Knoop hardness depth profiles and compressive strength of selected dental composites polymerized with halogen and LED light curing technologies.

Knoop hardness depth profiles and compressive strength of selected dental composites polymerized with halogen and LED light curing technologies. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Knoop hardness depth profiles and compressive strength of selected dental composites polymerized with halogen and LED light curing technologies. Abstract Text:

After the first light-emitting diode (LED) light curing units (LCUs) became available commercially, a comparison of mechanical properties between materials polymerized with conventional halogen lamps and this new technology was required. This study, therefore, investigated the curing performance of two conventional commercial halogen LCUs (Translux CL, Spectrum800), a custom-made LED LCU prototype, and one of the first commercially available LED LCUs (LUXoMAX). The Spectrum800 was adjusted to a similar irradiance to the custom-made LED LCU prototype. Both technologies were compared by measuring compressive strength and Knoop hardness depth profiles for selected dental composites polymerized for 20 or 40 s. Four dental composites (Z100, Spectrum TPH, Solitaire2, and Definite) were used. Two of these composites (Solitaire2 and Definite) contain co-initiators in addition to the standard photoinitiator camphorquinone. In general, the material hardness obtained with the LUXoMAX was statistically significantly (p < 0.05) lower at the depths of 0.1, 1.0, 1.9, and 3.1 mm, for all composites and curing times, than for the other three LCUs. The LED LCU prototype achieved, with one exception, up to a depth of 1.9 mm a material hardness for the composites Z100, Spectrum TPH and Solitaire2 that was not statistically significant different (p < 0.05) from the hardness obtained with the halogen LCUs. At a greater depth (3.1 mm), however, the LED LCU prototype showed statistically significantly lower hardness values than the halogen units. The compressive strength test showed at a 95% confidence level that similar compressive strengths were achieved with the LCUs LUXoMAX and Spectrum800, and the Translux and LED LCU prototype.

Knoop hardness depth profiles and compressive strength of selected dental composites polymerized with halogen and LED light curing technologies. Publishing Authors By Initials

For similar dentistry: technology, dental research abstracts see: dentistry: technology, dental research

PUBMED ID PMID:

MEDLINE DATE:

Knoop hardness depth profiles and compressive strength of selected dental composites polymerized with halogen and LED light curing technologies. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of biomedical materials research

VOLUME: 63

Page Numbers: 729-38

Journal Abbreviation: J. Biomed. Mater. Res.

ISSN: 0021-9304

DAY: 10

MONTH: 03

YEAR: 2002

Knoop hardness depth profiles and compressive strength of selected dental composites polymerized with halogen and LED light curing technologies. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 112726

Knoop hardness depth profiles and compressive strength of selected dental composites polymerized with halogen and LED light curing technologies. Keywords Mesh Terms:

KEYWORDS: Technology, Dental

MESH TERMS: instrumentation

Chemical & Substance for Abstract: Knoop hardness depth profiles and compressive strength of selected dental composites polymerized with halogen and LED light curing technologies. Information

Substance Name: Dental Materials

Registry Number: 0

Grant and Affiliation Information for Knoop hardness depth profiles and compressive strength of selected dental composites polymerized with halogen and LED light curing technologies.

AFFILIATION: Department of Materials Science and Technology, Friedrich-Schiller-University Jena, Löbdergraben 32, D-07743 Jena, Germany.

Country: United States

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: J Biomed Mater Res

REFSOURCE: J Biomed Mater Res. 2003 Feb 15;64(2):13

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Knoop hardness depth profiles and compressive strength of selected dental composites polymerized with halogen and LED light curing technologies Related Publications

• Biological materials: Fishing for compliance.
• Controlled self-assembly and templated metallization of fibrinogen nanofibrils.
• Growth of osteoblast-like cells on biomimetic apatite-coated chitosan scaffolds.
• Influence of different light curing units on the cytotoxicity of various dental composites.
• Knoop hardness depth profiles and compressive strength of selected dental composites polymerized with halogen and LED light curing technologies.