This summary is based on the article published in the Journal of Prosthodontics: Updated Clinical Considerations for Dental Implant Therapy in Irradiated Head and Neck Cancer Patients (August 2013) Context An increasing number of reports indicate successful use of dental implants (DI) during oral rehabilitation for head and neck cancer patients undergoing tumor surgery and radiation therapy. Implant-supported dentures are a viable option when patients cannot use conventional dentures due to adverse effects of radiation therapy, including oral dryness or fragile mucosa, in addition to compromised anatomy. However, negative effects of radiation, including osteoradionecrosis, are well documented in the literature, and early loss of implants in irradiated ...Read More »
This summary is based on the article published in Gerodontology: Clinical aspects of the use of dental adhesive materials in patients with chronic xerostomia (June 2013) Context Adhesives are commonly used by denture wearers to increase the retention and stability of the complete denture, to improve the chewing and masticatory abilities and to psychologically support the patient to make the complete denture more acceptable. Denture fixatives can be especially recommended for use and to aid retention for patients with dryness of the mouth, poor secretion of saliva and xerostomia (e.g. diabetes mellitus). Key Messages Adequately maintaining prostheses is influenced by a number of ...Read More »
This video presentation is available through the School of Dentistry at the University of Michigan The video is presented by Dr. Jeffrey Shotwell, Associate Professor Emeritus of Dentistry, Department of Prosthodontics, School of Dentistry Context Determine and mark the physical location of the implants on the model. Block the model art to make the x-ray and surgical guides. The barco aspect of the redraft guide is contoured to simulate where the final gingival margin is preferred to end up on the restoration. Watch the video Do you need further information on this topic? Do you have any comments or ...Read More »
This Urgent care Scenario (USC) is presented by the JCDA Oasis Team in collaboration with Dr. Samer Nuwwareh. The USC is also available through the Oasis Help system Food impaction is the forceful wedging of food into the periodontium by occlusal forces. It may occur as a consequence of gingival tissue recession or disease, caries, severe attrition, plunger cusp, or inappropriate interproximal contact and clearance. Resources Gastaldo JF, Cury PR, Sendyk WR. Effect of the vertical and horizontal distances between adjacent implants and between a tooth and an implant on the incidence of interproximal papilla. J Periodontol. 2004;75(9):1242-6. Hancock EB, Mayo ...Read More »
In this short video (2:36), Dr. Bob Loney, Professor and Chair of the Dental Clinical Sciences Department at the Faculty of Dentistry, Dalhousie University, demonstrates a technique that provides a bubble-free impression that won’t distort. Paint the impression tray with adhesive. Pack and remove retraction cord. Inject light-body polyvinyl siloxane impression material all around the completed crown preparation. ensuring to capture the crown margins. Squeeze some light-body material on to a pad and coat it over the length of a lentulo spiral filler on a contra-angle slow speed handpiece. Place the coated lentulo spiral filler down the canal where its ...Read More »
In this short video (1:56), Dr. Bob Loney, Professor and Chair of the Dental Clinical Sciences Department at the Faculty of Dentistry, Dalhousie University, demonstrates how to remove gutta percha from a root canal in order to prepare an adequate post space to support a restoration on an endodontically treated tooth. Use non-end cutting drills to prepare the post space. Always start with the smallest size of Gates Glidden drill or Peeso reamer and work up to the size required to accommodate the desired size of a post. Size the instrument, referring to a radiograph of the tooth ...Read More »
How is the “Dahl appliance” used in the treatment of severely worn maxillary anterior teeth prior to reconstruction?
This question was submitted by a general dental practitioner: Does anyone have experience with the “Dahl appliance” used in the treatment of a severely worn maxillary anterior teeth prior to reconstruction? Dr. Effrat Habsha, Prosthodontist at Prosthodontic Associates offered this quick initial response: The Dahl Concept and the Dahl Appliance The Dahl Concept refers to the relative axial tooth movement that is observed when a localized appliance or localized restorations are placed in supra-occlusion and the occlusion re-establishes full arch contacts over a period of time. This concept can be achieved with a Dahl appliance, which refers to any interim restoration or prosthesis ...Read More »
All-ceramic dental crowns VS. metal-ceramic dental crowns: what is the clinical and cost effectiveness?
This Rapid Response is produced by the Canadian Agency for Drugs and Technologies in Health (www.cadth.ca) Report in Brief (PDF) Full Report (PDF) Key Findings The short term (< 5 years) survival of all-ceramic crowns when used for anterior teeth is comparable to porcelain fused to metal crowns. Summary of Findings Dental Crown Survival Posterior all-ceramic crowns fabricated from alumina, reinforced glass-ceramic, zirconia, or lithium disilicate had comparable survival rates to posterior PFM crowns (< 5 years analysis). InCeram and glass-ceramic, ...Read More »