Comparison of Internal Fit between Implant Abutments and Cast Metal Crowns vs Laser-sintered Crowns
| Autor: | Emre Mumcu, Bulent Uludag, Pelin Özkan, Mehmet Ali Kılıçarslan |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Surface Properties medicine.medical_treatment Crown (dentistry) law.invention Dental Prosthesis Retention Dental Implants Single-Tooth Optical microscope law Materials Testing medicine Humans Composite material General Dentistry Cement Dental Casting Technique Crowns Lasers Dental Implant-Abutment Design Dental Marginal Adaptation Resin Cements Selective laser sintering Dental Prosthesis Design Casting (metalworking) Dental Casting Investment Chromium Alloys Implant |
| Zdroj: | The Journal of Contemporary Dental Practice. 15:428-432 |
| ISSN: | 1526-3711 |
| DOI: | 10.5005/jp-journals-10024-1557 |
| Popis: | Aim A common problem related to cemented single crowns is the internal misfit, which may cause inadequate retention, especially when seated on the implant abutment. The aim of this study was to compare the internal fit of Co-Cr crowns using a traditional lost-wax casting technique from laser-sintered Co-Cr alloy crowns. Materials and methods Twelve metallic crowns per each technique were fabricated. The effect of the thickness of cement, originated internal gap was evaluated. Crowns were cemented on the implant abutments with resin cement, and the internal fit of crowns was measured at five areas with an optical microscope. The data were analyzed, and the means were compared with a t-test (p Results The internal gap width measurements for the lasersintered group (min. 52.19 ± 11.61 µm and max. 140.01 ± 31.84 µm) indicated the presence of a significantly closed internal gap compared to the crowns obtained through the lost wax method (min. 65.50 ± 9.54 µm and max. 313.46 ± 48.12 µm). Conclusion The fit of the metal crown likely varies with the fabrication technique. The use of techniques that enable the adjustment of crown parameters, such as the laser sintering technique, maintains the desired fit between casting and implant abutments. Clinical significance This study investigated which technique affects the internal fit of cemented implant-supported crowns, comparing the use of lost wax casting and laser-sintered metal dental alloys. The results of this study indicate that the use of laser-sintered crowns can improve for crown accuracy. How to cite this article Kiliçarslan MA, Özkan P, Uludag B, Mumcu E. Comparison of Internal Fit between Implant Abutments and Cast Metal Crowns vs Laser-sintered Crowns. J Contemp Dent Pract 2014;15(4):428-432. |
| Databáze: | OpenAIRE |
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