Comparison of marginal accuracy in two different materials used in provisional crown & bridge – an in vitro experimental study
Objective: To determine the difference in the marginal accuracy at buccal, lingual, mesial and distal margins of temporary crowns fabricated with bisacryl-based temporary crown material. Method: The in-vitro, experimental, laboratory-based study was conducted at the Aga Khan University, Karachi,...
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| Format: | Article |
| Language: | English |
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Pakistan Medical Association
2023-02-01
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| Series: | Journal of the Pakistan Medical Association |
| Online Access: | https://www.ojs.jpma.org.pk/index.php/public_html/article/view/5008 |
| _version_ | 1797820903826915328 |
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| author | Faizan Javed Aysha Arif Farhan Raza Khan |
| author_facet | Faizan Javed Aysha Arif Farhan Raza Khan |
| author_sort | Faizan Javed |
| collection | DOAJ |
| description |
Objective: To determine the difference in the marginal accuracy at buccal, lingual, mesial and distal margins of temporary crowns fabricated with bisacryl-based temporary crown material.
Method: The in-vitro, experimental, laboratory-based study was conducted at the Aga Khan University, Karachi, from September to December 2019, and comprised two bisacryl-based temporary crown material, Integrity and Protemp 4, which were used to fabricate a sample of 24 temporary crowns. A pre-operative polyvinyl siloxane impression served as a template for temporary crown fabrication. A right mandibular molar tooth on a typodont was prepared to receive a crown. The provisional crown material was syringed onto the template and was allowed to cure. All four surfaces of the crown were observed under a stereomicroscope equipped with digital single-lens reflex camera at 25.6x magnification. An image of each surface was captured and a photographic record was maintained. An image processing software was used for the measurement of marginal discrepancy. Marginal accuracy among the four surfaces was assessed. Data was analysed using SPSS 23.
Results: Mean marginal discrepancy for provisional crowns fabricated with Protemp 4 and Integrity was 410±222um and 319±176um, respectively. The marginal discrepancy between the two groups was statistically significant (p=0.027), with buccal margin exhibiting the most discrepancy (p<0.01).
Conclusions: Integrity showed less microleakage than Protemp 4. Among all the walls, the buccal wall showed the most microleakage. Marginal accuracy was found to be dependent upon the type of provisional crown material and the side of the prepared axial wall.
Key Words: Crowns, Dental marginal adaptation, Tooth preparation, Dental materials.
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| first_indexed | 2024-03-13T09:45:08Z |
| format | Article |
| id | doaj.art-0347a7f16b51487d8405d59a4f3c01a1 |
| institution | Directory Open Access Journal |
| issn | 0030-9982 |
| language | English |
| last_indexed | 2024-03-13T09:45:08Z |
| publishDate | 2023-02-01 |
| publisher | Pakistan Medical Association |
| record_format | Article |
| series | Journal of the Pakistan Medical Association |
| spelling | doaj.art-0347a7f16b51487d8405d59a4f3c01a12023-05-25T04:20:46ZengPakistan Medical AssociationJournal of the Pakistan Medical Association0030-99822023-02-0173310.47391/JPMA.5008Comparison of marginal accuracy in two different materials used in provisional crown & bridge – an in vitro experimental studyFaizan Javed0Aysha Arif1Farhan Raza Khan2Department of Operative Dentistry, The Aga Khan University, Karachi, PakistanDepartment of Operative Dentistry, The Aga Khan University, Karachi, PakistanDepartment of Operative Dentistry, The Aga Khan University, Karachi, Pakistan Objective: To determine the difference in the marginal accuracy at buccal, lingual, mesial and distal margins of temporary crowns fabricated with bisacryl-based temporary crown material. Method: The in-vitro, experimental, laboratory-based study was conducted at the Aga Khan University, Karachi, from September to December 2019, and comprised two bisacryl-based temporary crown material, Integrity and Protemp 4, which were used to fabricate a sample of 24 temporary crowns. A pre-operative polyvinyl siloxane impression served as a template for temporary crown fabrication. A right mandibular molar tooth on a typodont was prepared to receive a crown. The provisional crown material was syringed onto the template and was allowed to cure. All four surfaces of the crown were observed under a stereomicroscope equipped with digital single-lens reflex camera at 25.6x magnification. An image of each surface was captured and a photographic record was maintained. An image processing software was used for the measurement of marginal discrepancy. Marginal accuracy among the four surfaces was assessed. Data was analysed using SPSS 23. Results: Mean marginal discrepancy for provisional crowns fabricated with Protemp 4 and Integrity was 410±222um and 319±176um, respectively. The marginal discrepancy between the two groups was statistically significant (p=0.027), with buccal margin exhibiting the most discrepancy (p<0.01). Conclusions: Integrity showed less microleakage than Protemp 4. Among all the walls, the buccal wall showed the most microleakage. Marginal accuracy was found to be dependent upon the type of provisional crown material and the side of the prepared axial wall. Key Words: Crowns, Dental marginal adaptation, Tooth preparation, Dental materials. https://www.ojs.jpma.org.pk/index.php/public_html/article/view/5008 |
| spellingShingle | Faizan Javed Aysha Arif Farhan Raza Khan Comparison of marginal accuracy in two different materials used in provisional crown & bridge – an in vitro experimental study Journal of the Pakistan Medical Association |
| title | Comparison of marginal accuracy in two different materials used in provisional crown & bridge – an in vitro experimental study |
| title_full | Comparison of marginal accuracy in two different materials used in provisional crown & bridge – an in vitro experimental study |
| title_fullStr | Comparison of marginal accuracy in two different materials used in provisional crown & bridge – an in vitro experimental study |
| title_full_unstemmed | Comparison of marginal accuracy in two different materials used in provisional crown & bridge – an in vitro experimental study |
| title_short | Comparison of marginal accuracy in two different materials used in provisional crown & bridge – an in vitro experimental study |
| title_sort | comparison of marginal accuracy in two different materials used in provisional crown bridge an in vitro experimental study |
| url | https://www.ojs.jpma.org.pk/index.php/public_html/article/view/5008 |
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