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Does warming composite prior to placing in preparation result in better depth curing?

This question was submitted by a general dentist: Does warming composite prior to placing in preparation result in better depth curing? Dr. Jacinta Santos, Assistant Professor of Restorative Dentistry, Schulich School of Dentistry at Western University, provided a quick initial response  Studies have demonstrated that pre-heating resin composite produces many benefits for the restoration process: Reduced pre-cured viscosity Enhanced adaptation Increased post-cured surface hardness Increased degree of polymerization Research shows that pre-heating composite in a heating device to a temperature of approximately 68°C (± 50 – 55 °C in the composite material) can provide advantages during the restoration process. However, once ...

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Why are flowable resin-based composites so popular?

This summary is based on the Journal of the American Dental Association Perspectives-Observations (December 2013) Advantages of Flowable Resins Flowable resins also vary markedly in viscosity. Some flow almost like water when placed in tooth preparations, and others are relatively putty-like. All brands of flowables are less viscous than are conventional composites. The major reason flowables are popular is one significant singular advantage they flow. Limitations of Flowable Resins The polymerization shrinkage and stress of some flowable composite brands have been shown to be more than those of conventional composites. Recently it has been shown that some new brands of flowables now exhibit wear characteristics similar to those of conventional composites. The strength of some flowables has been shown to ...

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Misuse of opioid pain medication in dentistry: Fact or fiction?

Derived from the Chronic Orofacial Pain Workshop of the Network for Canadian Oral Health Research, IMHA, Canadian Institutes of Health Research, Montreal, November 2013 Gilles Lavigne, DMD, PhD, FRCD,  Professor, Faculté de médecine dentaire, Université de Montreal Mary Lynch, MD FRCPC,Professor Anesthesiology Psychiatry Pharmacology,Dalhousie University, To understand the misuse of prescription opioid analgesics (POA), it is critical to examine the definitions used in the research. The Canadian Alcohol and Drug Use Monitoring Survey (CADUMS) is an ongoing national survey that examines alcohol and drug use in Canadians 15 years of age and older. CADUMS defines the nonmedical use of prescription ...

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Effective Use of Dental Curing Lights: A Guide for the Dental Practitioner

Drs. Richard B. Price, Nasser Barghi, Claus-Peter Ernst, Jack L. Ferracane, Frederick A. Rueggeberg, Adrian Shortall, Howard E. Strassler, and David C. Watts Our sincere thanks go to the American Dental Association for granting access to the full-text of their Professional Product Review. You can find a link to the full-text at the end of this post. On October 10th 2013, the Government of Canada and 91 other countries signed the Minamata Convention on Mercury that will ultimately end the use of mercury, worldwide. This will mean a phase down in the use of dental amalgam and an increase in the use of alternative restorative materials, such as ...

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Online Survey: the perspectives of Canadian dentists and certified orthodontists about the provision of orthodontic care

Dr. Marc-Olivier Aucoin, a graduate Orthodontic Resident from the University of Manitoba, is seeking colleagues’ support to complete an online survey for masters’ thesis. Valuable prizes are available as a Thank You for your participation.  Dear Doctor, I respectfully seek your assistance in completing an online survey for the completion of my Masters’ thesis requirement. Below you will find the link to 10-minute survey titled: The perspectives of Canadian dentists and certified orthodontists about the provision of orthodontic care. The purpose of this survey is to collect information about the current state of aspects of orthodontics practice by Canadian dentists in ...

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Why was dental care excluded from Canadian Medicare?

The Network for Canadian Oral Health Research (NCOHR) has introduced a working paper series. The summary in this post is based on the first paper in the series. The Network for Canadian Oral Health Research (NCOHR) is committed to supporting knowledge exchange among researchers, community partners, and the public. The working paper series attempts to fulfill this commitment by providing a means to disseminate well-written, but not yet published, research.  Full-text article (PDF) Internationally, health policy analysts are often surprised that Canada’s national system of health insurance (Medicare) does not include dental care. Understanding the historical reasons for its exclusion can ...

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Can addictive behaviour be altered? The concept of drug-evoked synaptic plasticity

This summary is based on the article published in the Journal of Neuroscience: Drug-Evoked Synaptic Plasticity Causing Addictive Behavior (November 2013) Context The core element of the addiction process: an initially neutral stimulus becomes attractive when associated with drug consumption, and even after prolonged periods of abstinence this cue may trigger craving and cause the subject to relapse. Therefore, many researchers have argued that the secret to understanding addiction lies in the elucidation of the “memory trace” that links the cue to the compulsive drug use. The implicit underlying hypothesis is that addictive drugs generate an inappropriate learning signal that leads to the encoding of a unique trace, which, when reactivated, has ...

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How safe is sedation for overweight/obese children?

This summary is based on the article published in the Pediatric Dentistry Journal: The safety of sedation for overweight/obese children in the dental setting (September/October 2012) Purpose of the Study Examine childhood overweight/obesity as a risk factor for adverse events during sedation for dental procedures. Key Messages Overall, weight percentiles were higher in children who had one or more adverse events. Similarly, patients with higher body mass index (BMI) percentiles were more likely to experience adverse events. Although preliminary in nature, these findings suggest that childhood overweight/obesity may be associated with adverse events during sedation for dental procedures. In the interim, practitioners should obtain ...

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