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C&B Metabond--clinical applications (III).
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Surgical site preparation for a single-tooth implant restoration.
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Provisionals: not just temporaries.
When a provisional is to be worn for an extended period of time, the laboratory-processed provisional may be indicated because of its strength, wear-resistance and resistance to discoloration. A large selection of shades are available, resulting in better esthetics. The incisal blend gives the provisional a translucent effect. Office visits for repairs and maintenance will be minimized. If the patient has confidence after the provisional visit, he or she will have equal confidence in the final restoration. The only difference between the two should be the materials used.
Comparative in vitro study of apically extruded material after four different root canal Instrumentation techniques.
Forty newly extracted human upper central incisors were submitted to root canal instrumentation 1 mm from the apex using four different techniques: standard, step-preparation, crown-down, and ultrasound, with distilled and deionized water as the irrigating solution. The extrusion product was collected into a collecting device constructed for this purpose. Extrusion was calculated by the determination of the mass of extruded material. The step-preparation technique caused a larger amount of extrusion than the standard technique, which in turn caused greater extrusion than the crown-down and ultrasound techniques. All techniques used caused extrusion of material beyond the apical foramen.
Practical restoration of severely compromised vital teeth: case reports.
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Advances in endodontic surgery.
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Temporary dental restorative materials for military field use.
New temporary dental restorative materials are an important military requirement. This study compares the critical properties of the currently used temporary material, reinforced zinc oxide-eugenol (ZOE), with those of a glass ionomer restorative material (GI), a high-viscosity modified glass ionomer material (MGI), and two resin-modified glass ionomer materials (RMGIs). Properties tested included compressive and tensile strength, rigidity, hardness, bond strength, working and setting times, and storage stability. Ranked results for compressive strength, rigidity, and hardness were MGI > GI > RMGI > ZOE; for tensile strength they were RMGI > MGI > GI > ZOE; and for storage stability they were ZOE > MGI > GI > RMGI. Working and setting times were all within reasonable clinical limits, and bond strength was heavily dependent on tooth surface preparation. Although none of the materials tested met all of the ideal requirements, the high-viscosity glass ionomer material offers the most promise for military field use.
Application of composite resin for single-appointment anterior and posterior diastema closure.
Due to aesthetic and periodontal factors, patients often seek treatment to close diastemata. This condition may be eliminated by either direct or indirect techniques. Indirect techniques generally require multiple visits to facilitate the placement of laminate, crown, or bridge restorations, and involve significant financial expense. Direct techniques can be economical and successful, although they present unique challenges in the achievement of satisfactory proximal contacts and contours. This article describes three clinical techniques that may be employed to treat anterior and posterior diastemata in a single appointment.
Porcelain laminate veneers: Part I.
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A new CAD/CAM esthetic crown system.
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[The esthetics of the anterior teeth with the Inceram-Spinell system. The advantages and clinical procedure in the care of the anterior teeth using Inceram-Spinell crowns].
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Soft tissue management with metal-ceramic and all-ceramic restorations.
Many advances have been made in recent years to the science and the art of metal-ceramic and all-ceramic restorations. However, no matter how natural and lifelike such restorations may be, the final esthetic result is most dependent upon the health and level of the surrounding gingival tissues. The key to success is effective soft tissue management, and the goal of this soft tissue management has been to provide healthy gingival tissues covering sound, smooth restorative margins.
Rational use of contemporary all-ceramic crown systems.
There are a host of contemporary all-ceramic systems available today, as well as improved techniques for metal-ceramic restorations. Perhaps the most important factor in achieving predictable success with these restorations is excellent soft tissue management. Metal-ceramic restorations provide the most predictable service in terms of clinical longevity, versatility and prevention of wear to the opposing dentition.
Clinical experiences with bonded porcelain laminate veneers.
Bonded porcelain veneers can provide successful esthetic and functional long-term service for patients. The purpose of this article is to describe the authors' clinical experiences with veneers over the past decade and to outline the procedures required to achieve predictable success with this conservative esthetic restorative modality. It is hoped that the authors' experiences and those of others will encourage practitioners to consider more routine use of this type of restoration in many of their more complex reconstructive cases.
IPS Empress crown system: three-year clinical trial results.
The IPS Empress system is a highly esthetic hot pressed glass ceramic material for fabrication of single crowns. Adhesive cementation of the system not only contributes to the esthetics but is necessary for increased strength of the crown. The purpose of this prospective clinical trials was to evaluate the longevity of 75 adhesively cemented Empress full crowns. An additional aim was to assess the adhesive cementation methodology and potential side effects. At the three-year point, one molar crown fractured for a 1.3 percent failure rate. The resin cementation technique that was employed exhibited a low incidence of microleakage with few clinical side effects. There was a 5.6 percent incidence of post-cementation sensitivity, with all symptoms subsiding by eight weeks. None of the crowns in the study required endodontic therapy.
Restoring function with porcelain laminate veneers.
The ability of porcelain veneers to be conservative in dentistry has tremendous advantages for patients. Being less invasive with both the gingiva and pulp results in better gingival health, easier maintenance, and less postoperative sensitivity. The use of porcelain laminate veneers to reestablish function and enhance aesthetics results in minimally invasive restorations. The patient was very pleased with the results. With proper care, she will have many years of beauty and newly restored function.
Enhanced impression technique with radiosurgery.
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