TY - JOUR
T1 - Impact of cone beam CT on diagnosis of external cervical resorption: the severity of resorption assessed in periapical radiographs and cone beam CT. A prospective clinical study
AU - Villefrance, Julie Suhr
AU - Kirkevang, Lise-Lotte
AU - Wenzel, Ann
AU - Væth, Michael
AU - Matzen, Louise Hauge
PY - 2022/2
Y1 - 2022/2
N2 - Objectives: To compare the severity of external cervical resorption (ECR) observed in periapical (PA) images and cone beam CT (CBCT) using the Heithersay classification system and pulp involvement; and to assess inter- and intra observer reproducibility for three observers. Methods: CBCT examination was performed in 245 teeth (in 190 patients, mean age 40 years, range 12-82) with ECR diagnosed in PA images. Three observers scored the severity of ECR using the Heithersay classification system (severity class 1-4) and pulp involvement (yes/no) in both PA images and CBCT. Percentage concordance and κ-statistics described observer variation in PA images and CBCT for both inter- and intra observer reproducibility. Results: For all three observers, the ECR score was the same in the two modalities in more than half of cases (average 59%; obs1: 54%, obs2: 63%, obs3: 61%). However, in 38% (obs1: 44%, obs2: 33%, obs3: 36%) of the cases, the observers scored more severe ECR in CBCT than in PA images (p < 0.001). The ECR score changed to a less severe score in CBCT only in 3% (obs1: 1%, obs2: 4%, obs3: 4%). For pulp involvement, 14% (obs1: 7%, obs2: 20%, obs3: 15%) of the cases changed from "no" in PA images to "yes" in CBCT. In general, κ values were higher for CBCT than for PA images for both the Heithersay classification score and pulp involvement. Conclusions: ECR was generally scored as more severe in CBCT than PA images using the Heithersay classification and also more cases had pulp involvement in CBCT.
AB - Objectives: To compare the severity of external cervical resorption (ECR) observed in periapical (PA) images and cone beam CT (CBCT) using the Heithersay classification system and pulp involvement; and to assess inter- and intra observer reproducibility for three observers. Methods: CBCT examination was performed in 245 teeth (in 190 patients, mean age 40 years, range 12-82) with ECR diagnosed in PA images. Three observers scored the severity of ECR using the Heithersay classification system (severity class 1-4) and pulp involvement (yes/no) in both PA images and CBCT. Percentage concordance and κ-statistics described observer variation in PA images and CBCT for both inter- and intra observer reproducibility. Results: For all three observers, the ECR score was the same in the two modalities in more than half of cases (average 59%; obs1: 54%, obs2: 63%, obs3: 61%). However, in 38% (obs1: 44%, obs2: 33%, obs3: 36%) of the cases, the observers scored more severe ECR in CBCT than in PA images (p < 0.001). The ECR score changed to a less severe score in CBCT only in 3% (obs1: 1%, obs2: 4%, obs3: 4%). For pulp involvement, 14% (obs1: 7%, obs2: 20%, obs3: 15%) of the cases changed from "no" in PA images to "yes" in CBCT. In general, κ values were higher for CBCT than for PA images for both the Heithersay classification score and pulp involvement. Conclusions: ECR was generally scored as more severe in CBCT than PA images using the Heithersay classification and also more cases had pulp involvement in CBCT.
KW - Cone beam CT
KW - Diagnostic efficacy
KW - External cervical resorption
KW - Reproducibility of Results
KW - Prospective Studies
KW - Humans
KW - Middle Aged
KW - Cone-Beam Computed Tomography
KW - Young Adult
KW - Adolescent
KW - Aged, 80 and over
KW - Adult
KW - Aged
KW - Tooth
KW - Child
KW - Observer Variation
UR - https://www.scopus.com/pages/publications/85123814409
U2 - 10.1259/dmfr.20210279
DO - 10.1259/dmfr.20210279
M3 - Journal article
C2 - 34520244
SN - 0250-832X
VL - 51
JO - Dentomaxillofacial Radiology
JF - Dentomaxillofacial Radiology
IS - 2
M1 - 20210279
ER -