Performance of an artefact reduction algorithm in the diagnosis of in vitro vertical root fracture in four different root filling conditions on CBCT images

Abstract

The application of the ARA did not influence the diagnosis of root fractures, and its effects did not depend on root conditions. In relation to the filling materials, gold posts reduced the overall CBCT diagnostic ability, regardless of the use of the ARA.

Influence of exposure parameters on the detection of simulated root fractures in the presence of various intracanal materials

“…Pinto et al Effect of parameters on fracture detection International Endodontic Journal, 50, 586-594, 2017 which may impair CBCT diagnostic performance, making the diagnosis more difficult and time-consuming (Costa et al 2011, Moudi et al 2014, Bezerra et al 2015, Ferreira et al 2015. In the present study, the diagnosis of VRF was compromised by the presence of metallic posts and gutta-percha, in accordance with previous studies (Costa et al 2011, Wang et al 2011, Khedmat et al 2012, Junqueira et al 2013, Patel et al 2013, Neves et al 2014, Ferreira et al 2015, de Rezende Barbosa et al 2016). On the contrary, it has also been reported that the presence of gutta-percha root fillings does not decrease the accuracy of VRF diagnosis (Hassan et al 2009, Melo et al 2010, Moudi et al 2014.…”

“…, de Rezende Barbosa et al . ). On the contrary, it has also been reported that the presence of gutta‐percha root fillings does not decrease the accuracy of VRF diagnosis (Hassan et al .…”

“…Teeth restored with metallic posts were associated with worse results than those restored with fibreglass posts for root fracture detection due to density differences between those materials (de Rezende Barbosa et al . ). In fact, in the present study, the fibreglass post group performed similar to the unrestored group, and significantly better than the metallic post group, on VRF detection and subjective artefact analysis.…”

“…(de Rezende Barbosa et al . ) and do not provide all the nuances of radiation attenuation that occur in human body. Despite the fact that all possible exposure parameters were applied, it is still limited to that one specific scanner.…”

“…Artefacts may be avoided, or at least reduced, in dental practice, for example restoration-related artefacts may be modified using different materials. It has been reported that the diagnosis of roof fractures on CBCT imaging was greater when the tooth was restored with fibreglass (84% accuracy) instead of traditional metallic posts (67% accuracy) (de Rezende Barbosa et al 2016). Adjusting the exposure parameters (ideally increasing most of them) of the CBCT scanner to avoid the generation of lower energy photons is also a possibility.…”