The effect of different finishing & polishing protocols on the surface roughness & flexural strength of zirconia bars
Introduction: The aim of this study is to evaluate the effect of three different finishing and polishing protocols on the surface roughness and flexural strength of tetragonal zirconia. Materials and methods: 1: Surface roughness; One hundred and five bars of Y-TZP were prepared from Zenostar zircon...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-01-01
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| Series: | Saudi Dental Journal |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1013905219301944 |
| _version_ | 1811288225097973760 |
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| author | Fatima AlBishry Dana Qeblawi Joseph Rumfola Elaine Davis |
| author_facet | Fatima AlBishry Dana Qeblawi Joseph Rumfola Elaine Davis |
| author_sort | Fatima AlBishry |
| collection | DOAJ |
| description | Introduction: The aim of this study is to evaluate the effect of three different finishing and polishing protocols on the surface roughness and flexural strength of tetragonal zirconia. Materials and methods: 1: Surface roughness; One hundred and five bars of Y-TZP were prepared from Zenostar zirconia blocks (Ivoclar Vivadent). Fifteen bars were distributed into one of seven groups (n = 15/group). Three rotary systems were assessed for finishing and polishing zirconia. After surface preparation the surface roughness was measured using a non-contact profilometer (NPFlex Light interferometer, Bruker Corp., Tucson, AZ). 2: Flexural Strength; Flexural strength of the bars was determined using a three point bending test in a Universal Testing Machine (Instron). Results: 1: Surface roughness; A significant interaction was demonstrated between grinding condition and polishing kit (P = 0.001). 2: Flexural Strength; a statistically significant difference in flexural strength between groups was seen (p < 0.05). There was no significant interaction effect (P = 0.869). Conclusions: Surface adjustment with dry grinding conditions increased the surface roughness of Y-TZP using the Komet polishing kit compared to wet conditions. Dry grinding lowered the flexural strength compared to wet grinding, irrespective of the kit being used. Achieving a polished surface comparable to that of the control group can be possible by using Brasseler’s zirconia polishing kit under wet grinding conditions. |
| first_indexed | 2024-04-13T03:32:24Z |
| format | Article |
| id | doaj.art-25405f2cf88b492fb709f032bbd4bdc3 |
| institution | Directory Open Access Journal |
| issn | 1013-9052 |
| language | English |
| last_indexed | 2024-04-13T03:32:24Z |
| publishDate | 2019-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Saudi Dental Journal |
| spelling | doaj.art-25405f2cf88b492fb709f032bbd4bdc32022-12-22T03:04:25ZengElsevierSaudi Dental Journal1013-90522019-01-0131S49The effect of different finishing & polishing protocols on the surface roughness & flexural strength of zirconia barsFatima AlBishry0Dana Qeblawi1Joseph Rumfola2Elaine Davis3State University of New York at Buffalo, United States; King Saud University Medical City, Saudi ArabiaState University of New York at Buffalo, United StatesState University of New York at Buffalo, United StatesOral Diagnostic Sciences, State University of New York at Buffalo, United StatesIntroduction: The aim of this study is to evaluate the effect of three different finishing and polishing protocols on the surface roughness and flexural strength of tetragonal zirconia. Materials and methods: 1: Surface roughness; One hundred and five bars of Y-TZP were prepared from Zenostar zirconia blocks (Ivoclar Vivadent). Fifteen bars were distributed into one of seven groups (n = 15/group). Three rotary systems were assessed for finishing and polishing zirconia. After surface preparation the surface roughness was measured using a non-contact profilometer (NPFlex Light interferometer, Bruker Corp., Tucson, AZ). 2: Flexural Strength; Flexural strength of the bars was determined using a three point bending test in a Universal Testing Machine (Instron). Results: 1: Surface roughness; A significant interaction was demonstrated between grinding condition and polishing kit (P = 0.001). 2: Flexural Strength; a statistically significant difference in flexural strength between groups was seen (p < 0.05). There was no significant interaction effect (P = 0.869). Conclusions: Surface adjustment with dry grinding conditions increased the surface roughness of Y-TZP using the Komet polishing kit compared to wet conditions. Dry grinding lowered the flexural strength compared to wet grinding, irrespective of the kit being used. Achieving a polished surface comparable to that of the control group can be possible by using Brasseler’s zirconia polishing kit under wet grinding conditions.http://www.sciencedirect.com/science/article/pii/S1013905219301944 |
| spellingShingle | Fatima AlBishry Dana Qeblawi Joseph Rumfola Elaine Davis The effect of different finishing & polishing protocols on the surface roughness & flexural strength of zirconia bars Saudi Dental Journal |
| title | The effect of different finishing & polishing protocols on the surface roughness & flexural strength of zirconia bars |
| title_full | The effect of different finishing & polishing protocols on the surface roughness & flexural strength of zirconia bars |
| title_fullStr | The effect of different finishing & polishing protocols on the surface roughness & flexural strength of zirconia bars |
| title_full_unstemmed | The effect of different finishing & polishing protocols on the surface roughness & flexural strength of zirconia bars |
| title_short | The effect of different finishing & polishing protocols on the surface roughness & flexural strength of zirconia bars |
| title_sort | effect of different finishing polishing protocols on the surface roughness flexural strength of zirconia bars |
| url | http://www.sciencedirect.com/science/article/pii/S1013905219301944 |
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