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Long-term development of degree of conversion of bulk-fill composites during 7 days (CROSBI ID 706616)

Prilog sa skupa u časopisu | sažetak izlaganja sa skupa | međunarodna recenzija

Lapaš Barišić, Matea ; Par, Matej ; Gamulin, Ozren ; Pandurić, Vlatko ; Tarle, Zrinka Long-term development of degree of conversion of bulk-fill composites during 7 days // Acta stomatologica Croatica, 49, 2 / Marović, Danijela (ur.). 2015. str. 177-177

Podaci o odgovornosti

Lapaš Barišić, Matea ; Par, Matej ; Gamulin, Ozren ; Pandurić, Vlatko ; Tarle, Zrinka

hrvatski

Long-term development of degree of conversion of bulk-fill composites during 7 days

Aim: To determine the degree of conversion (DC) of two commercial composite materials (SDR/Dentsply and Filtek Bulk Fill/3M ESPE) and to monitor the long-term postcure increase of DC up to 7 days. Materials and methods: DC was determined by Raman spectroscopy at two measuring depths: 1 mm and 4 mm. For each material and each depth, 6 samples were prepared. The cylindrical samples with a 3 mm diameter and 6 mm height were light cured with irradiance of 1090 mW/cm2 for 20 s. DC was measured immediately after curing (0 days), 1 day post-cure and 7 days post-cure. During preparation and storage, the samples were kept at room temperature. Statistical analysis was performed using a dependent samples t-test. Results: DC values (%) for Filtek Bulk Fill amounted to (0 days/1 day/7 days): 56.8/65.8/ 70.5 at 1 mm depth and 44.4/54.4/54.4 at 4 mm depth. DC values of SDR amounted to 55.8/ 68.5/74.2 at 1 mm depth and 49.7/64.5/70.7 at 4 mm depth. Statistically significant DC increase was observed for Filtek Bulk Fill after 1 day and 7 days at 1 mm depth, while at 4 mm depth no further DC increase was observed after 1 day. For SDR, a trend of DC increase was observed at both depths, being marginally significant only at 4 mm depth. Conclusion: Filtek Bulk Fill and SDR presented a considerable post-cure increase of DC that can be followed up to 7 days. This suggests that mechanical properties and biocompatibility are not attained immediately after curing, but develop continuously over time. The study was supported by CSF programme (08/31).

post-cure ; polymerization ; light-curing ; bulk-fill composites

nije evidentirano

engleski

Long-term development of degree of conversion of bulk-fill composites during 7 days

Aim: To determine the degree of conversion (DC) of two commercial composite materials (SDR/Dentsply and Filtek Bulk Fill/3M ESPE) and to monitor the long-term postcure increase of DC up to 7 days. Materials and methods: DC was determined by Raman spectroscopy at two measuring depths: 1 mm and 4 mm. For each material and each depth, 6 samples were prepared. The cylindrical samples with a 3 mm diameter and 6 mm height were light cured with irradiance of 1090 mW/cm2 for 20 s. DC was measured immediately after curing (0 days), 1 day post-cure and 7 days post-cure. During preparation and storage, the samples were kept at room temperature. Statistical analysis was performed using a dependent samples t-test. Results: DC values (%) for Filtek Bulk Fill amounted to (0 days/1 day/7 days): 56.8/65.8/ 70.5 at 1 mm depth and 44.4/54.4/54.4 at 4 mm depth. DC values of SDR amounted to 55.8/ 68.5/74.2 at 1 mm depth and 49.7/64.5/70.7 at 4 mm depth. Statistically significant DC increase was observed for Filtek Bulk Fill after 1 day and 7 days at 1 mm depth, while at 4 mm depth no further DC increase was observed after 1 day. For SDR, a trend of DC increase was observed at both depths, being marginally significant only at 4 mm depth. Conclusion: Filtek Bulk Fill and SDR presented a considerable post-cure increase of DC that can be followed up to 7 days. This suggests that mechanical properties and biocompatibility are not attained immediately after curing, but develop continuously over time. The study was supported by CSF programme (08/31).

post-cure ; polymerization ; light-curing ; bulk-fill composites

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o prilogu

177-177.

2015.

49 (2)

objavljeno

Podaci o matičnoj publikaciji

Acta stomatologica Croatica

Marović, Danijela

0001-7019

1846-0410

Podaci o skupu

1st International congress of the School of Dental Medicine University of Zagreb

poster

01.01.2015-01.01.2015

Zagreb, Hrvatska

Povezanost rada

Dentalna medicina

Poveznice
Indeksiranost