apical thirds of 12 roots on the buccal, lingual, distal or mesial surface; ten roots served as controls. The roots were randomly positioned in the first and second right and left premolar sockets of a dry human mandible, and a zirconium implant was placed in the socket of the first right molar. A ProMax 3D unit varying kVp (70, 80, or 90 kVp) and with the MAR tool activated or not was used to obtain CBCT scans. Five examiners evaluated all images to determine the area under the receiver operating characteristic (ROC) curve, sensitivity and specificity. Results: The ROC values and sensitivity were not affected by MAR or artefacts regardless of the distance to the implant (P > 0.05), whilst increasing kVp from 70 to 90 led to a significant increase in these values (P = 0.0202 and 0.0199, respectively). Specificity was not affected by the factors studied (P > 0.05). Conclusions: Amongst the factors studied, only kVp influenced the diagnosis of simulated external root resorption in CBCT images. Increasing kVp from 70 to 90 improved the accuracy in diagnosing the simulated lesions.

AB - Aim: To assess the influence of artefacts, the metal artefact reduction (MAR) tool and kilovoltage (kVp) on the diagnosis of simulated external root resorption (ERR) in teeth close and distant to zirconium implants in cone beam computed tomography (CBCT) images. Methodology: Cavities (0.62 mm in diameter and 0.19 mm deep) were created in the apical thirds of 12 roots on the buccal, lingual, distal or mesial surface; ten roots served as controls. The roots were randomly positioned in the first and second right and left premolar sockets of a dry human mandible, and a zirconium implant was placed in the socket of the first right molar. A ProMax 3D unit varying kVp (70, 80, or 90 kVp) and with the MAR tool activated or not was used to obtain CBCT scans. Five examiners evaluated all images to determine the area under the receiver operating characteristic (ROC) curve, sensitivity and specificity. Results: The ROC values and sensitivity were not affected by MAR or artefacts regardless of the distance to the implant (P > 0.05), whilst increasing kVp from 70 to 90 led to a significant increase in these values (P = 0.0202 and 0.0199, respectively). Specificity was not affected by the factors studied (P > 0.05). Conclusions: Amongst the factors studied, only kVp influenced the diagnosis of simulated external root resorption in CBCT images. Increasing kVp from 70 to 90 improved the accuracy in diagnosing the simulated lesions.

KW - artefacts

KW - cone beam computed tomography

KW - diagnosis

KW - external root resorption

UR - http://www.scopus.com/inward/record.url?scp=85059617272&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85059617272&partnerID=8YFLogxK

U2 - 10.1111/iej.13065

DO - 10.1111/iej.13065

M3 - Article

C2 - 30585641

AN - SCOPUS:85059617272

JO - International Endodontic Journal

JF - International Endodontic Journal

SN - 0143-2885

ER -