Home » Supporting Your Practice » Dental Specialties » Restorative Dentistry (page 20)

Restorative Dentistry

What is a safe level of mercury due to dental amalgam? A Canadian descriptive study

This summary is based on the study published in the BMC Oral Health journal: Dental amalgam and urinary mercury concentrations: a descriptive study Full Article (html) Full Article (PDF) Authors Alexandra Nicolae, Community Dental Health Services Research Unit at the University of Toronto Carlos Quiñonez, Community Dental Health Services Research Unit at the University of Toronto Harry Ames, Alberta Dental Association and College Context Dental amalgam is a source of elemental and inorganic mercury. The safety of dental amalgam in individuals remains a controversial issue. Urinary mercury concentrations are used to assess chronic exposure to elemental mercury. At present, there are ...

Read More »

How do you manage a patient undergoing an allogeneic bone marrow transplant?

This question was submitted to us by a general dentist: How should we manage a patient undergoing an allogeneic bone marrow transplant? Dr. Jeff Chadwick, at Princess Margaret Cancer Centre, Dental Oncology, Ocular, and Maxillofacial Prosthetics Group, provided a preliminary response to this question The allogeneic bone marrow transplant (BMT) is a medical procedure that may be employed for the treatment of several hematologic malignancies including, but not limited to, aplastic anemia, myelodysplastic syndrome, acute and chronic leukemias and lymphomas. BMTs typically involve the insertion of a central venous catheter (CVC), high dose chemotherapy and, in some cases, total body irradiation, prior ...

Read More »

What is an alveolar fracture?

This post is an adaptation of the Alveolar Fracture article found in the Dental Trauma Guide Description A fracture of the alveolar process; may or may not involve the alveolar socket. Teeth associated with alveolar fractures are characterized by mobility of the alveolar process; several teeth typically will move as a unit when mobility is checked. Occlusal interference is often present. Etiology Diagnosis A fracture of the alveolar process; may or may not involve the alveolar socket. Teeth associated with alveolar fractures are characterized by mobility of the alveolar process; several teeth typically will move as a unit when mobility ...

Read More »

Could green tea improve bond strength following bleaching?

  This summary is based on the article published in the European Journal of Oral Sciences: Can green tea be used to reverse compromised bond strength after bleaching? (August 2013)       Purpose of the Study  Evaluate the antioxidant effect of green tea on microtensile bond strength to bleached enamel. Key Messages Green tea catechins have been shown to possess potent antioxidant activity several times higher than that of vitamin C and vitamin E. The strong antioxidant properties of green tea have been attributed to catechins of EGCG and EGC which can donate hydrogens from the hydroxyl groups in their structure and have ...

Read More »

Opening the Conversation: Is Dental Caries an Infectious Disease?

This question is a conversation opener on the nature of the caries process Dentists agree that demineralization of tooth surfaces from bacterial acid production is the direct cause of caries. However, the concept of dental caries as an infectious disease is less clear: dental caries are caused by bacteria that are resident flora in the oral cavity, not by an infection of a specific, foreign microorganism—the classical notion of an infectious disease. If the infection is caused by bacteria that originate from the host, can tooth decay be considered an infectious disease and why does it matter? Many dentists were ...

Read More »

How do you treat a portion of all porcelain crown that breaks off in esthetic zone?

This question was submitted by a general dentist: Portion of all porcelain crown breaks off in esthetic zone. Do you etch porcelain first with hydrofluoric acid and then enamel/dentin with phosphoric acid, then silane primer on porcelain, then bond on tooth, then restorative material? Is it a big concern, if a little of the hydrofluoric acid gets on tooth structure – could happen easily, especially with a smaller tooth like a lower incisor. Dr. Omar El-Mowafy, Professor and Head of Restorative Dentistry in the Faculty of Dentistry at the University of Toronto provided this quick initial response I am of the ...

Read More »

Do the newer amalgam non-corrosion alloys fill with corrosion products and seal better as they age?

This question was submitted by a general dentist: Do the newer amalgam non-corrosion alloys fill with corrosion products and seal better as they age? Dr. Anuradha Prakki, Restorative Dentistry Assistant Professor, in the Faculty of Dentistry at the University of Toronto, has provided this quick initial response Drafted by Alexandra Rabalski, JCDA Oasis Summer Intern This depends on the material used for the restoration and the size of the initial gap at the amalgam/tooth interface. High-copper, corrosion-resistant amalgam with a small initial interfacial gap between the amalgam and tooth structure seal as rapidly as the lower copper alloys.   Reference Mahler DB, ...

Read More »

What is the safest way to clean up the cement found inside a porcelain crown?

This question was submitted by a general dentist: A patient comes in with a full porcelain crown which has come off. The tooth is sound and there is resin cement inside the crown. What’s the safest way to clean up the cement from inside that crown?   Dr. Alan Kilistoff, from the  University of Alberta, provided the following initial response in an interview recorded with Dr. John. O’Keefe. A summary of the interview is provided followed by the complete audio interview (7 minutes)       Historically, the safest way would have been to sandblast out the interior of the crown; ...

Read More »