Over-the-Counter Whitening Strips
Linda Greenwall in Tooth Whitening Techniques, 2017
One other consideration involves whitening with other restorative dentistry. For existing restorations, laboratory research has demonstrated the compatibility of whitening strips with common dental restorative materials (Duschner et al. 2004). For new restorations, postwhitening color rebound could have an impact on restoration matching. Although this relapse has been reported with other whitening systems (Kugel et al. 2009), whitening strip use has generally not been shown to contribute to appreciable rebound even over an extended period (Bizhang et al. 2007). Nonetheless, practitioners may want to consider the implications as part of managing complex whitening and restorative cases.
Effects of Thermal Cycling on Surface Hardness, Diametral Tensile Strength and Porosity of an Organically Modified Ceramic (ORMOCER)-Based Visible Light Cure Dental Restorative Resin
P. Mereena Luke, K. R. Dhanya, Didier Rouxel, Nandakumar Kalarikkal, Sabu Thomas in Advanced Studies in Experimental and Clinical Medicine, 2021
The effect of thermal cycling on degradation of the commercially available visible light cure dental restorative material (Admira®) was evaluated in terms of Vickers hardness number (VHN) and DTS. We have carried out an accelerated thermal cycling test on cured dental composites. Though we have carried out the aging studies of various dental restorative materials [12], changes on porosity, and physico-mechanical properties of visible light cure dental restorative composites based on ORMOCER technology has not reported.
An Introduction to Bioactivity via Restorative Dental Materials
Mary Anne S. Melo in Designing Bioactive Polymeric Materials for Restorative Dentistry, 2020
This book will examine the development of biointeractive/bioactive materials in a context more closely related to restorative dentistry, with the explicit acknowledgment that much of the information has been developed in other specialty disciplines in dentistry. As such, this book will attempt to provide a better understanding of the relative position of bioactive materials in the context of the past and the present status of dental restorative materials.
Deterioration of direct restorative materials under erosive conditions with impact of abrasion and attrition in vitro
Published in Biomaterial Investigations in Dentistry, 2023
Aida Mulic, Amund Ruud, Ida R. Stenhagen, Ellen Bruzell, Amela Tulek
This in vitro study was performed to contribute to selection of a restorative material type by investigating certain dental material properties after exposure to complex wear mechanisms. The wear methods and their sequence were designed to mimic both mechanical and chemical impact during an anticipated daily oral hygiene and diet pattern in an individual. The observed deterioration of Filtek Z250®, Fuji IX GP® and Equia Forte® following the cumulative impact of wear might be representative of their respective material groups. Provided that Filtek Z250® is a typical representative of CR materials, the observed highest final hardness value (Table 2) and the smallest substance loss (Figure 4) compared to the GI and GH materials, indicate that it clinically may be the preferable material for posterior restorations being exposed to the largest chewing forces. Despite similar hardness and roughness values of the GI and GH, the substance loss of Equia Forte® was most likely smaller than that of Fuji IX®, as the latter could not be measured by optical profilometry (Figure 4).
Influence of fiber insertion and different material type on stress distribution in endocrown restorations: a 3D-FEA study
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2022
Gulhan Yildirim, Cihan Demir, Melahat Çelik Güven, Osman Koç, Evrim Eligüzeloglu Dalkiliç
Recent advances in restorative dental material properties and fibers used with composites have encouraged clinicians to apply adhesive restorations on ETT (Hshad et al. 2018; Mena-Álvarez et al. 2020). In particular, fibers have further improved the properties of composite restorations (Dalkılıc et al. 2019). Ribbond (Ribbond, Seattle, WA, USA) is a polyethylene fiber with an ultra-high elastic modulus. These fibers have superior physical properties, such as increasing the flexural properties of the composite resin, having an elastic modulus similar to dentin, providing better levels of fatigue resistance, and effective force transmission (Eskitascıoglu et al. 2002). Previous studies have shown that polyethylene fiber has a stress altering effect and inserting fiber under the composite restorations increased the fracture strength of endodontically treated teeth (Rudo and Karbhari 1999; Belli et al. 2006; Sengun et al. 2008). While the mechanical properties of endocrowns produced from different materials have been evaluated in previous studies, there is no in vitro study evaluating the effect of application of fibers underneath the endocrown restorations (Biacchi and Basting 2012; Rocca et al. 2016). There is one case study in the literature in which glass fibers were used under endocrown restorations (Rocca et al. 2013).
A review on potential toxicity of dental material and screening their biocompatibility
Published in Toxicology Mechanisms and Methods, 2019
Shahriar Shahi, Mutlu Özcan, Solmaz Maleki Dizaj, Simin Sharifi, Nadin Al-Haj Husain, Aziz Eftekhari, Elham Ahmadian
Biological and immunological adverse reactions attributed to dental materials are infrequent, and the reported side effects are not severe. However, this completely depends on the kind of the materials used and the technique used by staff. In some rare cases, severe reactions have been published. Mjör (1992) reviewed the problems and benefits of dental restorative materials and their adverse effects. He emphasized that the allergic reactions are the most confirmed side effects to dental materials due to their known allergen components such as transition metals and solutions such as formaldehyde (Mjör 1992). Formaldehyde may form as by-product of unreacted monomers from some dental resins that may lead to even enhanced tissue responses.
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