Depth of cure of composite resins with different photoinitiators cured with two LED lamps
BACKGROUND: It has been stablished that LED lamps are not suitable to cure resins that present photoinitiators other than camphorquinone because of the differences between the specral emission of the lamp and the absorption spectrum of the initiator. OBJECTIVE: Determine the depth of cure of resins...
| Autor Principal: | Fadul Ortiz, José Rafael; Pontificia Universidad Javeriana |
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| Otros Autores: | Molina Sánchez, César Augusto; Pontificia Universidad Javeriana, Yáñez Meza, Edwin Armando; Pontificia Universidad Javeriana, Luna Ángel, Luis Eduardo; Pontificia Universidad Javeriana |
| Formato: | info:eu-repo/semantics/article |
| Idioma: | spa |
| Publicado: |
Editorial Pontificia Universidad Javeriana
2009
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| Acceso en línea: |
http://revistas.javeriana.edu.co/index.php/revUnivOdontologica/article/view/536 |
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| Sumario: |
BACKGROUND: It has been stablished that LED lamps are not suitable to cure resins that present photoinitiators other than camphorquinone because of the differences between the specral emission of the lamp and the absorption spectrum of the initiator. OBJECTIVE: Determine the depth of cure of resins with different photoinitiators using LED lamps. METHODS: An experimental in vitro study was carried out. 120 samples of composite resin of 2x8mm and 4x8mm were fabricated and divided into 12 groups of 10 samples each. The composites were Point 4 XL1 (KERR) with phenylpropanedione and Z100 A3 (3M ESPE) with camphorquinone. The curing units used were Elipar Freelight 2 (3M ESPE), Bluephase (IVOCLAR) and Elipar 2500 (3M ESPE). The depth of cure was determined with a Vickers indenter. Statistical analysis was carried out using a three-way ANOVA and the Kruskall-Wallis H test. RESULTS: There were no significant differences in the depth of cure obtained with the three curing units (p>0.05). The mean depth of cure in samples of 2x8mm with phenylpropanedione was 0.3986 y 0.4027 respectively for the upper and lower parts of the samples, and 0.3917 y 0.3999 for samples of 4x8mm. For samples of 2x8mm with camphorquinone the mean values were 0.2801 and 0.2815 for the upper and lower parts respectively and 0.3261 y 0.3264 for samples of 4x8mm. CONCLUSIONS: No significant differences were found in the depth of cure obtained with the three curing units. |
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