الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The presence of artifacts produced in CBCT images by metallic restorations might hinder accurate diagnosis. This study evaluates the ability of Blu-mousse and medium-body PVS in the reduction of CBCT artifacts produced by metallic restorations and orthodontic brackets in the presence or absence of the MAR tool.
In this study four extracted teeth were used with different metallic restorations and orthodontic brackets. The teeth were placed in a dental stone model and an impression was taken as a replication template for Blu-mousse and PVS. The teeth were covered by each dental material separately and scanned using CBCT with or without the MAR. CBCT images were exported and evaluated quantitatively and qualitatively by two radiologists.
The MAR tool improved image quality and reduced the artifacts in both the quantitative and qualitative analysis. Both Blu-mousse and PVS increased the mean gray values in the presence or absence of the MAR tool. Dental materials’ effects on std dev and range of gray values were site-specific. Likewise, qualitative scoring demonstrated that CBCT artifacts were reduced by impression materials, particularly Blu-mousse in the absence of MAR tool. Furthermore, Blu-mousse had better effects in decreasing CBCT artifacts than PVS.
This study demonstrated that prosthodontic materials (Blu-mousse and PVS) can efficiently augment the effect of MAR tool in the reduction of metallic artifacts of CBCT images or might act separately as an artifact-reduction strategy in the absence of MAR tool.