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Dental Materials

Bioceramic materials in endodontics

This summary is based on the article published in Endodontic Topics: Bioceramic materials in endodontics (May 2015) Zhejun Wang Courtesy of Wiley Publishing, you can access the full-text article for the next 3 months (PDF)   Context During the past two decades, a number of major advances have been made in the field of bioactive ceramics used for endodontic treatment. Bioceramic materials, with their biocompatible nature and excellent physico-chemical properties, are widely used in endodontic applications. They can function as cements, root repair materials, root canal sealers and filling materials, which have the advantages of enhanced biocompatibility, potential increased root ...

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CDA Oasis Conversations: Chris Felix speaks about light curing outputs

Chris Felix, from BlueLight Analytics, spoke with Dr. Suham Alexander about the work BlueLight Analytics is doing in the area of light curing outputs. Click here to read/print the Light Curing Guidelines for Practitioners Chris Felix is a material scientist who has spent the last 11 years conducting research in the field of light cured dental materials. He has co-authored over 40 publications with some of the world’s most well respected key opinion leaders in the field of dental materials.     Watch the video interview  

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All-ceramic or metal-ceramic tooth-supported fixed dental prostheses (FDPs)? A systematic review of the survival and complication rates

This summary is based on the article published in Dental Materials: All-ceramic or metal-ceramic tooth-supported fixed dental prostheses (FDPs)? A systematic review of the survival and complication rates. Part I: Single crowns (SCs) (June 2015) Irena Sailer, Nikolay Alexandrovich Makarov, Daniel Stefan Thoma, Marcel Zwahlen, Bjarni Elvar Pjetursson Context All-ceramic fixed dental prostheses (FDPs) are considered an established treatment alternative to metal-ceramic FDPs in daily clinical practice. The main reason to use of the all ceramics instead of metal-ceramics is based on more favorable esthetics 3. All-ceramic materials mimic very naturally the optical properties of teeth. Another more recent factor ...

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Is there clinical evidence for successful bonding of dental oxide ceramic restorations?

This summary is based on the article published in Dental Materials: Bonding to oxide ceramics—Laboratory testing versus clinical outcome (January 2015) Matthias Kern Context A large number of articles dealing with bonding to zirconia and other oxide ceramics suggests that bonding to these ceramics would be an unsolved problem in dentistry. Most original laboratory research reports on bonding to zirconia ceramics start in their introduction with a statement pointing more or less out that achieving a reliable and predictable bond to this ceramic would be a major problem in dentistry or at least a limitation when restorations with limited or no ...

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Can a patient react against composite resin fillings when diagnosed with a contact allergy to epoxy?

This post is based on a Q&A published on the Nordic Institute of Dental Materials website Can a patient react against composite resin fillings when he or she has been diagnosed with a contact allergy to epoxy? Should existing composite fillings be removed, and placement of new fillings avoided? Could resin-based luting cements pose a risk of allergy?   The potential cross-reaction between BIS-GMA − a commonly used constituent of many composite resins − has been a matter of concern. However, an association has not been established. BIS-GMA has chemical similarities with epoxy, but contains an acrylic moiety, which is ...

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Which technique(s) should we use to fill a Class II proximal box? Is there a difference in the long term margin integrity?

This question was submitted by a general dentist: I always worry that the cavosurface margins of class II preps are not fully filled when using composite resin. Is there a difference in the long-term margin integrity using the following 3 methods? Pack composite resin into the proximal box using an amalgam condenser. Place flowable resin along all cavosurface margins of the proximal box and cure it prior to packing composite. Place flowable resin on the cavosurface margins and then insert composite on top of the uncured flowable. Dr. John Burgess and Dr Suham Alexander provided this initial response.  Dr. John ...

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What is the impact of the Minamata Convention on Mercury on dentistry?

Context In February 2009, the Governing Council of the United Nations Environmental Programme (UNEP) agreed on the need to develop a global legally binding instrument, or treaty, on mercury. It tasked governments to negotiate through an Intergovernmental Negotiating Committee (INC) on Mercury, which met five times beginning in June 2010 and concluding in January 2013. The resulting international instrument is called the Minamata Convention on Mercury. Opened for signature in October 2013, it provides controls and reductions across a range of products, processes and industries where mercury is used, released or emitted. The Convention’s provisions for dental amalgam—a mercury-added product containing 50% mercury—make ...

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FACT OR FOLLY? All light curing units are created equally. Summary of the Dalhousie University’s First Conference on Light Curing

The conferences on Light Sources in Dentistry held at Dalhousie University, Halifax, NS bring world experts from academia and industry together to discuss ideas, advances and issues related to resin-based composite materials and light sources used in dentistry.  The 2nd Halifax Conference took place this past spring and information from this meeting has now been published. (Consensus statement from May Light Sources Meeting published in Journal of Adhesive Dentistry Vol. 16, No 4, 2014: Light Curing – Guidelines for Practitioners)  Short summaries of the topics covered at the 1st Halifax Conference (held in October 2012) along with links to the YouTube ...

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