An In-Vitro Investigation into the Fracture Resistance of Prefabricated and Custom-Made Zirconia Crowns for Permanent Molars in Children
<b>Background:</b> Recently, the demand for esthetic restorations has grown dramatically and extended into the pediatric population. The prefabricated zirconia crowns (PZCs) and custom-made zirconia crowns (CZCs) are new esthetic options in pediatric dentistry. However, they are still in...
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| Format: | Article |
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MDPI AG
2025-01-01
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| Series: | Dentistry Journal |
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| Online Access: | https://www.mdpi.com/2304-6767/13/2/64 |
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| author | Thikrayat Bani-Hani Rami S. Al-Fodeh Ahed M. Al-Wahadni Elham S. Abu-Alhaija Mahmoud Al-Hakam |
| author_facet | Thikrayat Bani-Hani Rami S. Al-Fodeh Ahed M. Al-Wahadni Elham S. Abu-Alhaija Mahmoud Al-Hakam |
| author_sort | Thikrayat Bani-Hani |
| collection | DOAJ |
| description | <b>Background:</b> Recently, the demand for esthetic restorations has grown dramatically and extended into the pediatric population. The prefabricated zirconia crowns (PZCs) and custom-made zirconia crowns (CZCs) are new esthetic options in pediatric dentistry. However, they are still inadequately tested for use in children. Aim: To determine the fracture resistance and failure mode of the PZC in comparison to the CZC. <b>Materials and Methods:</b> In this in-vitro study, thirty cobalt-chromium dies were fabricated by scanning the negative replica of a prefabricated lower first permanent molar zirconia crown. CZCs were designed and milled using two different zirconia brands: Ceramill Zolid-FX (FX) and the Highly-Translucent (HT) zirconia. Dies were randomly assigned to receive either a PZC or a CZC (n = 10 in each group). All crowns were cemented on their respective dies using glass ionomer cement. Following artificial aging, all specimens were loaded to failure. Fracture mode analysis was performed. One-way ANOVA and Bonferroni post-hoc test were used for multiple comparisons across the groups. The significant level was set at <i>p</i> ≤ 0.05. <b>Results:</b> HT zirconia had a significantly higher fracture load compared to other groups (<i>p</i> < 0.05). The mean fracture resistance values were: (3087 ± 385) N for HT zirconia, (2633 ± 300) N for PZCs, and (2483 ± 381) N for FX, with no statistically significant difference in fracture strengths between PZCs and FX. <b>Conclusions:</b> HT zirconia crowns showed the highest fracture resistance amongst all groups. The fracture loads of tested crowns exceeded the maximum posterior biteforce. When placed in permanent molars, PZC are expected to perform well under masticatory forces in children. |
| first_indexed | 2025-03-14T15:10:20Z |
| format | Article |
| id | doaj.art-062d1fbbfea2487a8df6cdb999253599 |
| institution | Directory Open Access Journal |
| issn | 2304-6767 |
| language | English |
| last_indexed | 2025-03-14T15:10:20Z |
| publishDate | 2025-01-01 |
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| series | Dentistry Journal |
| spelling | doaj.art-062d1fbbfea2487a8df6cdb9992535992025-02-25T13:23:15ZengMDPI AGDentistry Journal2304-67672025-01-011326410.3390/dj13020064An In-Vitro Investigation into the Fracture Resistance of Prefabricated and Custom-Made Zirconia Crowns for Permanent Molars in ChildrenThikrayat Bani-Hani0Rami S. Al-Fodeh1Ahed M. Al-Wahadni2Elham S. Abu-Alhaija3Mahmoud Al-Hakam4Division of Paediatric Dentistry, Preventive Dentistry Department, Faculty of Dentistry, Jordan University of Science and Technology, Irbid 22110, JordanDepartment of Prosthodontics, Faculty of Dentistry, Jordan University of Science and Technology, Irbid 22110, JordanDepartment of Prosthodontics, Faculty of Dentistry, Jordan University of Science and Technology, Irbid 22110, JordanCollege of Dental Medicine, QU Health, Qatar University, Doha P.O. Box 2713, QatarProsthodontics, Faculty of Dentistry, Jordan University of Science and Technology, Irbid 22110, Jordan<b>Background:</b> Recently, the demand for esthetic restorations has grown dramatically and extended into the pediatric population. The prefabricated zirconia crowns (PZCs) and custom-made zirconia crowns (CZCs) are new esthetic options in pediatric dentistry. However, they are still inadequately tested for use in children. Aim: To determine the fracture resistance and failure mode of the PZC in comparison to the CZC. <b>Materials and Methods:</b> In this in-vitro study, thirty cobalt-chromium dies were fabricated by scanning the negative replica of a prefabricated lower first permanent molar zirconia crown. CZCs were designed and milled using two different zirconia brands: Ceramill Zolid-FX (FX) and the Highly-Translucent (HT) zirconia. Dies were randomly assigned to receive either a PZC or a CZC (n = 10 in each group). All crowns were cemented on their respective dies using glass ionomer cement. Following artificial aging, all specimens were loaded to failure. Fracture mode analysis was performed. One-way ANOVA and Bonferroni post-hoc test were used for multiple comparisons across the groups. The significant level was set at <i>p</i> ≤ 0.05. <b>Results:</b> HT zirconia had a significantly higher fracture load compared to other groups (<i>p</i> < 0.05). The mean fracture resistance values were: (3087 ± 385) N for HT zirconia, (2633 ± 300) N for PZCs, and (2483 ± 381) N for FX, with no statistically significant difference in fracture strengths between PZCs and FX. <b>Conclusions:</b> HT zirconia crowns showed the highest fracture resistance amongst all groups. The fracture loads of tested crowns exceeded the maximum posterior biteforce. When placed in permanent molars, PZC are expected to perform well under masticatory forces in children.https://www.mdpi.com/2304-6767/13/2/64fracture resistancezirconia crownschildren |
| spellingShingle | Thikrayat Bani-Hani Rami S. Al-Fodeh Ahed M. Al-Wahadni Elham S. Abu-Alhaija Mahmoud Al-Hakam An In-Vitro Investigation into the Fracture Resistance of Prefabricated and Custom-Made Zirconia Crowns for Permanent Molars in Children Dentistry Journal fracture resistance zirconia crowns children |
| title | An In-Vitro Investigation into the Fracture Resistance of Prefabricated and Custom-Made Zirconia Crowns for Permanent Molars in Children |
| title_full | An In-Vitro Investigation into the Fracture Resistance of Prefabricated and Custom-Made Zirconia Crowns for Permanent Molars in Children |
| title_fullStr | An In-Vitro Investigation into the Fracture Resistance of Prefabricated and Custom-Made Zirconia Crowns for Permanent Molars in Children |
| title_full_unstemmed | An In-Vitro Investigation into the Fracture Resistance of Prefabricated and Custom-Made Zirconia Crowns for Permanent Molars in Children |
| title_short | An In-Vitro Investigation into the Fracture Resistance of Prefabricated and Custom-Made Zirconia Crowns for Permanent Molars in Children |
| title_sort | in vitro investigation into the fracture resistance of prefabricated and custom made zirconia crowns for permanent molars in children |
| topic | fracture resistance zirconia crowns children |
| url | https://www.mdpi.com/2304-6767/13/2/64 |
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