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Results for “Denture Rebasing”

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At least 415 records · Page 23Linked to original sources
PubMed2000

Simplified procedure for replacement of retentive clips in a bar-retained implant overdenture.

Replacing the retentive elements in a bar-retained overdenture can be a difficult and time-consuming procedure. This article describes an impression procedure that allows the matrices in a bar-retained implant overdenture to be replaced in the laboratory using a heat-cured rebase procedure. Long waxing screws are used, which allows the bar to be removed in the rebase impression and incorporated in a new master cast. After completion of the laboratory phase, the bar is screwed back onto the implant abutments and the denture, with new retentive matrices, is inserted.

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PubMedDate not supplied

[The masticatory efficiency test in evaluation of the functional value of Rehm rebased newly made total dental prostheses].

The aim of the study was to determine the functional value of unrebased, rebased by Rehm and new complete dentures and compare the time of initial functional adaptation of patients to rebased and new complete dentures. The study included 72 subjects. The functional value of complete dentures was estimated by the test of masticatory muscles bioelectrical activity, by the test of masticatory efficiency and by the test of maximal physiological load. On the basis of the study it was concluded that the complete dentures rebased by Rehm were worthier in function than the unrebased ones, and the period of initial functional adaptation was missing. In the subjects with a pair of newly made complete dentures, functional tests revealed the reduction of the initial values after the new dentures were delivered. During the examination interval progressive dynamics with the tendency of establishing the optimal functional value and the initial functional adaptation was observed after 21 days.

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PubMed2006

Physical properties of a new denture lining material containing a fluoroalkyl methacrylate polymer.

STATEMENT OF PROBLEM: A new fluoride-containing, methacrylate-based denture lining material has been introduced. Because of the fluoride content, this material is expected to demonstrate low water sorption and solubility and high stain resistance, but these attributes remain untested. PURPOSE: This study investigated a wide range of clinically relevant properties for a new fluoroalkyl methacrylate denture base liner product (Maxfit) and compared these properties with those of 3 other commercial products. MATERIAL AND METHODS: Four denture lining materials were tested: Maxfit, Kooliner, Tokuyama Rebase (fast set), and Denture Liner. Water sorption (microg/mm(3)) and solubility (microg/mm(3)) were tested according to International Organization for Standardization (ISO) Standard No. 1567. Stain resistance was evaluated by measuring color change (DeltaE) after immersion in 2 solutions (coffee and turmeric solution). Microhardness was determined using Knoop indentation testing according to American National Standards Institute/American Dental Association Specification No. 17. Relined denture fit was evaluated by measuring the gap (mm) occurring between the relined denture base and the cast after polymerization. Shear bond strength (MPa) to denture base materials (polymethyl methacrylate, cobalt-chromium alloy, and titanium) was tested according to ISO Standard No. 11405. Data were statistically analyzed using nonparametric Kruskal-Wallis (alpha=.05) and Mann-Whitney U tests combined with the Bonferroni correction (alpha=.008). RESULTS: Maxfit showed the lowest water sorption and solubility (8.0 +/- 0.1, 0.5 +/- 0.1 microg/mm(3), respectively). The color change from coffee immersion of Maxfit was significantly less than Tokuyama Rebase and Denture Liner, and significantly less than Tokuyama Rebase and Denture Liner in a turmeric solution (P<.001). Knoop hardness of Maxfit (8.66 +/- 0.51) was higher than Kooliner and Tokuyama Rebase (P<.001). The relined denture fit using Maxfit was not different from other materials. Significantly higher shear bond strength to denture base resin was noted for Maxfit compared to Tokuyama Rebase and Denture Liner (P<.008). CONCLUSIONS: The new fluoroalkyl methacrylate-based denture liner (Maxfit) showed the lowest water sorption and solubility, and superior stain resistance. In spite of the addition of the fluoride content, this product exhibited no deterioration in physical properties, such as surface hardness, fit of the relined denture, and shear bond strengths to denture base materials tested.

Adhesiveness↗
PubMed1967

Rebase and regret?

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Dentist-Patient Relations↗