Pregled bibliografske jedinice broj: 31014
Polymerization kinetics of composites cured by low intensity blue superbright LED's
Polymerization kinetics of composites cured by low intensity blue superbright LED's // Journal of Dental Research (0022-0345) 78 (1999) ; 395(abstract 2319) / Herzberg, Mark C. (ur.).
Vancouver: International Association for Dental, Oral, and Craniofacial Research (IADR), 1999. (poster, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 31014 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Polymerization kinetics of composites cured by low intensity blue superbright LED's
Autori
Tarle, Zrinka ; Knežević, Alena ; Meniga, Andrej ; Šutalo, Jozo ; Pichler, Goran
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Journal of Dental Research (0022-0345) 78 (1999) ; 395(abstract 2319)
/ Herzberg, Mark C. - Vancouver : International Association for Dental, Oral, and Craniofacial Research (IADR), 1999
Skup
77th General Session of the IADR
Mjesto i datum
Vancouver, Kanada, 10.03.1999. - 13.03.1999
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
degree of conversion; composite resin; polymerization
Sažetak
Previous studies have shown many disadvantages of standard curing units influencing some important clinical properties of composite fillingsThe objective of this investigation was to evaluate the degree of conversion and temperature rise in composite samples illuminated by blue superbright light emitting diodes (LED) (Nichia, Japancompared to the conventional halogen lamps Heliolux GTE and Elipar Highlight. The temperature rise in the specimens was tested after 20 and 40 seconds polymerization using METEX Model M-3850D multimetar. The temperature rise of samples cured by blue LED varied from 4 to 11°C while for halogen lamps ranged from 8 to 17°C. The results of degree of conversion were obtained on the surface and at the deepth of 1.0 mm and were lower approximately 10% in case of even 66 times weaker blue LED. All the measurements were repeated five times. Statistics were performed using analysys of variance. The results obtained with experimental light source of minimal intensity were promising especially concerning low temperature rise in the samples.However, it is necessary to use more blue LEDs of 470 nm and focusing their light to ensure sufficient light intensity for improved curing. This study was supported by the Ministry of Science and Technology of the Republic of the Croatia.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Ustanove:
Institut za fiziku, Zagreb,
Stomatološki fakultet, Zagreb
Profili:
Andrej Meniga
(autor)
Zrinka Tarle
(autor)
Jozo Šutalo
(autor)
Goran Pichler
(autor)
Alena Knežević
(autor)