The clinical effectiveness of tissue conditioners and functional impression materials is influenced by their gelation and flow properties. Laboratory tests were previously conducted that simulated the conditions of clinical use to the extent possible on six commercial intraoral-gelling resilient...

Controlled tests on the physical properties of four tissue-conditioning materials were conducted. The findings point to the advisability of leaving the tissue-conditioning materials used for functional impressions in the mouth for an interval of time ranging from 15 to 45 minutes, and then remov...

When old dentures have pathologically deformed the soft tissues they cover, these tissues must be allowed to heal before new dentures are made over them. This can be accomplished by eliminating the causal factors and by lining the old dentures with a temporary soft liner that allows the soft tis...

Statement of Problem. Tissue conditioners can be used to condition abused tissues, record functional impressions, make temporary relinings, and for other clinical applications, mainly because of their specific viscoelasticity. However, little information is available on the rheology of the mater...

ObjectivesAn alcohol-free tissue conditioner based on a n-butyl methacrylate/i-butyl methacrylate copolymer has recently been developed. The purpose of the present study was to compare some key properties of the new tissue conditioner with those of poly(ethyl methacrylate)-based conventional mat...

Statement of Problem. Little is known about the influence of tissue conditioners on physical property alteration of denture base resins. Purpose. This study evaluated the influence of a variety of commercial tissue conditioners on alteration of viscoelastic properties of a heat-polymerized dentu...

Objectives. In order to assess the estrogenic activities of plasticizers used in tissue conditioners and four commercial tissue conditioners, we carried out in vitro tests.Methods. Seven plasticizers and two metabolites were diluted to concentrations ranging from 10−9 to 10−4 M. Four commercial ...

SummaryObjectivesAn alcohol-free tissue conditioner based on a n-butyl methacrylate/i-butyl methacrylate copolymer has recently been developed. The purpose of the present study was to compare some key properties of the new tissue conditioner with those of poly(ethyl methacrylate)-based conventio...

Dental wear is a multifactorial progressive condition of hard tissue loss, often decreasing the vertical dimension and leading to functional and esthetic consequences. Regaining space by using contemporary restorative materials has enabled less invasive treatment options. This clinical report de...

The analysis of bacterial volatile organic compounds has gained attraction as a non-invasive way to identify disease-causing organisms, given that bacteria have unique metabolisms and volatile metabolic byproducts. In the present research, different adsorbent materials (Carbopack Y, X, B, Carbox...

Two analytical techniques – online Gas Chromatography coupled with Flame Ionization Detector (often used method for VOCs monitoring) versus Selected Ion Flow Tube coupled with Mass Spectrometry (a more recent technique based on direct mass spectrometry) – were compared in association to an ozo...

Currently, forensic drug experts are facing chemical identification challenges with the increasing number of new isomeric forms of psychoactive substances occurring in case samples. Very similar mass spectra for these substances could easily result in misidentification using the regular GC–MS s...

ObjectivesTo explore the effect of soft denture liners on the masticatory performance and muscle activity of edentulous patients wearing complete dentures, as determined by using objective measurement methods.

Statement of problemA soft lining is applied under a removable prosthesis for various reasons. The porosity of the lining material may increase colonization by microorganisms and cause tissue inflammation.

Silicone-based soft liners can be useful for patients who have difficulty to tolerate the hard-based dentures. However lack of adhesion to the denture base resin can be a problem that limits their clinical use. This study evaluated the tensile bond strengths (TBS) of four silicone soft liners (G...

This study reports an analytical approach by gas chromatography and high-resolution mass spectrometry (HRMS) intended to be used for investigation of non-targeted environmental contaminants in honeybees. The approach involves a generic extraction and analysis with two GC-HRMS systems: time-of-fl...

This study evaluated the antimicrobial and physical properties of silver-soft liner nanocomposites (Ag-SLN). Polymerized acrylic soft denture liner disk specimens containing 0 (control), 1500, 3000, or 6000 mg/L of silver nanoparticles were placed on the flat bottom of the separate 12-well cell ...

ObjectivesThis study was designed to examine the effect of monopoly on the softness of a soft liner at various time intervals to save cost and time during replacement of liner.

The method presented in this research allows the development of detailed chemical composition of hydrocarbon mixtures (petroleum and non-petroleum based) in the range of C6 to C33 (69 to 475 °C) via comprehensive two-dimensional gas chromatography (GC × GC) with a flame ionization detector (FI...

PurposeThe purpose of this study was to determine the durability of the peel bond of commercial resilient denture liners to a denture base resin using a thermal cycling test.