Аутори:
1. Ognjenka Janković, Медицински факултет Бања Лука , Republic of Srpska, Bosnia and Herzegovina
2. Renata Josipović, Медицински факултет Бања Лука , Republic of Srpska, Bosnia and Herzegovina
3. Radmila Arbutina, Медицински факултет Бања Лука , Republic of Srpska, Bosnia and Herzegovina
4. Игор Ђукић, Медицински факултет Бања Лука , Republic of Srpska, Bosnia and Herzegovina
5. Мирјана Умићевић Давидовић, Медицински факултет Бања Лука , Republic of Srpska, Bosnia and Herzegovina
6. Маријана Араповић Савић, Медицински факултет Бања Лука , Republic of Srpska, Bosnia and Herzegovina
7. Verica Pavlić, PHI Institute of Dentistry, Banja Luka, Republic of Srpska, Bosnia and Herzegovina
8. A. Arbutina, Медицински факултет Бања Лука , Republic of Srpska, Bosnia and Herzegovina

Апстракт:
Introduction: Composite materials to contract during the polymerization process which lessens their clinical value. Modifications in the composition of the composite material and application technique proved to be insufficient to compensate for the polymerization shrinkage, and tried a modification of polymerization modes. Objective: The objective of this work was to be check the influence of different polymerization techniques to polymerization shrinkage of class V cavities. Materials and Methods: The 30 premolars with two Class-V-cavities were used in the present study. Vestibular cavities were restored with Vertise Flow, and oral cavities with Filtek Flow. For polymerization is used Led lamp which supports three programs of light curing: High Power, Low Power and Soft smart polymerization. The samples were then immersed in AgNO3, then immersed in a 10% solution of photo developer. Dye penetration, occlusal and gingival, assessed using a binocular magnifier with a micrometer scale. Results: The results showed that the total dye penetration in all teeth cured by conventional curing technique (4.46 µm) was slightly higher compared to the dye penetration restorations polymerized soft start curing technique (4.27 µm) and slightly lower compared to dye penetration restorations polymerized pulse curing technique (5.54 µm). Statistical analysis revealed no significant difference in dye penetration depending on the polymerization techniques (p = 0.057), although the values of dye penetration soft start techniques are somewhat lower than for pulsed and classical techniques. Conclusion: Slightly better results in the application of soft start polymerization techniques explained that it is a two-phase technique, which in the initial stage polymerization cycle hire irradiance smaller values, for which the polymerization full intensity.

Кључне речи:
polymerization shrinkage, polymerization technology, composite materials

Тематска област:
СИМПОЗИЈУМ Б - Биоматеријали и наномедицина

Датум пријаве сажетка:
26.04.2016.

Конференцијa:
Contemporary Materials 2016 - Савремени Материјали

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