Comparative analysis of endocrown fracture resistance and marginal adaptation: CAD/CAM technology using lithium disilicate vs. zirconia-reinforced lithium silicate ceramics
Aims: The present study aimed to compare the fracture resistance and marginal adaptation of endocrowns fabricated using lithium disilicate (LDS) and zirconia-reinforced lithium silicate 9ZLS) ceramics by the computer-aided design and computer-aided manufacturing (CAD/CAM) technology. Materials and M...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | Saudi Dental Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1013905223002444 |
| _version_ | 1797302566504103936 |
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| author | Ezatollah Jalalian Arash Zarbakhsh Sotude Khorshidi Shaghayegh Golalipour Sara Mohammadnasl Maryam Sayyari |
| author_facet | Ezatollah Jalalian Arash Zarbakhsh Sotude Khorshidi Shaghayegh Golalipour Sara Mohammadnasl Maryam Sayyari |
| author_sort | Ezatollah Jalalian |
| collection | DOAJ |
| description | Aims: The present study aimed to compare the fracture resistance and marginal adaptation of endocrowns fabricated using lithium disilicate (LDS) and zirconia-reinforced lithium silicate 9ZLS) ceramics by the computer-aided design and computer-aided manufacturing (CAD/CAM) technology. Materials and Methods: In this in vitro experimental study, 24 extracted mandibular first molars received standard endocrown preparation and were randomly assigned to two groups (n = 12) for the fabrication of endocrowns with ZLS (Suprinity) and LDS (IPS e.max CAD) ceramics. After scanning the teeth with a CAD scanner, endocrowns were designed by inLab Software version 15 (inLab SW 15) and prepared by an imes-icore 350i milling machine. The vertical marginal gap of endocrowns was measured under a stereomicroscope at three steps before and after cementation and after thermomechanical cycles. The fracture resistance of specimens was then measured by load application at a 45° angle. Mode of failure was also determined as reparable or irreparable. Data were analyzed using Pearson’s correlation test and t-test. Results: The mean fracture resistance of ZLS endocrowns was significantly higher than that of LDS endocrowns (P = 0.000). The reparability of ZLS endocrowns was zero, while that of LDS endocrowns was 83.33 %. The vertical marginal gap was significantly smaller in ZLS than in LDS endocrowns at all three time points (P < 0.05). Also, the marginal gap increased by cementation and thermomechanical cycles in both groups. Conclusion: ZLS and LDS endocrowns both showed acceptable vertical marginal adaptation. ZLS had superior marginal adaptation and higher fracture resistance. |
| first_indexed | 2024-03-07T23:39:42Z |
| format | Article |
| id | doaj.art-c286cb2f05ad42e89efbedabb0a2e14e |
| institution | Directory Open Access Journal |
| issn | 1013-9052 |
| language | English |
| last_indexed | 2024-03-07T23:39:42Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Saudi Dental Journal |
| spelling | doaj.art-c286cb2f05ad42e89efbedabb0a2e14e2024-02-20T04:18:38ZengElsevierSaudi Dental Journal1013-90522024-02-01362353358Comparative analysis of endocrown fracture resistance and marginal adaptation: CAD/CAM technology using lithium disilicate vs. zirconia-reinforced lithium silicate ceramicsEzatollah Jalalian0Arash Zarbakhsh1Sotude Khorshidi2Shaghayegh Golalipour3Sara Mohammadnasl4Maryam Sayyari5Prosthodontic Dept, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, IranDepartment of Fixed Prosthodontics, Dental Branch, Azad University, Tehran, IranDepartment of Prosthodontics, Dental Branch, Islamic Azad University, Tehran, Iran; Corresponding author.Department of Prosthodontics, Dental Branch, Islamic Azad University, Tehran, IranGraduated from Dental Branch oF Iran Azad University of Tehran, Tehran, IranFaculty of Dentistry, Tehran University of Medical Sciences, Tehran, IranAims: The present study aimed to compare the fracture resistance and marginal adaptation of endocrowns fabricated using lithium disilicate (LDS) and zirconia-reinforced lithium silicate 9ZLS) ceramics by the computer-aided design and computer-aided manufacturing (CAD/CAM) technology. Materials and Methods: In this in vitro experimental study, 24 extracted mandibular first molars received standard endocrown preparation and were randomly assigned to two groups (n = 12) for the fabrication of endocrowns with ZLS (Suprinity) and LDS (IPS e.max CAD) ceramics. After scanning the teeth with a CAD scanner, endocrowns were designed by inLab Software version 15 (inLab SW 15) and prepared by an imes-icore 350i milling machine. The vertical marginal gap of endocrowns was measured under a stereomicroscope at three steps before and after cementation and after thermomechanical cycles. The fracture resistance of specimens was then measured by load application at a 45° angle. Mode of failure was also determined as reparable or irreparable. Data were analyzed using Pearson’s correlation test and t-test. Results: The mean fracture resistance of ZLS endocrowns was significantly higher than that of LDS endocrowns (P = 0.000). The reparability of ZLS endocrowns was zero, while that of LDS endocrowns was 83.33 %. The vertical marginal gap was significantly smaller in ZLS than in LDS endocrowns at all three time points (P < 0.05). Also, the marginal gap increased by cementation and thermomechanical cycles in both groups. Conclusion: ZLS and LDS endocrowns both showed acceptable vertical marginal adaptation. ZLS had superior marginal adaptation and higher fracture resistance.http://www.sciencedirect.com/science/article/pii/S1013905223002444EndocrownsFracture resistanceLithium disilicateMarginal adaptationZirconia-reinforced lithium silicate |
| spellingShingle | Ezatollah Jalalian Arash Zarbakhsh Sotude Khorshidi Shaghayegh Golalipour Sara Mohammadnasl Maryam Sayyari Comparative analysis of endocrown fracture resistance and marginal adaptation: CAD/CAM technology using lithium disilicate vs. zirconia-reinforced lithium silicate ceramics Saudi Dental Journal Endocrowns Fracture resistance Lithium disilicate Marginal adaptation Zirconia-reinforced lithium silicate |
| title | Comparative analysis of endocrown fracture resistance and marginal adaptation: CAD/CAM technology using lithium disilicate vs. zirconia-reinforced lithium silicate ceramics |
| title_full | Comparative analysis of endocrown fracture resistance and marginal adaptation: CAD/CAM technology using lithium disilicate vs. zirconia-reinforced lithium silicate ceramics |
| title_fullStr | Comparative analysis of endocrown fracture resistance and marginal adaptation: CAD/CAM technology using lithium disilicate vs. zirconia-reinforced lithium silicate ceramics |
| title_full_unstemmed | Comparative analysis of endocrown fracture resistance and marginal adaptation: CAD/CAM technology using lithium disilicate vs. zirconia-reinforced lithium silicate ceramics |
| title_short | Comparative analysis of endocrown fracture resistance and marginal adaptation: CAD/CAM technology using lithium disilicate vs. zirconia-reinforced lithium silicate ceramics |
| title_sort | comparative analysis of endocrown fracture resistance and marginal adaptation cad cam technology using lithium disilicate vs zirconia reinforced lithium silicate ceramics |
| topic | Endocrowns Fracture resistance Lithium disilicate Marginal adaptation Zirconia-reinforced lithium silicate |
| url | http://www.sciencedirect.com/science/article/pii/S1013905223002444 |
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