Vertical marginal discrepancies of metal castings obtained using different pattern materials: A scanning electron microscope study
Background and Objectives: Dental Casting involves various stages of processing, out of which any may affect the dimensional accuracy. The fit of a casting depends not only on the method of fabrication employed but also on the type of materials utilized. One important variable in the casting process...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2014-01-01
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| Series: | Journal of International Clinical Dental Research Organization |
| Subjects: | |
| Online Access: | http://www.jicdro.org/article.asp?issn=2231-0754;year=2014;volume=6;issue=2;spage=98;epage=102;aulast=Sushma |
| _version_ | 1818083408504422400 |
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| author | R Sushma Anand Farias Romesh Soni |
| author_facet | R Sushma Anand Farias Romesh Soni |
| author_sort | R Sushma |
| collection | DOAJ |
| description | Background and Objectives: Dental Casting involves various stages of processing, out of which any may affect the dimensional accuracy. The fit of a casting depends not only on the method of fabrication employed but also on the type of materials utilized. One important variable in the casting process is the type of pattern material employed. This study was carried out to determine and compare the effect of different pattern materials on the vertical marginal accuracy of complete cast crowns. Materials and Methods: A standardized metal master die simulating a prepared crown was used to prepare 60 models on which patterns were fabricated using Inlay Pattern Wax; Auto-polymerized Pattern Resin and Light Cured Modeling Resin and cast immediately. Castings of the patterns were subjected to analysis of marginal fit using a scanning electron microscope (SEM). Results: One-way ANOVA result showed a significant difference in the gap observed between the castings fabricated using the three types of pattern materials (P < 0.001). Post-hoc Bonferroni tests showed significant difference between the castings fabricated using Inlay Type B pattern wax and Auto-polymerized pattern resin as well as between Inlay Type B pattern wax and Light-cured modeling resin (P < 0.01). Significant difference exists between Auto-polymerized pattern resin and Light-cured modeling resin (P > 0.05). Conclusion: With strict adherence to the principles of pattern fabrication and immediate casting, Inlay wax can still be the pattern material of choice to produce a casting with minimal marginal discrepancy with added advantages of being user friendly and cost effective. |
| first_indexed | 2024-12-10T19:37:31Z |
| format | Article |
| id | doaj.art-b6a7688c1c1141e29781a4fe1c4ed85f |
| institution | Directory Open Access Journal |
| issn | 2231-0754 |
| language | English |
| last_indexed | 2024-12-10T19:37:31Z |
| publishDate | 2014-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Journal of International Clinical Dental Research Organization |
| spelling | doaj.art-b6a7688c1c1141e29781a4fe1c4ed85f2022-12-22T01:36:06ZengWolters Kluwer Medknow PublicationsJournal of International Clinical Dental Research Organization2231-07542014-01-01629810210.4103/2231-0754.143492Vertical marginal discrepancies of metal castings obtained using different pattern materials: A scanning electron microscope studyR SushmaAnand FariasRomesh SoniBackground and Objectives: Dental Casting involves various stages of processing, out of which any may affect the dimensional accuracy. The fit of a casting depends not only on the method of fabrication employed but also on the type of materials utilized. One important variable in the casting process is the type of pattern material employed. This study was carried out to determine and compare the effect of different pattern materials on the vertical marginal accuracy of complete cast crowns. Materials and Methods: A standardized metal master die simulating a prepared crown was used to prepare 60 models on which patterns were fabricated using Inlay Pattern Wax; Auto-polymerized Pattern Resin and Light Cured Modeling Resin and cast immediately. Castings of the patterns were subjected to analysis of marginal fit using a scanning electron microscope (SEM). Results: One-way ANOVA result showed a significant difference in the gap observed between the castings fabricated using the three types of pattern materials (P < 0.001). Post-hoc Bonferroni tests showed significant difference between the castings fabricated using Inlay Type B pattern wax and Auto-polymerized pattern resin as well as between Inlay Type B pattern wax and Light-cured modeling resin (P < 0.01). Significant difference exists between Auto-polymerized pattern resin and Light-cured modeling resin (P > 0.05). Conclusion: With strict adherence to the principles of pattern fabrication and immediate casting, Inlay wax can still be the pattern material of choice to produce a casting with minimal marginal discrepancy with added advantages of being user friendly and cost effective.http://www.jicdro.org/article.asp?issn=2231-0754;year=2014;volume=6;issue=2;spage=98;epage=102;aulast=SushmaDental castingdental pattern resininlay casting waxlight cured modeling materialvertical marginal accuracy |
| spellingShingle | R Sushma Anand Farias Romesh Soni Vertical marginal discrepancies of metal castings obtained using different pattern materials: A scanning electron microscope study Journal of International Clinical Dental Research Organization Dental casting dental pattern resin inlay casting wax light cured modeling material vertical marginal accuracy |
| title | Vertical marginal discrepancies of metal castings obtained using different pattern materials: A scanning electron microscope study |
| title_full | Vertical marginal discrepancies of metal castings obtained using different pattern materials: A scanning electron microscope study |
| title_fullStr | Vertical marginal discrepancies of metal castings obtained using different pattern materials: A scanning electron microscope study |
| title_full_unstemmed | Vertical marginal discrepancies of metal castings obtained using different pattern materials: A scanning electron microscope study |
| title_short | Vertical marginal discrepancies of metal castings obtained using different pattern materials: A scanning electron microscope study |
| title_sort | vertical marginal discrepancies of metal castings obtained using different pattern materials a scanning electron microscope study |
| topic | Dental casting dental pattern resin inlay casting wax light cured modeling material vertical marginal accuracy |
| url | http://www.jicdro.org/article.asp?issn=2231-0754;year=2014;volume=6;issue=2;spage=98;epage=102;aulast=Sushma |
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