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Comparative Evaluation of Flexural Strength of Nano-zirconia-integrated Pressable Feldspathic and Lithium Disilicate Ceramics.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sasikala, C. Chander, Naveen Gopi |
| Copyright Year | 2018 |
| Abstract | AIM The purpose of the study was to evaluate and compare the flexural strength of nano-reinforced zirconia feldspathic porcelain, lithium disilicate ceramics, and zirconia. MATERIALS AND METHODS Ten bar-shaped specimens of computer-aided design (CAD)/computer-aided manufacturing (CAM) zirconia, reinforced feldspathic porcelain, and reinforced lithium disilicate were fabricated in accordance to International Organization for Standardization (ISO 6872; n = 10). Feldspathic porcelain and lithium disilicate ceramic specimens were reinforced with 5, 10, 15, and 20% of zirconia nanoparticles through a customized technique. The specimens were subjected to three-point flexural strength test using universal testing machine (UTM) and examined for crack propagation using a scanning electron microscope (SEM). Oneway analysis of variance (ANOVA) and Tukey test were used to analyze the data (p < 0.05). RESULTS The flexural strength of feldsphatic porcelain increased with the increase in the concentration of zirconia particles. The mean flexural strength of 5, 10, 15, and 20% nano-zirconia-incorporated lithium disilicate was 93.8, 97.1, 100.6, and 100.8 MPa respectively, and was lower than the control group (221.7 MPa). A significant difference in the flexural strength was found with the incorporation of nano-zirconia particles. CONCLUSION The flexural strength of zirconia-integrated feld-spathic porcelain increased and lithium disilicate ceramics decreased with the nano-zirconia reinforcement. CLINICAL SIGNIFICANCE The simplified approach of reinforcing feldspathic porcelain with zirconia nanoparticles can be adapted in clinical situations of higher masticatory forces. |
| Starting Page | 339 |
| Ending Page | 344 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.5005/jp-journals-10024-2263 |
| PubMed reference number | 29603709 |
| Journal | Medline |
| Volume Number | 19 |
| Issue Number | 3 |
| Alternate Webpage(s) | https://www.thejcdp.com/doi/pdf/10.5005/jp-journals-10024-2263 |
| Alternate Webpage(s) | http://www.jaypeejournals.com/eJournals/ShowText.aspx?ID=13409&IID=1044&IN=~/eJournals/images/JPLOGO.gif&TYP=TOP&Type=FREE&isPDF=YES |
| Alternate Webpage(s) | https://doi.org/10.5005/jp-journals-10024-2263 |
| Journal | The journal of contemporary dental practice |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
