Radiopacities of Glass Ionomer Cements Measured With Direct Digital Radiographic System
Purpose: The purpose of this study was to determine and compare the radiopacities of 5 glass ionomer cements (GICs) of different thickness using a digital radiographic system—storage phosphor plate.
Methods: The GICs tested were Vitremer, Vitrofil LC, Magic Glass, Vitromolar, and Maxxion, distributed into the orifices of 16 acrylic plates made to a thickness of 2 mm, 3 mm, 5 mm, and 6 mm. Each plate was radiographed 3 times, and the images obtained were processed by computer. The images were read 3 times using the VixWin 2000 program, totaling 720 readings of radiographic density. One-way analysis of variance was applied for statistical analysis with identification of differ- ences using Scheffe's multiple comparisons test (α=5%).
Results: All the GICs varied in radiopacity according to thickness. Maxxion showedthe lowest value of radiopacity, whereas Magic Glass displayed the highest level of radiopacity at all thicknesses studied. However, Vitremer and Vitrofil LC showed similar results.
Conclusion: It is important to know GIC radiopacities to help differentiate them from tooth structure and carious lesions as well as to use them correctly.
Methods: The GICs tested were Vitremer, Vitrofil LC, Magic Glass, Vitromolar, and Maxxion, distributed into the orifices of 16 acrylic plates made to a thickness of 2 mm, 3 mm, 5 mm, and 6 mm. Each plate was radiographed 3 times, and the images obtained were processed by computer. The images were read 3 times using the VixWin 2000 program, totaling 720 readings of radiographic density. One-way analysis of variance was applied for statistical analysis with identification of differ- ences using Scheffe's multiple comparisons test (α=5%).
Results: All the GICs varied in radiopacity according to thickness. Maxxion showedthe lowest value of radiopacity, whereas Magic Glass displayed the highest level of radiopacity at all thicknesses studied. However, Vitremer and Vitrofil LC showed similar results.
Conclusion: It is important to know GIC radiopacities to help differentiate them from tooth structure and carious lesions as well as to use them correctly.
Keywords: DENTAL DIGITAL RADIOGRAPHY; DENTAL MATERIALS; GLASS IONOMER CEMENTS
Document Type: Research Article
Affiliations: 1: Department of Preventive Dentistry, the Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil. [email protected] 2: Private practice in Porto Alegre, Brazil 3: Department of Surgery, the Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil 4: Department of Preventive Dentistry, the Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
Publication date: 01 May 2012
- Acquired after the merger between the American Society of Dentistry for Children and the American Academy of Pediatric Dentistry in 2002, the Journal of Dentistry for Children (JDC) is an internationally renowned journal whose publishing dates back to 1934. Published three times a year, JDC promotes the practice, education and research specifically related to the specialty of pediatric dentistry. It covers a wide range of topics related to the clinical care of children, from clinical techniques of daily importance to the practitioner, to studies on child behavior and growth and development. JDC also provides information on the physical, psychological and emotional conditions of children as they relate to and affect their dental health.
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