Objective: The aim of this study was to evaluate the radiopacity of different composite resins and compare the values to those of human enamel and dentine.
Materials And Methods: Five specimens of each material with thicknesses of 2 mm were prepared and radiographed alongside aluminum step wedge and human enamel and dentin. Three occlusal radiographs for each material were taken and digitized using a desktop scanner. Mean gray values of the test materials were measured using Image J software. Then a conversion was performed according to establish the radiopacity of the test materials, in millimeters of equivalent Al. Data were analyzed using one-way analysis of variance and Duncan multiple range tests (P < 0.05).
Results: The radiopacity values varied among the restorative materials (P < 0.05). The radiopacity values of the materials tested were, in decreasing order: Enamel Plus HRI > Z250 > Filtek Ultimate ≥ Z550 > Nexcomp ≥ Nanoceram Bright > enamel ≥ Estelite Sigma Quick > Clearfil Majesty Esthetic ≥ Reflexions XLS ≥ Aelite LS Posterior ≥ dentin ≥ 2 mm Al.
Conclusion: All resin composite materials investigated in this study presented different radiopacity values. However, all materials had radiopacity values greater than dentin and had sufficient radiopacity to meet International Organization for Standardization 4049 standard.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4144132 | PMC |
| http://dx.doi.org/10.4103/1305-7456.137644 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Challenges in detecting various peri-implant bone defects on modified intraoral oblique radiographic projections: evaluation of an artificial mandibular model.
Oral Radiol
January 2025
Department of Oral and Maxillofacial Radiology, The Nippon Dental University School of Life Dentistry, Tokyo, Japan.
Objective: The objective of this study was to evaluate the effectiveness of oblique radiographic projection using the intraoral paralleling technique in detecting various peri-implant bone defects.
Methods: Artificial mandibular models with appropriate radiopacity were created. An alveolar bone model without bone defects and models with 12 types of peri-implant bone defects (buccal, circumferential, and mixed types with different widths and depths) were created.
Physicochemical properties of silicate tricalcium-based cement for use as pulp capping or repair material.
Braz Oral Res
January 2025
Universidade Federal do Ceará - UFC, School of Pharmacy, Dentistry and Nursing, Post-graduate Program in Dentistry, Fortaleza, CE, Brazil.
This study evaluated some physicochemical properties of an experimental tricalcium silicate-based cement (ETSC) indicated for use as pulp capping or endodontic repair material; Biodentine (BD) and White MTA-Angelus (MTA) cements served as comparators. Setting time, radiopacity, sorption, and solubility were determined according to ISO 6876/2012 and compressive strength according to ISO 9917-1/2019. pH and calcium ion release capacity were also assessed.
View Article and Find Full Text PDFProduction of heterogenous bone radiopacity phantom using 3D printing.
Phys Eng Sci Med
December 2024
Faculty of Dentistry, Dentomaxillofacial Radiology Department, Ankara University, Ankara, Türkiye.
Article Synopsis
- The study focuses on creating a customizable 3D-printed bone phantom that mimics real bone radiopacity for various medical applications, including education and surgical planning.
- Researchers combined direct and indirect methods, using SLA 3D printing with a modified photoreactive resin that includes hydroxyapatite to achieve realistic bone-equivalent radiodensity.
- The resulting phantoms demonstrated comparable attenuation coefficients to real bone, indicating their effectiveness in simulating bone characteristics without significant statistical difference.
Evaluation of Radiopacity of Calcium Silicate-Based and Resin-Based Materials Using Direct Digital Radiography Along With an Aluminium Step Wedge.
Cureus
September 2024
Public Health Dentistry, Teerthanker Mahaveer Dental College and Research Centre, Moradabad, IND.
Background Radiopacity is a critical property for root canal sealers as it allows for the assessment of the material's placement and quality within the root canal system on radiographic images. The study aimed to evaluate the radiopacity of calcium silicate-based and resin-based materials using direct digital radiography, employing an aluminium step wedge according to American National Standards Institute/International Organization for Standardization (ANSI/ISO) standard protocols for testing the radiopacity of root canal sealers. This study seeks to determine the effectiveness of these materials in meeting the required standards for clinical use.
View Article and Find Full Text PDFBiomechanical and Physical Characteristics of Dental Dam Sheets Used for Absolute Isolation.
Oper Dent
November 2024
*Carlos José Soares, DDS, MSc, PhD, professor and chair, Department of Operative Dentistry and Dental Materials, School of Dentistry, Universidade de Uberlândia, Uberlândia, MG, Brazil.
Article Synopsis
- The study evaluates the mechanical and physical properties of 21 different dental dam sheets used for isolation, measuring parameters like thickness, rupture force, elongation, and ultimate tensile strength, alongside their costs.
- Testing involved cutting samples and using a universal testing machine to assess properties while also examining the sheets' structure and composition through various methods including scanning electron microscopy.
- Results showed variations in thickness and mechanical performance, with Flexidam being the thickest and the non-latex Sanctuary dam exhibiting the highest elongation, while the Bassi dental dam had the best ultimate tensile strength.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!