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Dental Materials

Which methods for polishing glass ceramics show better performance? A literature review

This summary is based on the article published in the Journal of Prosthodontic Research: Polishing for glass ceramics: Which protocol? (July 2014)           Taˆ nia Mara da Silva DDS, MD student Ana Carolina Rodrigues Danzi Salvia DDS, MD Rodrigo Furtado de Carvalho DDS, MD Clovis Pagani DDS, MD, PhD Daniel Maranha da Rocha DDS, MD, PhD Eduardo Galera da Silva DDS, MD, PhD Context By working with ceramic restorations, the dentist often needs to perform clinical adjustments through wear by diamond burs, consequently removing the superficial glazing layer. These adjustments are needed when the restoration exhibits ...

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What is the role of glass-ionomer cements in the preservation of tooth structures against caries?

This summary is based on the article published in the British Dental Journal: Minimal intervention dentistry II: part 7. Minimal intervention in cariology: the role of glass-ionomer cements in the preservation of tooth structures against caries (May 2014) H. Ngo and S. Opsahl-Vital     Context Glass-ionomer cements (GICs) are essential materials in clinical practice because of their versatility, self-adhesion to enamel and dentine, and good biocompatibility. In addition, being chemically cured, with no shrinkage stress, makes them well suited for minimally invasive restorative techniques. Purpose of the Article This article looks at some of the clinical situations where the ...

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What are the incidence rates, annual and 24-months, of defects and replacement on restorations?

This summary is based on the study conducted by the National Dental Practice-Based Research Network on 24-month evaluation of amalgam and composite based restorations.       Watch the Video   Factors affecting early failure rates of dental restorations Factors related to the patient factors: age, size of the lesion and location and type of tooth. Material failure: longevity of amalgam compared to resin-based restorations vary depending on patient and tooth characteristics. Factors related to the Clinician: age, gender, educational background. Goal of the Study Quantify the annual and two-year incidence rates of defects and replacement on restorations. Results of ...

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Heating composite resins: Is it beneficial?

This question was submitted by a general dentist: Is it beneficial to heat composite resin before placing it? Are there any disadvantages or advantages to heating? Dr. Stephen Ferrier provided a quick initial response to the question in collaboration with Dr. Suham Alexander, Oasis Clinical Editor. Dr. Stephen Ferrier is Assistant Professor in restorative dentistry at the Schulich School of Medicine and Dentistry at Western University.  Heating composite resin is one way of increasing the flowability of an unpolymerized resin as the viscosity is reduced. This can be advantageous in improving the adaptation of the material to the cavity preparation and decreasing ...

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Buyer Beware! Not all Curing Lights are Equal

This post was prepared in collaboration with BlueLight Analytics On an experimental basis, we have asked a limited number of companies to provide us with practical “How To” answers to clinical questions. We were prompted to conduct this experiment when dental team members told us that they visit company websites and consult company representatives for practical clinical information. We look forward to receiving your feedback on this experiment.  Light cured materials (sealants, resin composite, cements) are a prominent part of dentistry.  As such, light curing units are a “must-have” in a dental practice. An increasing number of dentists are sourcing ...

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Video Presentation: How important is patient satisfation? Study Findings

This is the summary of the findings of the National Dental Practice-Based Research Network’s study of satisfaction of patients who received a restorative treatment. Watch the video   Patient satisfaction is important due to its: Impact on the likelihood of a patient choosing a dentist, making, and keeping appointments. Impact on the patients’ oral healthcare and on maintaining regular dental care. Study Purpose Determine patient satisfaction with components of a restoration visit. Identify factors associated with greater patient satisfaction. Examine whether dentists are aware of their patient’s satisfaction. Study Findings The highest levels of satisfaction were seen for the friendliness of the ...

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Are there any adverse effects to handling/molding unset light cured resin composites with non-latex gloves?

This question was submitted to us by a general dentist:  Are there any adverse effects to handling/molding unset light cured resin composites with non-latex gloves? I mold Class V and Class IV restorations this way all the time and it works great. I cannot visualize any problem because there is no powder and I think it is unlikely there would be any reaction between these gloves and the composite resin. But I am curious. Dr. Stephen Ferrier in collaboration with Dr. Suham Alexander, Oasis Clinical Editor provided this quick initial response. Dr. Stephen Ferrier is Assistant Professor in restorative dentistry at the Schulich ...

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Video Presentation: Repair or Replace a Defective Restoration? Study Findings

This is the summary of the findings of the National Dental Practice-Based Research Network’s study on repair or replacement of defective restorations.  Watch the video   Purpose of the Study Determine whether dentists in practices in the Dental PBRN are more likely to repair rather than replace a restoration that they diagnose as defective. Quantify the specific reasons for repairing or replacing restorations. Test the hypothesis that certain dentist-, patient-, and restoration-related variables are associated with the decision between repairing and replacing restorations. Study Findings Dentists were more likely to replace rather than repair by a 3-fold difference. Dentists who placed ...

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