PMID: 11319734Apr 25, 2001Paper

Dimensional changes of dental impression materials by thermal changes

Journal of Biomedical Materials Research
K M KimS W Shin

Abstract

Dental impression materials for prosthodontic treatment must be easy to use, precisely replicate of oral tissue, be dimensionally stable, and be compatible with gypsum materials. The dimensional accuracy of all materials is affected by thermal changes; impression materials shrink during cooling from mouth temperature (37 degrees C) to room temperature (23 degrees C). Five kinds of light body addition-reaction silicone impression materials [Contrast (CT), Voco Co., Germany; Examix (EM), GC Co., Japan; Extrude (EX), Kerr Co., USA; Imprint II (IM), 3M Co., USA; Perfect (PF), Handae Chemical, Korea] were tested by making cylindrical specimens (6 mm diameter and 12 mm height). The thermal expansion of the impression materials was measured with a thermomechanical analyzer (TMA 2940, TA Instruments, USA) between 23-37 degrees C. Data were analyzed via the Mann-Whitney Usage Test. To simulate actual dental impressions, tooth and tray shapes were modeled to measure the linear shrinkage of impression materials at anterior and posterior locations. The thermal expansion of impression materials tested decreased as follows: CT >or= PF >or= EM >or= EX >or= IM (p < 0.05). The anterior region changed more than the posterior region for the same ...Continue Reading

References

Mar 1, 1992·Dental Materials : Official Publication of the Academy of Dental Materials·V FanoI Ortalli
Jan 1, 1994·The Journal of Prosthetic Dentistry·S GelbardN Stern
Jul 1, 1996·The Journal of Prosthetic Dentistry·A ThouatiP Behin
Aug 1, 1998·The Journal of the American Dental Association·J H PurkS H Hung

❮ Previous
Next ❯

Citations

Apr 27, 2010·The Journal of Prosthetic Dentistry·Markus BalkenholBernd Wöstmann
Sep 16, 2020·European Journal of Dentistry·Manuel Salvador Urcuyo AlvaradoMarine Ortiz Magdaleno
Mar 20, 2021·The Journal of Prosthetic Dentistry·Hanqi GaoJianguo Tan
Jan 1, 2012·Journal of Current Glaucoma Practice·Aruj K KhuranaAshok K Khurana
Jan 1, 2012·Journal of Current Glaucoma Practice·Dewang AngmoAnita Panda
Jan 1, 2012·Journal of Current Glaucoma Practice·Sushmita Kaushik, Surinder Singh Pandav
Jan 1, 2012·Journal of Current Glaucoma Practice·Anjani Khanna, Parul Ichhpujani
Jan 1, 2012·Journal of Current Glaucoma Practice·Mingguang HeYuzheng Jiang
May 14, 2019·The Journal of Prosthetic Dentistry·Efstratios PapazoglouVasileios Margaritis
Jan 1, 2012·Journal of Current Glaucoma Practice·P SathyanAnitha Anitha
Jan 1, 2012·Journal of Current Glaucoma Practice·Divjyot KaurGursatinder Singh
Jun 23, 2021·The Journal of Prosthetic Dentistry·Marta Revilla-LeónWael Att

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.