The surface roughness difference between microhybrid and polycrystalline composites after polishing

• Main Authors: Eric Priyo Prasetyo, Karlina Samadi, Cecilia Gerda Juliani Lunardhi
• Format: Article
• Language: English
• Published: Universitas Airlangga 2008-12-01
• Series: Dental Journal: Majalah Kedokteran Gigi
• Subjects: surface roughness; microhybrid composite; polycrystalline composite
• Online Access: http://e-journal.unair.ac.id/index.php/MKG/article/view/984

<span style="font-family: TribuneBold; font-size: 10pt; color: #231f20; font-style: normal; font-variant: normal;"><strong>Background</strong><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>: One of the success criteria for a composite resin restorative material is the surface roughness that can be achieved </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>through polishing. Considering that there are so many types of composite resin materials on the market, including polycrystalline </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>composites, information on this type of composite’s surface roughness is needed. </em><span style="font-family: TribuneBold; font-size: 10pt; color: #231f20; font-style: normal; font-variant: normal;"><strong>Purpose</strong><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>: The aim of this laboratory experiment was </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>to compare the surface roughness difference between microhybrid and polycrystalline composite after polishing. </em><span style="font-family: TribuneBold; font-size: 10pt; color: #231f20; font-style: normal; font-variant: normal;"><strong>Methods: </strong><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>In order to </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>obtain this, a laboratory experiment was done. Four groups of composites were produced, the first two groups consist of microhybrid </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>composite and the second two groups consist of polycrystalline composite. Two groups with the same material were treated with two </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>different treatments as follows: the first group was not finished (the surface is under celluloid matrix), the second group was finished </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>and polished. After these treatments, each sample’s surface was measured using surface roughness measuring instrument and then </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>the </em><span style="font-family: TribuneBold; font-size: 10pt; color: #231f20; font-style: normal; font-variant: normal;"><strong>Results: </strong><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>were analyzed statistically using independent t-test (</em><span style="font-family: SymbolProportionalBT-Regular; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;">α <span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>= 0.05). </em><span style="font-family: TribuneBold; font-size: 10pt; color: #231f20; font-style: normal; font-variant: normal;"><strong>Conclusion: </strong><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>The result showed that after polishing, the </em><span style="font-family: TribuneItalic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>surface roughness of polycrystalline composite is lower than that of microhybrid composite.</em></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>