The purpose with this in-vitro study is to examine the difference in marginal and internal gap width between bis-acryl composite resins (Luxatemp Fluorescence) and IPS Empress crowns. A maxillary left first phantom Frasaco molar tooth placed in a maxillary Frasaco model was prepared for an all-ceramic crown. 15 provisional Luxatemp crowns were made and silicon replicas of the intermediate space between the prepared tooth and the inside of the Luxatemp crowns were made to measure the internal and marginal gap width. The silicon replicas were divided into four pieces and the gap width was measured at 240 points under microscope. The results were compared to data on internal and marginal gap width for an IPS Empress crown from a published study. The results of this present study showed a slight difference in marginal and internal gap width between the Luxatemp crowns and the IPS Empress crowns (control). The Luxatemp crowns have a slightly minor overall gap width than the IPS Empress crowns. The marginal and occlusal gap width was slightly wider for the Luxatemp crowns (205µm) than for the IPS Empress crowns (170µm). The conclusion of this study is that provisional materials made of bis-acryl composite resins give a marginal and internal fit that can be compared to the marginal and internal fit of an IPS Empress crown.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:umu-155200 |
| Date | January 2018 |
| Creators | Habib, Aboud, Shamoel, Sargon |
| Publisher | Umeå universitet, Institutionen för odontologi, Umeå universitet, Institutionen för odontologi |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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