Radiopaque properties of polyetheretherketone crown at laboratory study |
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| Affiliation: | 1. Department of Fixed Prosthetic Dentistry, Field of Oral and Maxillofacial Rehabilitation, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan;2. Department of Advanced Prosthodontics, Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan;3. Section of Imaging Diagnosis, Department of Clinical Support, Hiroshima University Hospital, Hiroshima, Japan;4. Department of Oral and Maxillofacial Radiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan;1. Associate Professor, Fixed Prosthodontics Department, Faculty of Dentistry, Beni-Suef University, Beni-Suef, Egypt;2. Professor, Fixed Prosthodontics Department, Faculty of Dental Medicine, Al-Azhar University, Cairo, Egypt;1. Doctoral student, Department of Advanced Prosthodontics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan;1. Assistant Lecturer, Department of Prosthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt;2. Certified Dental Technician, Dental Laboratory, Tokyo Medical and Dental University, Tokyo, Japan;3. Adjunct Lecturer, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan;2. Professor, Division of General Dentistry, The Nippon Dental University Hospital, Tokyo, Japan;4. Professor, Department of Advanced Prosthodontics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan;1. Associate Professor of Oral Biology, Faculty of Oral and Dental Medicine, Future University in Egypt, Cairo, Egypt;2. Professor of Biochemistry, Faculty of Medicine, Cairo University, Cairo, Egypt;3. Associate Professor of Oral Biology, Faculty of Dentistry, Ain Shams University, Cairo, Egypt;1. Lecturer of Oral Biology, Faculty of Dentistry, Ain Shams University, Cairo, Egypt;2. Associate professor of Oral Biology, Faculty of Dentistry, Ain Shams University, Cairo, Egypt |
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| Abstract: | ObjectivesThere have been no reports on the radiopaque properties of new polyetheretherketone (PEEK) crowns for locating crowns during accidental ingestion or aspiration and detection of secondary caries, which is essential information for clinical application. This study aimed to investigate whether the radiopaque properties of PEEK crowns could be used to identify the site of accidental ingestion or aspiration and detect secondary caries.MethodsFour types of crowns were fabricated: three non-metal crowns (PEEK, hybrid resin, and zirconia) and one full metal cast crown (gold-silver-palladium alloy). Initially, the images for these crowns were compared using intraoral radiography, chest radiography, cone-beam computed tomography (CBCT), and multi-detector computed tomography (MDCT); computed tomography (CT) values were calculated. Subsequently, the images for the crowns placed on the secondary caries model with two artificial cavities were compared using intraoral radiography.ResultsThe PEEK crowns displayed the lowest radiopaque properties on radiography and very few artifacts were observed on CBCT and MDCT. On the other hand, the CT values of the PEEK crowns were a little lower than those of the hybrid resin crowns and considerably lower than the zirconia and full metal cast crowns. The cavity could be detected in the PEEK crown-placed secondary caries model through intraoral radiography.ConclusionsThis simulated study of radiopaque properties with four types of crowns suggested that a radiographic imaging system can be used to identify the site of accidental ingestion and aspiration of PEEK crowns and to detect secondary caries of the abutment tooth within a PEEK crown. |
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| Keywords: | PEEK crowns Resins Synthetic Dental materials Radiography |
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