Evaluation of two-dimensional and three-dimensional radiography with direct surgical assessment of periodontal osseous defects: a clinical study.
OBJECTIVE
To compare the diagnostic values of radiovisiograph (RVG) and computed tomography (CT) images in comparison with direct surgical measurements for the determination of periodontal bone loss.


METHODS
Thirty-one vertical defects were included for direct measurements during surgery with a periodontal probe. RVG and CT images were taken prior to the surgery. Similar measurements were done on their images and compared with the direct surgical values.


RESULTS
Mean difference (in mm) of RVG and CT scan in vertical defects, and intrabony component was 0.814, 0.474 and 0.073, 0.066 respectively. Intra class correlation of CT scan (0.997 and 0.990) was highest with the smallest length of 95% confidence interval. CT scan furthermore depicted maximum agreement with the surgical value. CT scan overestimated in the maximum percentage of sites in vertical defects. CT scan outscored over RVG in evaluation of the osseous defects.


CONCLUSIONS
CT scan demonstrated more precise and clinically useful images of the osseous defects closer to the gold standard.
Department of Periodontics and Oral Implantology, Maulana Azad Institute of Dental Sciences, New Delhi, India.
Priyanka
P
Pahwa
Arundeep Kaur
AK
Lamba
Harpreet
H
Grewal
Farrukh
F
Faraz
Shruti
S
Tandon
Neha
N
Yadav
D000328:Adult; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000601:surgery; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D010518:Periodontitis / Q000150:complications* / Q000000981:diagnostic imaging*; D019252:Radiography, Dental, Digital; D014057:Tomography, X-Ray Computed