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Medicine

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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Is there a professional manner to address the issue of HPV with patients in the dental office?

This question was submitted by a general dentist: Does anyone have a polite and professional way to address the HPV issue with patients in a dental office setting? Drs. Nita Mazurat, from the University of Manitoba, and Suham Alexander provided a quick initial response.  The major role of the dentist with respect to HPV is to provide a head and neck examination, to encourage patients to perform regular self-examinations, to encourage adult patients and parents of appropriately aged children to consider having HPV vaccine, and to refer patients with suspicious lesions or persistent symptoms.  The patient’s health history, particularly any verbal ...

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Audio Interview: Researchers at the University of Calgary unlock a new mechanism in pain management

Dr. Chiraz Guessaier, CDA Oasis Project Manager, spoke with Dr. Gerald Zamponi, Neuroscientist, Professor, and Senior Associate Dean of Research in the Faculty of Medicine at the University of Calgary. Dr. Zamponi and his team unlocked a new mechanism in pain management by means of which chronic pain can be reversed.       Listen to the audio interview http://www.oasisdiscussions.ca/wp-content/uploads/2014/09/Zamponi_Original.mp3   View Dr. Gerald Zamponi profile Visit the Hotchkiss Brain Institute website  

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What are the trends in high-dose opioid prescription in Canada?

This summaary is based on the article published in Canadian Family Physician: Trends in high-dose opioid prescribing in Canada (September 2014) Tara Gomes, Muhammad M. Mamdani,  J. Michael Paterson, Irfan A. Dhalla, David N. Juurlink    Context Canada and the United States have the highest levels of prescription opioid consumption in the world, and the use of these medications continues to increase dramatically across North America. (1–5) Until recently, clinical practice guidelines and product monographs provided no recommended maximum dose, and opioids were marketed as having no upper dose threshold, despite scant evidence of safety or effectiveness at high doses, particularly in patients ...

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Why are Lanolin-based creams and ointments preferred over petroleum-based products for moisturizing and protective properties?

This question was submitted by a general dentist: Why are Lanolin-based creams and ointments preferred over petroleum-based products for moisturizing and protective properties? Dr. Carol Janik and Caroline Fulop provided this initial response.  The key difference between lanolin and petroleum-based products lie in their properties. Lanolin is classified as an emollient whereas Petrolatum is classified as an occlusive. Emollients are oils and lipids that spread easily on the skin and provide partial occlusion resulting in hydration (Rawlings et al., 2004). It has been shown that emollient lipids resemble those naturally found on the skin and have been shown to improve the ...

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Does diabetes affect implant failure rates?

This summary is based on the article published in the Journal of Dental Research: Diabetes and oral implant failure: a systematic review (September 2014) B.R. Chrcanovic, T. Albrektsson, and A. Wennerberg Context Dental implant survival is initially dependent on successful osseointegration following placement. As an implant is restored and placed into function, bone remodeling becomes a critical aspect of implant survival in responding to the functional demands placed on the implant restoration and supporting bone. The critical dependence on bone metabolism for implant survival may be heightened in patients with diabetes (1). Diabetic patients have increased frequency of periodontitis and ...

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How do you treat a patient with scleroderma who has periodontal issues – advanced recession, stripping of the attached gingiva from the roots?

This question was submitted by a general dentist: How do you treat a patient with scleroderma who has periodontal issues – advanced recession, stripping of the attached gingiva from the roots? Dr. George Sandor, DDS MD and Dr. Suham Alexander, Oasis Clinical Editor provided this initial response.      Systemic Scleroderma  Systemic scleroderma is a relatively rare condition that affects ~19/1,000,000 adults annually. Women experience the condition 3 times more than men. A vasoconstrictive event known as Raynaud’s phenomenon is often one of the first signs of the disease which is precipitated by emotional distress or exposure to cold. (It should ...

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Is it safe to use vasoconstrictors in patients with sickle-cell disease?

This question was submitted by a general dentist: Is it safe to use vasoconstrictors in patients with sickle-cell disease? Which one is the best choice? Could I perform a painless dental extraction without vasoconstrictors in these cases? Dr. George Sandor, DDS MD and Dr. Suham Alexander, Oasis Clinical Editor provided this initial response. Sickle Cell Anemia  Sickle cell anemia is a genetic disorder of hemoglobin synthesis occurring predominantly in African, Mediterranean and Asian populations. Affected individuals with carrying one allele have the sickle cell trait and may experience some sickling with exercise or in high altitudes due to lower oxygen tensions. ...

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