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Curing depth of four composite veneering materials polymerized with different laboratory photo-curing units


, : Curing depth of four composite veneering materials polymerized with different laboratory photo-curing units. Journal of Oral Rehabilitation 25(5): 348-352

Post-curing properties of composite materials are influenced by the type of base monomer, activation system, filler content, and also by the type of light source employed. This study examined curing depth of four composite veneering materials polymerized by means of two different high-intensity photo-curing units for the purpose of evaluating the curing performance of the combinations of composite material and photo-curing unit. Two microfilled and two hybrid composite materials designed for prosthetic veneer were assessed. The composite materials were cured using two photo-curing units, one with a xenon light source and one with two metal halide light sources, and exposure periods varied from 20 to 90 s. Curing depth of the materials was determined with a scraping technique described by the International Organization for Standardization (ISO 4049). Three-factor analysis of variance revealed that the depth of cure was influenced by the type of composite material as well as by the photo-curing unit, and also by the exposure period (P = 0.0001). A microfilled composite material (Dentacolor) demonstrated the greatest depth of cure (4.69 mm) after 90 s irradiation with a metal halide unit (Hyper LII). Of the two photo-curing units, the metal halide curing unit consistently exhibited greater depth of cure than the xenon curing unit (Dentacolor XS). Longer exposure increased the depth of cure for all combinations.

US$29.90

PMID: 9639158


Other references

Scherrer, H.; Turpin, G.; Darbois, Y.; Metzger, J.; de Gennes, J.L., 1986: Pregnancy and hyperprolactinemia. Review of therapeutic measures apropos of a series of 35 patients. Forty-eight pregnancies were observed in 35 patients with hyperprolactinaemia divided into 3 groups according to their initial radiological appearances: normal sella turcica (Group I, n = 11), microadenoma (Group II, n = 12) or macroadenoma withou...

Kim, B.; Park, J.; Son, J.; Lee, J.W., 2017: Catalyst-free production of alkyl esters from microalgae via combined wet in situ transesterification and hydrothermal liquefaction (iTHL). This study introduces a process combining wet in situ transesterification and hydrothermal liquefaction (iTHL) for fatty acid ethyl ester (FAEE) production from intact microalgae, Nannochloropsis gaditana without catalyst at temperatures higher th...

Sever Prebilic, M.; Prebilic, D.; Prebilic, I.; Sever, B.; Host, I.; Uravic, M.; Nacinovic Duletic, A., 1998: Surgical interventions in patients with haemophilia and intraabdominal bleeding of uncommon localisation. British Journal of Haematology 102(1): 136, July 1

Haines, A.L., 1957: The effect of estrogen on cartilage and bone in castrate C3H mice. Yale Journal of Biology and Medicine 30(2): 121-136

Ohanneson, F.; Murphy, W.R., 1948: Favorable response to streptomycin in tuberculous cystitis. One case is discussed, describing the use of streptomycin in tubercular cystitis, with severe reactions to the drug. After the first treatment with streptomycin (750 mg./day for 5 days) the patient improved somewhat, but tubercle bacilli were stil...

Voegel-Turenne, C.; Benammar, S.; Allaf, K., 2001: Evolution of the mechanical, textural and rheological characteristics of the Granny Smith apple during drying. The evolution of five mechanical, textural and rheological properties (stiffness, resistance to deformation, elasticity, viscosity and glass transition temperature) of several partially dehydrated Granny Smith apple samples was observed versus wat...

Trakhtman, N.N.; Manita, M.D., 1966: The action of chlorine on 3,4-benzpyrene in the chlorination of water. Gigiena i Sanitariia 31(3): 21-24

Chaline Jean; Michaux Jacques, 1969: Evolution and stratigraphic importance of arvicolids of the genus Mimomys in the plio-Pleistocene of France. Rodentia, two evolutionary lines, two faunal changes due to climatic fluctuations, Villafranchian boundaries.

Peris Martínez, C.; Aviñó Martínez, J.; Díaz-Llopis, M.; España Gregori, E.; Menezo, J.L.; Vayá, A., 2000: Branch retinal vein occlusion associated with the 20210 G-to-A prothrombin variant. To describe a case of branch retinal vein occlusion (BRVO) in a patient who tested positive for the 20210 A allele of the prothrombin (PT) gene. A 48-year-old man had visual loss in the right eye secondary to BRVO confirmed by ophthalmoscopy and f...

Anonymous, 1952: 2nd Congress of electroradiology of Latin culture, and 2nd Hispano-Portuguese Congress of radiology. La Presse Medicale 60(68): 1462-1464