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. 2019 Nov 26;4(3):139-144.
doi: 10.14744/eej.2019.53825. eCollection 2019.

Comparison of the Estimated Radiographic Remaining Dentine Thickness with the Actual Thickness Below the Deep Carious Lesions on the Posterior Teeth: An in vitro Study

Nouf Al Jhany  1 , Banin Al Hawaj  1 , Alanoud Al Hassan  2 , Zhoor Al Semrani  2 , Mohammed Al Bulowey  3 , Shahzeb Ansari  4
Affiliations

Comparison of the Estimated Radiographic Remaining Dentine Thickness with the Actual Thickness Below the Deep Carious Lesions on the Posterior Teeth: An in vitro Study

Nouf Al Jhany et al. Eur Endod J. .

Abstract

Objective: Maintaining the remaining dentine thickness (RDT) is crucial because it acts as a protection barrier to the vital pulp tissue against injury and inflammatory products. Based on the relationship between the radiographic RDT (RRDT) and actual RDT (ARDT), we aimed to develop a validated method for guiding dentists in estimating the RDT before caries excavation.

Methods: 30 extracted human teeth were subject to the two-stage experimentation of exposure to cone beam radiography and measurement of actual remaining dentine after sectioning. RRDT and ARDT were recorded, and the difference was statistically analyzed.

Results: A significant difference in the mean values of the estimated difference in dentine thickness was observed (P<0.05). There was no significant difference between molars and premolars as they exhibited a similar range in the difference of the RDT.

Conclusion: It is challenging to find a stable relationship between RRDT and ARDT.

Keywords: Actual dentine; cone beam tomography; estimation; radiographic.

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Conflict of interest statement

Conflict of interest: The authors do not have any financial interest in any of the companies whose products are included in this article.

Figures

Figure 1
Figure 1
Radiographic sample radiographed via Cone Beam digital radiography (paralleling technique). The film covers the coronal, middle, apical thirds of the tooth. Tooth was mounted on an acrylic jaw model. 34x43mm (96x96 DPI)
Figure 2
Figure 2
Radiographic image of a molar sample after enhancement of the image qulaity
Figure 3
Figure 3
Photograph showing the sectioned part of molar after caries removal with a high speed hand-piece, round carbide bur, and manual excavation using spoon excavator. The tooth was fixed by the Vise machine and cross-sectioned with the high speed hand-piece with a disc diamond bur. 34x47mm (96 x 96 DPI)
Figure 4
Figure 4
Digital caliper used for measurement 66x26 mm (96x96 DPI)
Figure 5
Figure 5
Mean and SD values of RRDT and ARDT
Figure 6
Figure 6
Comparison of mean values for premolars and molars
See this image and copyright information in PMC

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