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At least 253 records · Page 14Linked to original sources
PubMed2005

Color stability of provisional crown and fixed partial denture resins.

STATEMENT OF PROBLEM: Provisional resins are used extensively during fixed prosthodontic treatment and exhibit varying degrees of color change/discoloration over time. Data are needed to help predict color stability of provisional resins. PURPOSE: The purpose of this in vitro study was to measure the color change of 12 provisional prosthodontic materials after immersion in artificial saliva and artificial saliva-coffee solutions for 1, 2, and 4 weeks. MATERIAL AND METHODS: Twelve provisional materials were studied. Methacrylates consisted of Alike, Jet, Temporary Bridge Resin, Unifast, and Zeta CC. Bis-acryl resins included Instatemp, Integrity, Luxatemp, Protemp Garant, Provipont, Provitec, and Temphase. Ten specimens (25.4 mm x 25.4 mm x 2.4 mm) of each material were fabricated. Five specimens were stored at 37 degrees C in artificial saliva and 5 were stored in a solution of artificial saliva (400 cc) and coffee (800 cc). Baseline color was measured using a colorimeter. Further color measurements were made after 1, 2, and 4 weeks of immersion. CIE L *a *b * values were recorded and color differences (DeltaE) between baseline and each storage interval were calculated using a 2-way ANOVA with Bonferroni adjustment for multiple comparisons in conjunction with an overall alpha=.05. RESULTS: Results indicated the presence of strong interaction between material and storage solution regardless of the aspect of color considered (P<.0001 for DeltaE, DeltaL *, Deltaa *, and Deltab *). Coffee solution relative to saliva solution had the most significant impact on color change for Luxatemp, Protemp, and Temphase materials at 4 weeks, but the greatest overall color change for both coffee and saliva solutions was found for Provipont (DeltaE=9.40 coffee; 8.51 saliva) and the least overall color change for both solutions was found for Zeta CC (DeltaE=0.31 coffee; 0.23 saliva). CONCLUSIONS: Under the conditions of this study, 12 provisional crown and fixed partial denture resins demonstrated varying tendency to discolor over a range of time periods when immersed in artificial saliva and artificial saliva-coffee solutions.

Acrylic Resins↗
PubMed1998

Planning the transition to a comprehensive implant rehabilitation: a case report--Part I.

When the edentulous condition has existed for many years, extensive ridge resorption may complicate the ability to function with a conventional prosthesis. Implant therapy in conjunction with bone augmentation procedures may provide new options for the predictable restoration of the edentulous state. However, complex implant reconstruction may place considerable stress on the patient's ability to function throughout therapy. Providing stable interim prostheses and smooth transitions between procedures may alleviate the problem. This can be accomplished only with extensive diagnosis, treatment planning, and the judicious use of transitional prostheses. The first part of this case report focuses on the planning stages of a complex implant dental rehabilitation.

Aged↗
PubMed2000

Immediate loading of implants in partially and fully edentulous jaws: a series of 27 case reports.

BACKGROUND: The concept of immediate loading of dental implants has been researched in animal and man. High predictability with titanium screw implants can be expected under certain circumstances. Delayed loading, which is empirically based, may offer roadblocks to success in the complex case. Micromotion under a denture, retention of compromised teeth, and the necessity for multiple implant surgeries complicate the situation. The present study was undertaken to demonstrate whether in partial and fully edentulous patients, titanium screw implants may be installed and loaded within 72 hours. METHODS: The study included 27 jaws (23 mandibles and 4 maxillas) in patients who refused to wear a denture or were told of the possibility of immediately loading their implants. Criteria similar to delayed loading was utilized. The patient had to have adequate volume and density for a minimum of 4 (10 mm) implants in the mandible and 6 in the maxilla, in addition to other requirements. After a thorough presurgical evaluation by the restorative dentist, a template and heat-cured/metal-reinforced provisional were fabricated. Following fixture installation, either the fixed provisional was placed or an impression was taken, and the provisional was seated within 72 hours. Once the temporary was placed, it remained until osseointegration was complete. RESULTS: Success rates similar to those in delayed loaded cases may be expected (95%). Fewer sandblasted/acid-etched titanium screws were lost than machined titanium screws. All patients went on to completion of their original prosthetic prescription. CONCLUSIONS: Patients who are partially or fully edentulous may predictably be restored with fixed implant prostheses immediately upon fixture placement if certain parameters are met.

Aged↗
PubMed1996

Enhanced aesthetics using provisionalization.

The proper fabrication of provisional restorations is integral to the overall success of restorative dentistry, as these templates are the initial architecture for the completed case. In a clinical setting, restorations may be utilized for an extended period, during which time the clinician and patient must feel confident. Due partially to a new generation of dental materials with unique properties, provisionalization can be predictably achieved. This article reviews the clinical criteria for the fabrication of interim restorations using a light cure/dual phase temporary crown and bridge material (Provipont DC, Ivoclar Vivadent, Amherst, NY) and its effect on the overall success of restorative procedures, including anterior and posterior restorations.

Bisphenol A-Glycidyl Methacrylate↗
PubMed1994

Provisional restorations using the Provipont system.

Pending the fabrication of permanent restorations, temporary restorations are used to maintain the function and provide the necessary information for accurate fabrication of permanent restorations. Therefore, the quality and appropriateness of materials used in temporary restorations are important to the final results. This article introduces a new material system for temporary restorations. A case report is used to illustrate the technique and the discussion.

Bisphenol A-Glycidyl Methacrylate↗
PubMed1990

Provisional restoration for a patient with cleft lip and palate: a clinical report.

A method for designing and fitting a provisional restoration for a patient with a cleft lip and palate was described. The provisional prosthesis provides an alternative treatment option that allows the dentist to plan the definitive restoration while providing the patient with a temporary but esthetic and functional restoration.

Adolescent↗