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The ability of cone-beam computed tomography to detect simulated buccal and lingual recesses in root canals.

Abstract：

AIM:To compare the ability of cone-beam computed tomography (CBCT) and digital periapical radiographs (PR) to detect simulated tissue-occupied recesses in root canals. METHODOLOGY:A standard canal was created in 30 extracted mandibular premolar roots. Each root was longitudinally split into buccal and lingual halves. In 20 teeth, a standard groove, 4mm in length, 0.5mm deep and 0.3mm wide, was prepared on each root half and filled with radiolucent plasticine (a modelling clay), simulating tissue-occupied buccal and lingual recesses. In the other 10 teeth, no grooves were cut. Each root was reassembled and filled with laterally compacted gutta-percha and sealer. PR and CBCT were used to detect the plasticine-filled grooves. The images were pooled and blindly evaluated by three calibrated examiners (A, B and C). A chi-square test was used to analyse the data. RESULTS:Examiner A, B, C detected grooves on CBCT scans in 20, 20 and 23 teeth, respectively, of which 19, 18 and 19 were true positives. The accuracy of CBCT in diagnosing plasticine-filled grooves was 82-92% for three examiners, significantly higher than the accuracy of PR (30-33%; P<0.001). CONCLUSIONS:Cone-beam computed tomography accurately detected simulated tissue-occupied buccal and lingual recesses.

journal_name

Int Endod J

journal_title

International endodontic journal

authors

Liang YH,Yuan M,Li G,Shemesh H,Wesselink PR,Wu MK

doi

10.1111/j.1365-2591.2012.02025.x

subject

Has Abstract

pub_date

2012-08-01 00:00:00

pages

724-9

issue

8

eissn

0143-2885

issn

1365-2591

journal_volume

45

pub_type

杂志文章,随机对照试验

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