Effect of three different preparation designs on the marginal adaptation of indirect overlay restoration fabricated from lithium disilicate ceramic material: An in-vitro comparative study
Objectives: Marginal adaptation is considered one of the key factors influencing the success of indirect restorations. This study aimed to estimate the marginal fit of lithium disilicate overlays with three distinct preparation designs before and after cementation. Methods: Thirty maxillary first pr...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Saudi Dental Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1013905223000640 |
| _version_ | 1797823747085828096 |
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| author | Sajad Athab Hasan Zainab Mohammed-Hussain Abdul-Ameer |
| author_facet | Sajad Athab Hasan Zainab Mohammed-Hussain Abdul-Ameer |
| author_sort | Sajad Athab Hasan |
| collection | DOAJ |
| description | Objectives: Marginal adaptation is considered one of the key factors influencing the success of indirect restorations. This study aimed to estimate the marginal fit of lithium disilicate overlays with three distinct preparation designs before and after cementation. Methods: Thirty maxillary first premolars were divided into the hollow chamfer design (HCD11 HCD: Hollow Chamfer Design.) group, butt-joint design (BJD22 BJD: Butt-Joint Design.) group, and conventional occlusal box design (COD33 COD: Conventional Occlusal Design.) group (n = 10 each). The samples were scanned using an intra-oral scanner, and overlays were fabricated using computer-assisted design and milled on a computer-assisted machine. The finished restorations were luted using a self-adhesive resin RelyX Ultimate. The marginal gap was assessed using a digital microscope with 230X magnification power. Statistical analysis was conducted using analysis of variance and post hoc (Bonferroni correction) tests, assuming a significance level of 5%. Results: The HCD and BJD groups recorded significantly lower marginal gap, (11.39 ± 0.72, 16.29 ± 0.75) and (11.59 ± 0.75, 16.93 ± 0.65) respectively, than the COD group (24.57 ± 1.18, 34.45 ± 1.09) both pre- and post-cementation. Conclusion: This study demonstrated that modification of tooth preparation plays a significant role in the marginal adaptation of the lithium disilicate overlays. The gap was smaller with the HCD and BJD than with the COD, with a statistically significant difference. |
| first_indexed | 2024-03-13T10:28:32Z |
| format | Article |
| id | doaj.art-1092cebf5fc44df886236d6bd960dbae |
| institution | Directory Open Access Journal |
| issn | 1013-9052 |
| language | English |
| last_indexed | 2024-03-13T10:28:32Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Saudi Dental Journal |
| spelling | doaj.art-1092cebf5fc44df886236d6bd960dbae2023-05-19T04:45:00ZengElsevierSaudi Dental Journal1013-90522023-05-01354372377Effect of three different preparation designs on the marginal adaptation of indirect overlay restoration fabricated from lithium disilicate ceramic material: An in-vitro comparative studySajad Athab Hasan0Zainab Mohammed-Hussain Abdul-Ameer1Corresponding author at: Aesthetic and Restorative Dentistry Department, College of Dentistry, University of Baghdad, Altibbi Collection, Bab Al Muadham, Zip Code 10049-10047, Al Rusafa, Baghdad, Iraq.; Aesthetic and Restorative Dentistry Department, College of Dentistry, University of Baghdad, Baghdad, IraqAesthetic and Restorative Dentistry Department, College of Dentistry, University of Baghdad, Baghdad, IraqObjectives: Marginal adaptation is considered one of the key factors influencing the success of indirect restorations. This study aimed to estimate the marginal fit of lithium disilicate overlays with three distinct preparation designs before and after cementation. Methods: Thirty maxillary first premolars were divided into the hollow chamfer design (HCD11 HCD: Hollow Chamfer Design.) group, butt-joint design (BJD22 BJD: Butt-Joint Design.) group, and conventional occlusal box design (COD33 COD: Conventional Occlusal Design.) group (n = 10 each). The samples were scanned using an intra-oral scanner, and overlays were fabricated using computer-assisted design and milled on a computer-assisted machine. The finished restorations were luted using a self-adhesive resin RelyX Ultimate. The marginal gap was assessed using a digital microscope with 230X magnification power. Statistical analysis was conducted using analysis of variance and post hoc (Bonferroni correction) tests, assuming a significance level of 5%. Results: The HCD and BJD groups recorded significantly lower marginal gap, (11.39 ± 0.72, 16.29 ± 0.75) and (11.59 ± 0.75, 16.93 ± 0.65) respectively, than the COD group (24.57 ± 1.18, 34.45 ± 1.09) both pre- and post-cementation. Conclusion: This study demonstrated that modification of tooth preparation plays a significant role in the marginal adaptation of the lithium disilicate overlays. The gap was smaller with the HCD and BJD than with the COD, with a statistically significant difference.http://www.sciencedirect.com/science/article/pii/S1013905223000640Butt jointHollow chamferMarginal adaptationOcclusal box designOverlay |
| spellingShingle | Sajad Athab Hasan Zainab Mohammed-Hussain Abdul-Ameer Effect of three different preparation designs on the marginal adaptation of indirect overlay restoration fabricated from lithium disilicate ceramic material: An in-vitro comparative study Saudi Dental Journal Butt joint Hollow chamfer Marginal adaptation Occlusal box design Overlay |
| title | Effect of three different preparation designs on the marginal adaptation of indirect overlay restoration fabricated from lithium disilicate ceramic material: An in-vitro comparative study |
| title_full | Effect of three different preparation designs on the marginal adaptation of indirect overlay restoration fabricated from lithium disilicate ceramic material: An in-vitro comparative study |
| title_fullStr | Effect of three different preparation designs on the marginal adaptation of indirect overlay restoration fabricated from lithium disilicate ceramic material: An in-vitro comparative study |
| title_full_unstemmed | Effect of three different preparation designs on the marginal adaptation of indirect overlay restoration fabricated from lithium disilicate ceramic material: An in-vitro comparative study |
| title_short | Effect of three different preparation designs on the marginal adaptation of indirect overlay restoration fabricated from lithium disilicate ceramic material: An in-vitro comparative study |
| title_sort | effect of three different preparation designs on the marginal adaptation of indirect overlay restoration fabricated from lithium disilicate ceramic material an in vitro comparative study |
| topic | Butt joint Hollow chamfer Marginal adaptation Occlusal box design Overlay |
| url | http://www.sciencedirect.com/science/article/pii/S1013905223000640 |
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