Influence of Light Source and Photopolymerization Distance on Composite Resin Microhardness
Journal Title: Journal of Dentistry and Oral Implants - Year 2016, Vol 1, Issue 2
Abstract
The present study evaluated in vitro the influence of two light sources in composite resin microhardness in different distances of photopolymerization. Two light sources were used (halogen, LED) to photopolymerize the composite resin (Filtek Z250; Esthet-X) in different distances surface (1,2,3 and 4 mm), totalizing 96 specimens. Microhardness Knoop test’ were made on the specimens top and bottom faces. The data were submitted to ANOVA and Fisher tests (α=5%). It was observed a significant difference (p<0.05) between the resins, in which Z250 presented higher values than Esthet-X (p<0.05). There was difference also between the halogen and LED, where the halogen showed better results with Z250 and the LED with Esthet-X. The top surface presented better value (p<0.05) compared to the bottom surface. It can be concluded that the light source and the photopolymerization distance influenced the composite resin microhardness, which it had lower proprieties with increase of the photopolymerization distance.
Authors and Affiliations
Fernanda Furtado Piras, Juliana Jendiroba Faraoni, Regina Guenka Palma-Dibb
Keywords
Related Articles
- EP ID EP331993
- DOI 10.14302/issn.2473-1005.jdoi-16-1079
- Views 145
- Downloads 0
Oral Ellis-Van Creveld Syndrome: A Brief Review of Literature and A Case Report
EVC syndrome is a rare autosomal recessive genetic syndrome which its exact prevalence is unknown. The main manifestations of EVC include condro-ectodermal dysplasia, polydactyly, congenital heart defects and tooth and n...
Anatomical Risk Factors Associated with Immediate Extraction Placement in the Posterior Maxilla: A Human Retrospective Cone-Beam Study
Purpose: The aim of the study was to analyze the spatial relationship between the sinus floor and the alveolar bone of maxillary premolars and molars in order to assess the amount of basal bone available for immediate e...
Composite Photopolymerization: Temperature Increase According to Light Source and Dentin Thickness
When a composite resin restoration is photopolymerized, a considerable amount of heat can be produced, potentially causing pulpal injury. Objective: Evaluate the influence of the type of light source and remaining dentin...
Changes in Gingival Crevicular Fluid Volume and Flow Rate During Orthodontic Treatment
Background: Gingival crevicular fluid (GCF) is regarded as a promising medium for detection of periodontal disease activity. bone loss is a major feature of periodontal disease, although we are unable to determine the t...
The Role of Helmet Use on Severity and Pattern of Maxillofacial Injuries Among Motorcycle Crash Victims Attending Mulago Hospital, Uganda
The objective of the study was to establish the role of helmet use on severity and pattern of maxillofacial injuries among motorcycle crash victims attending Mulago Hospital. This was descriptive cross sectional case ser...