| Autor: |
Gajić Nataša, Kojić Željka, Đeri Aleksandra, Arbutina Radmila, Trnić Zorica |
| Jazyk: |
English<br />Serbian |
| Rok vydání: |
2008 |
| Předmět: |
|
| Zdroj: |
Stomatološki glasnik Srbije, Vol 55, Iss 4, Pp 229-237 (2008) |
| Druh dokumentu: |
article |
| ISSN: |
0039-1743 |
| DOI: |
10.2298/SGS0804229G |
| Popis: |
Introduction: During composite polymerisation, material contraction occurs and leads to microgap formation. Various light sources are used in everyday dental practice for the polymerisation of composite restorations: conventional halogen, xenon, LED light curing units (LCUs) and argon lasers. Aim: The aim of this study was to analyze the effect of an LED LCU with reduced irradiance on the marginal seal of different composite restorations. Material and Method: The study was conducted on 40 extracted human teeth (intact and carious). Class V cavities were prepared on all teeth. Cavities were filled with either Filtek Supreme -3M (20 teeth) or Luksogal - Galenika (20 teeth) and polymerisation was done using an LED source with reduced irradiance (90 mW/cm2). Microleakage was tested using the dye penetration method with silver nitrate. Dye penetration was assessed using a stereo loupe with a microscale and x6 magnification. Results: The obtained results suggested that greater dye penetration occurred in samples restored with Luksogal. There was a statistically significant difference between occlusal (27.00) and gingival (36.90) margins (p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
