Search PubMed⌕ Search
Home/Archive/PubMed

PubMed · 12089766

The C-POST system.

J Wennström
View original source ↗Export metadata ↓

Abstract

This article represents a clinical report from daily experience with the C-POST system, a carbon-fiber post for core build-up. The C-POST was invented in France in 1988 and introduced in Sweden in 1992. When I first started using the system, little literature about it had been published. Because the C-POST fits well in the modern bonding concept, it has become my therapy of choice. In my practice, more than 900 treated teeth have been registered in a computer so that treatment progress can be followed. Every treated tooth was registered according to the type of primer, cement, core material, number of posts, and type of prostheses used. The prosthetics included large composite fillings, porcelain crowns, and/or metal crowns or bridges from 3 to 12 units. Of the 900 treated teeth, 173 of them are between 3 and 4 years old, 2 contain fractured roots, and 1 had a post fracture. This article describes how to fabricate a C-POST core build-up and contains clinical hints and advice. Other applications for the post, such as splinting, bridges, and repair of fixed prosthodontics and vital teeth, are discussed.

Explore related subjects

CarbonCarbon FiberCementationComposite ResinsCrownsDental AlloysDental BondingDental CementsDental MaterialsDental PorcelainDental Prosthesis DesignDentin-Bonding AgentsDenture, PartialEpoxy ResinsFollow-Up StudiesHumansPost and Core TechniqueRoot Canal TherapyTooth Preparation, ProsthodonticJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

J Wennström. 1996. The C-POST system.. https://pubmed.ncbi.nlm.nih.gov/12089766/

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

KEEP EXPLORING

Related citations

PubMed2025

Phenotypic profiling of carbon utilization of Pectobacterium brasiliense (Pbr1692).

Pectobacterium brasiliense 1692 (Pbr1692) is a necrotrophic pathogen that infects many crops such as potatoes and ornamental plants and derives nutrients from degraded plant tissue. Previous studies have identified Pbr1692 genes required for ecological fitness and virulence, however there is a lack of information on nutrient utilization in Pbr1692. Carbon source utilization profiling in Pbr1692 could provide a platform to decipher its metabolic flexibility and adaptation. This study assessed the nutrient utilization of Pbr1692 in different carbon sources, using Biolog Phenotypic Microarray (PM). An array of carbon sources utilized by Pbr1692 were identified, 32 carbohydrates and 8 carboxylic acids were among the preferred carbon nutrients utilized by Pbr1692. The PM results also revealed that the citric acid cycle, amino acid metabolism, and pentose phosphate metabolic pathways might be used to produce energy for Pbr1692. In addition, growth of Pbr1692 cells in minimal medium supplemented with citric acid, glucose, and aspartic acid retained the typical rod shape, suggesting that nutrient variation did not influence Pbr1692 cell morphology adaptation. This study provides an understanding on the adaptation of Pbr1692 and lays a foundation for understanding carbon metabolism of Pbr1692.

Carbon↗
PubMed2003

The infrared fundamental intensities and polar tensor of CH3NC.

The molecular force field and polar tensor of methyl isocyanide have been determined from its gas phase vibrational frequencies and infrared intensities. Quantum chemical results from MP2(FC), B3LYP and quadratic configuration interaction calculation including single and double substitutions procedures using a 6-311 + +G(3d,3p) basis set have been used to determine the signs of the dipole moment derivatives with respect to the normal coordinates as well as estimate individual fundamental intensities of the overlapped v1-v5 and v3-v6 band systems. Principal component graphical representations of the A1 and E symmetry polar tensor elements were useful in determining preferred sets of tensor elements. The mean dipole moment derivative (GAPT charge) of the methyl carbon in CH3NC, 0.347 e, is between the corresponding values in CH3CN, 0.110 e, and CH3F, 0.541 e. The mean dipole moment derivatives obtained here indicate the correct 1s methyl carbon ionization energy as 293.35 eV which is 0.98 eV higher than the corresponding ionization energy of the terminal atom.

Carbon↗
PubMed2003

Vibrational spectroscopic studies on the natural product, columbianadin.

NIR-FT Raman and FT-IR spectra of columbianadin, extracted from seeds and roots of Heracleum candolleaum, were recorded and analyzed. The vibrational frequencies of the compound have been computed using semi-empirical AM1 method and compared with experimental values. The C=O stretching frequencies of the carbonyl groups have been lowered due to conjugation. The CH stretching and bending vibrations of CH3 groups of the ester part indicate the presence of hyperconjugation effect. Characteristic ring vibrations have also been identified.

Carbon↗