In vitro investigation of the effect of preheating, thermal cycling, and different chewing environment temperatures on the wear of dental composite resins

This in vitro study analyses the biochemical interaction between saliva and three types of dental composite resins (a direct resin, an indirect resin and a dual-cure resin used for cementation of indirect dental restorations). The resin samples were obtained following a specific protocol and in line with the producers� recommendations; the resin samples were incubated with saliva samples collected from 19 healthy volunteers. The obtained results showed that the tested composite resins did not produce significant changes in oxidative stress parameters that were analysed (albumin, uric acid, GGT / gamma glutamyl transferase, OXSR-1 / oxidative stress responsive kinase 1) and do not influence the inflammatory salivary status reflected by the levels of IL-6 - an inflammatory marker.

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The morphological effect of calcium phosphates as reinforcement in methacrylate-based dental composite resins on mechanical strength through thermal cycling

Ceramics International ◽

10.1016/j.ceramint.2017.07.202 ◽

2017 ◽

Vol 43 (16) ◽

pp. 14389-14394 ◽

Cited By ~ 9

Author(s):

Yu-Ren Wu ◽

Chin-Wei Chang ◽

Chia-Ling Ko ◽

Hui-Yu Wu ◽

Wen-Cheng Chen

Keyword(s):

Mechanical Strength ◽

Thermal Cycling ◽

Calcium Phosphates ◽

Composite Resins ◽

Dental Composite ◽

Morphological Effect ◽

Dental Composite Resins

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Human and rat mononuclear cell proliferation show different sensitivity,in vitro, to single constituents of dental composite resins

Journal of Biomedical Materials Research ◽

10.1002/1097-4636(2000)53:6<651::aid-jbm6>3.0.co;2-b ◽

2000 ◽

Vol 53 (6) ◽

pp. 651-657 ◽

Cited By ~ 4

Author(s):

Gunilla Aronsson ◽

Ulf I. Dahlgren ◽

Stig Karlsson

Keyword(s):

Cell Proliferation ◽

Mononuclear Cell ◽

Composite Resins ◽

Dental Composite ◽

Dental Composite Resins

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Fluorescence and Opalescence of Two Dental Composite Resins

European Journal of Dentistry ◽

10.1055/s-0039-1696899 ◽

2019 ◽

Vol 13 (04) ◽

pp. 527-534 ◽

Cited By ~ 3

Author(s):

Masoomeh Hasani Tabatabaei ◽

Alireza Mahmoudi Nahavandi ◽

Sotude Khorshidi ◽

Sedighe Sadat Hashemikamangar

Keyword(s):

Experimental Study ◽

Uv Light ◽

Analysis Data ◽

Composite Resins ◽

Dental Composite ◽

White Background ◽

Restorative Dentistry ◽

Dental Restorations ◽

Dental Composite Resins

Abstract Objective Lifelike esthetic appearance of dental restorations is among the main goals in restorative dentistry. This study aimed to assess and compare the opalescence and fluorescence of two dental composite resins. Materials and Methods This in vitro experimental study evaluated the A2 shade of Filtek Z350 XT Enamel, Filtek Z350 XT Dentin, Aelite Aesthetic Enamel, and Aelite All Purpose Body composite resins. Composite discs were fabricated with 10 mm diameter and 0.5 and 1 mm thicknesses (n = 2) using a plexiglass mold and subjected to colorimetry. The color parameters were determined according to the International Commission on Illumination (CIE) L*a*b* system using a spectrophotometer. The fluorescence and opalescence were also measured and reported separately for 0.5 and 1 mm thicknesses of Z350, Aelite Body, and Enamel composite resins. To determine the opalescence, the color of samples in the reflectance mode was measured using a calibration cylinder and in the transmittance mode in presence of 100% ultraviolet (UV) light. To determine the fluorescence, the color of samples against a white background in the reflectance mode in presence or absence of 100% UV light was measured. Statistical Analysis Data were analyzed using SPSS via three-way analysis of variance and independent t-test. Results The fluorescence of 0.5 mm thickness of all composites was higher than that of 1 mm thickness (p < 0.05). The fluorescence of Aelite was higher than that of Z350 (p < 0.05). The fluorescence of Aelite Enamel was higher than that of Aelite Body irrespective of their thickness, but the results were opposite for Z350 (p < 0.05). In Aelite composite, opalescence increased by an increase in thickness (p < 0.05). The opalescence of Aelite was significantly higher than that of Z350 (p < 0.05). The opalescence of 0.5 mm thickness of Aelite Enamel was higher than that of Aelite Body, while the opalescence of 1 mm thickness of Z350 Body was higher than that of Z350 Enamel (p < 0.05). Conclusion Thickness, type, and brand of composite resins affected their fluorescence and opalescence.

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