文章基本信息

标题：Influence of tooth position within the field of view on the intensity of cone-beam computed tomographic imaging artifacts when assessing teeth restored with various intracanal materials
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作者：Martina Gerlane de Oliveira Pinto ; Saulo Leonardo Sousa Melo ; Yuri Wanderley Cavalcanti 等
期刊名称：Imaging Science in Dentistry
印刷版ISSN：2233-7822
出版年度：2020
卷号：50
期号：2
页码：141-151
DOI：10.5624/isd.2020.50.2.141
出版社：Korean Academy of Oral and Maxillofacial Radiology
摘要：Purpose :This study aimed to quantify the influence of tooth position within the field-of-view (FOV) on cone-beam computed tomography (CBCT) imaging artifacts' intensity when assessing teeth restored with various intracanal materials. Materials and Methods :Seventy single-rooted teeth were divided into 7 groups (10 teeth per group): NiCr post (NC), AgPd post (AP), metal core fiberglass post (MCFG), fiberglass post (FG), anatomical fiberglass post (AFG), fiberglass post cemented with core build-up cement (FGCo), and anatomical fiberglass post cemented with core build-up cement (AFGCo). All posts were cemented using a regular dual-curing resin cement (Allcem), except FGCo and AFGCo which were cemented with a core build-up dual-curing resin cement (AllcemCore). Each tooth was scanned on a CS9000 in 5 positions within the FOV: a central position, anterior horizontal peripheral, peripheral superior, peripheral inferior, and posterior horizontal peripheral position. Hyperdense, hypodense, remaining teeth areas and ROI areas were quantitatively analyzed using ImageJ software. Results :Posterior horizontal peripheral position increased the intensity of artifacts on FGCo and AFGCo post groups ( P <0.05), and specifically the hypodense artifact intensity on FG and AFG post groups ( P <0.05). NC and AP groups presented greater intensity of artifacts than any other post groups ( P <0.05). Conclusion :Artifact intensity increases in the presence of high atomic number materials and when the object is not centered within the FOV. The impact of positioning within the FOV on artifact was greater for fiberglass posts cemented with core build-up dual-curing cement than for metal posts and fiberglass posts cemented with regular dual-curing cement. Copyright © 2020 by Korean Academy of Oral and Maxillofacial Radiology.
关键词：Artifacts;Cone-Beam Computed Tomography;Root Canal Obturation