In-Vitro Comparison Of Micro-Leakage Between Nanocomposite And Microhybrid Composite In Class V Cavities Treated With The Self-Etch Technique.
J Ayub Med Coll Abbottabad
; 28(3): 445-448, 2016.
Article
em En
| MEDLINE
| ID: mdl-28712210
ABSTRACT
BACKGROUND:
When a light cure composite resin is used to restore a class V lesion, certain stresses are generated at the tooth-restoration interface. If these stresses exceed the bond strength of the restorative material, microscopic gaps are formed which eventually cause micro-leakage at the tooth-restoration interface. The objective of the present study was to compare the micro-leakage values at the tooth-restoration interface using dye penetration method between a Nano filled and a Micro hybrid light cured composite resin in class V cavities using the self-etch technique.METHODS:
Sixty class V cavities were made coronal to the cemento-enamel junction in the extracted premolars. These were then randomly divided into two study groups. Group A Self-etch; filled with P-60 (microhybrid) n=30. Group B Self-etch; filled with Z-350 (nano-filled) n=30. Specimens were subjected to thermo-cycling at 5-55 °C±2 °C with a 30 seconds dwell time. After which they were stained with 2% methylene blue. Later, sectioned bucco-lingually and examined using a stereo microscope (magnification X4) at the occlusal, axial and gingival surfaces. Micro-leakage around the toothrestoration interface was assessed by using the degree of dye penetration in millimetres.RESULTS:
There was 100% micro leakage seen at both the occlusal and gingival surfaces when using the P-60 composite. With the Z-350 composite 84% occlusal and 88% of the gingival surfaces exhibited microleakage..CONCLUSIONS:
With respect to micro-leakage in class V cavities, Z-350 was found to be a superior restorative material compared to P-60 on the occlusal surface. Overall, there is no statistically significant difference in the micro-leakage exhibited by the two restorative materials in class V preparations subjected to self-etch protocol.Palavras-chave
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Condicionamento Ácido do Dente
/
Resinas Compostas
/
Infiltração Dentária
/
Nanocompostos
Limite:
Humans
Idioma:
En
Revista:
J Ayub Med Coll Abbottabad
Assunto da revista:
MEDICINA
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Paquistão
País de publicação:
PAKISTAN
/
PAQUISTÃO
/
PK