Design of a cast bar reinforced provisional restoration for the management of the interim phase in implant dentistry.
Implant therapy is becoming the treatment of choice for the replacement of teeth in partially edentulous arches. The interim phase of implant treatment often presents particular problems because of the position of the remaining teeth, their periodontal status, and the loss of vertical dimension of occlusion. This case report will discuss the design and fabrication of a cast bar reinforced long-span provisional restoration based on a diagnostic wax-up to simplify the management of the interim phase. (+info)
Effect of polishing on cyclic fatigue strength of CAD/CAM ceramics.
The biaxial flexural strength and cyclic fatigue biaxial flexural strength of CAD/CAM ceramics polished with #220, 400, 600 and 1000 diamond pads were measured in an effort to determine the effect of surface roughness on fatigue behavior of dental ceramics. The surface roughness was improved after polishing with a smaller diamond grain pad. The flexural strengths of the specimens polished with #220, 400, 600 and 1000 diamond pad were 75.2, 76.6, 82.2, and 83.3 MPa, respectively; the fatigue flexural strength of those with #220, 400, 600 and 1000 were 53.0, 58.1, 60.0, and 61.5 MPa, respectively. Both the flexural and fatigue flexural strengths increased with improvement of surface profile. These results suggest the importance of polishing of dental ceramics for not only the static strength but also the cyclic fatigue strength. (+info)
Current trends in removable prosthodontics.
BACKGROUND: This article discusses trends in the demographics and treatment of the edentulous patient. It is clear that there still is a tremendous need for removable-prosthodontic services today. While the basic process of making dentures has changed little over the past several decades, new materials and techniques can help laboratories and clinicians provide functional, esthetic restorations that offer exceptional value to patients. Implant treatment is a tremendous adjunct to removable prosthodontics in the treatment of edentulous patients, but it is not within the financial reach of all dental patients. CLINICAL IMPLICATIONS: The clinical skills required to deliver excellent complete denture care are also paramount to successful implant prosthodontics (fixed and removable) and esthetic dentistry. Even so, the opportunities to develop these skills and the interest appear to be decreasing at the same time that the need is projected to increase. In service to our patients, the profession must examine this trend closely. (+info)
A new pattern mouth stick.
The motivation for the severely handicapped tetraplegic patient in using the mouth stick is quite considerable as through this simple oral aid they are able to carry out small jobs and be involved in social activities. We feel that this modified pattern mouth stick fulfils the aims which we require of it. (+info)
A modified technique for direct, fibre-reinforced, resin-bonded bridges: clinical case reports.
This article presents new modifications to the clinical technique of fabricating directly applied resin-bonded fibre-reinforced bridges. Torsional and flexural strength is achieved by means of a reinforced polyethylene fibre ribbon substructure surrounded by laminated layers of microhybrid and microfilled resins. The modifications provide a simple method for creating a better pontic-ridge relation and improved overall esthetics. Early clinical experience suggests that this technique has the potential to give patients a relatively conservative, esthetic and periodontally noninvasive alternative for anterior tooth replacement. (+info)
Complete denture covering mandibular tori using three base materials: a case report.
The torus mandibularis presents many challenges when fabricating a complete denture. The mucosa tends to be thin and will not tolerate normal occlusal loads on a denture. Large mandibular tori can prevent complete seating of impression trays and denture. To address this problem, we fabricated a new mandibular complete denture incorporating a combination of soft acrylic flanges and liners. (+info)
This article explains the mechanism of indirect retention for RPDs and discusses the factors which determine its effectiveness. Examples are given of designs which incorporate indirect retention. (+info)
This article describes the types and functions of connectors for RPDS. It also considers the relative merits and limitations of these connectors. (+info)