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논문 기본 정보

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학술저널
저자정보
Moudi, Ehsan (Oral and Maxillofacial Radiology Department, Dental School, Babol University of Medical Science) Haghanifar, Sina (Oral and Maxillofacial Radiology Department, Dental School, Babol University of Medical Science) Madani, Zahrasadat (Endodontics Department, Dental School, Babol University of Medical Science) Bijani, Ali (Social Department of Health Research Center, Babol University of Medical Science) Nabavi, Zeynab Sadat (Oral and Maxillofacial Radiology Department, Dental School, Babol University of Medical Science)
저널정보
대한영상치의학회 Imaging science in dentistry Imaging science in dentistry 제45권 제3호
발행연도
2015.1
수록면
147 - 151 (5page)

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Purpose: The aim of this study was to investigate the effects of metal artifacts on the accurate diagnosis of root fractures using cone-beam computed tomography (CBCT) images with large and small/limited fields of view (FOVs). Materials and Methods: Forty extracted molar and premolar teeth were collected. Access canals were made in all teeth using a rotary system. In half of the teeth, fractures were created by the application of mild pressure with a hammer. The teeth were then randomly put into a wax rim on an acryl base designed in the shape of a mandible. CBCT scans were obtained using a Newtom 5G system with FOVs of $18cm{\times}16cm$ and $6cm{\times}6cm$. A metal pin was then placed into each tooth, and CBCT imaging was again performed using the same fields of view. All scans were evaluated by two oral and maxillofacial radiologists. The specificity, sensitivity, positive predictive value, negative predictive value, and likelihood ratios (positive and negative) were calculated. Result: The maximum levels of sensitivity and specificity (100% and 100%, respectively) were observed in small-volume CBCT scans of teeth without pins. The highest negative predictive value was found in the small-volume group without pins, whereas the positive predictive value was 100% in all groups except the large-volume group with pins. Conclusion: The specificity of CBCT decreased with the presence of a pin in the large-volume group, but not in the small-volume group.
#Cone-Beam Computed Tomography #Tooth Fractures #Artifacts #Sensitivity and Specificity

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참고문헌 (16)

참고문헌 신청
Katsumata A / 2009 / Relationship between density variability and imaging volume size in cone-beam computerized tomographic scanning of the maxillofacial region: an in vitro study / Oral Surg Oral Med Oral Pathol Oral Radiol Endod 107:420~425 google schola Palomo JM / 2006 / Three-dimensional cone beam computerized tomography in dentistry / Dent Today 25:130~135 google schola Bechara BB / 2012 / Metal artefact reduction with cone beam CT : an in vitro study / Dentomaxillofac Radiol 41:248~253 google schola Ferreira RI / 2013 / Detection of vertical root fractures by cone-beam computerized tomography in endodontically treated teeth with fiber-resin and titanium posts: an in vitro study / Oral Surg Oral Med Oral Pathol Oral Radiol 115:e49~e57 google schola Sina Haghanifar / 2014 / A comparative study of cone-beam computed tomography and digital periapical radiography in detecting mandibular molars root perforations / Imaging Science in Dentistry 44(2):115~119 google schola

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