PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 1058855

Polyurethane elastomer as a possible resilient material for denture protheses: a microbiological evaluation.

R Y Tang·J B Gonzalez·G D Roberts
View original source ↗Export metadata ↓

Abstract

A polyurethane elastomer was microbiologically evaluated in vitro for its potential use in resilient denture liners. Specimens were immersed in suspensions of ten selected oral microorganisms; this was followed by viable cell counts at intervals during a 16-week period. Results indicated that the polyurethane neither supported the growth of the organisms nor was it degraded.

Explore related subjects

CandidaCell CountDental MaterialsDenture LinersElasticityHumansMouthNeisseriaPolyurethanesStaphylococcusJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

R Y Tang, J B Gonzalez, G D Roberts. Polyurethane elastomer as a possible resilient material for denture protheses: a microbiological evaluation.. https://doi.org/10.1177/00220345750540050601

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed2026

Metabolic engineering of Candida yeasts for biotechnological applications.

Candida yeasts represent a versatile yet underexploited platform for industrial biotechnology. These yeasts utilize a remarkably broad range of carbon sources, particularly for hydrophobic carbon sources, coupled with robust growth and diverse biosynthetic capacities, making them promising hosts for sustainable production of chemicals, fuels, and proteins. Despite these advantages, industrial deployment of Candida species has been hindered by concerns regarding opportunistic pathogenicity and the historical lack of efficient genetic manipulation tools, leading to a substantial gap between metabolic potential and practical utilization. Recent advances in functional genomics, genome editing, and systems metabolic engineering are rapidly overcoming these barriers, enabling more precise and efficient strain development. In this review, we systematically summarize recent progress in the metabolic engineering of Candida species as microbial cell factories, with particular emphasis on expanding genetic toolkits, utilizting renewable and non-conventional carbon sources, and biosynthesizing high-value compounds. In addition, we propose a biosafety-oriented classification framework to support their safe industrial deployment. Finally, we discuss current challenges and emerging opportunities, emphasizing that the synergy of synthetic biology and artificial intelligence-driven design holds the key to unlocking the biotechnological potential of Candida yeasts.

Candida↗
PubMed1992

Luminescence from the yeast Candida utilis and comparisons across three genera.

Weak luminescence was detected from oxygenated liquid cultures of the yeast Candida utilis during two stages of its growth cycle. The first period of emission occurred during the exponential phase of growth and comprised an ultraviolet band (270-390 nm; ca 19 photons s-1 cm-2 of culture surface) and a visible band (450-620 nm; ca 68 photons s-1 cm-2). The second period of emission occurred late in the stationary phase of growth and was comprised almost entirely of a visible region band (450-620 nm; 6.8 x 10(2) photons s-1 cm-2). No luminescence was observed when the yeast was grown anaerobically. These observations are compared with those previously obtained for two other yeasts, Saccharomyces cerevisiae and Schizosaccharomyces pombe. The ratios of the intensities of the blue/red emissions in the stationary phase luminescences correlated with the ratio of the saturated/unsaturated lipid content for the three yeasts. This result provided further support for the claim that the stationary phase luminescence arises from the reactions associated with lipid peroxidation. A number of previously suggested sources of the exponential phase luminescence are discussed and rejected. Oxidative side reactions accompanying protein synthesis remain a possible source of that emission.

Candida↗
PubMed1992

Efficient electropulse transformation of intact Candida maltosa cells by different homologous vector plasmids.

Conditions for efficient and quick transformation by electroporation were developed in Candida maltosa. To investigate the efficiency of transformation with integrative as well as with autonomously replicating plasmids, a series of vectors was constructed for homologous transformation of this species. Transformants were obtained with different plasmids as covalently closed circular molecules and as linearized DNA. The influence of recipient strain and plasmid type as well as of cell number and parameters of the supplied electrical pulse on the transformation efficiency have been investigated. A maximum of 7000 transformants per 100 ng of plasmid DNA was reached. The efficiency of transformation was compared with that of the LiCl method.

Candida↗