Comparative evaluation of adaptation and fracture resistance of CAD-CAM fabricated zirconia posts in endodontically treated teeth
Abstract Post plays a crucial role in reinforcing final restoration in endodontically treated teeth (ETT). The appropriate selection of the post system is crucial for enhancing the clinical success of the restored tooth. This study aims to evaluate the adaptation, fracture resistance, and fracture p...
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Nature Portfolio
2025-08-01
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| author | Noor Fatiha Abdul Rahim Rabihah Alawi Azirrawani Ariffin Normastura Abd Rahman Nor Aidaniza Abdul Muttlib |
| author_facet | Noor Fatiha Abdul Rahim Rabihah Alawi Azirrawani Ariffin Normastura Abd Rahman Nor Aidaniza Abdul Muttlib |
| author_sort | Noor Fatiha Abdul Rahim |
| collection | DOAJ |
| description | Abstract Post plays a crucial role in reinforcing final restoration in endodontically treated teeth (ETT). The appropriate selection of the post system is crucial for enhancing the clinical success of the restored tooth. This study aims to evaluate the adaptation, fracture resistance, and fracture patterns of ETT restored with different post systems, specifically zirconia posts, cast metal posts (CMP), and anatomically customised fibre-reinforced composite (FRC) posts. Twenty-four human premolars were randomly allocated into four groups. The teeth were root canal treated and prepared to receive zirconia, CMP, and anatomically customised FRC posts. All the samples were subjected to adaptation evaluation, fracture resistance test, and fracture pattern analysis. One-way ANOVA showed a statistically significant difference in mean adaptation between the groups (p < 0.001). Post-hoc Bonferroni analysis suggested that the adaptation values were statistically significant among zirconia and CMP (p < 0.001), and in zirconia and FRC (p = 0.007). Regarding fracture resistance, one-way ANOVA presented a statistically significant difference among the groups (p = 0.001). Post-hoc Bonferroni analysis reported a significant difference in fracture resistance in zirconia and control (p = 0.001), CMP and FRC (p < 0.001), and FRC and control. The categorical analysis of fracture patterns revealed no statistically significant differences among the zirconia, CMP, and FRC post systems. Zirconia posts show lower adaptation than CMP and FRC posts. However, their fracture resistance is comparable to CMPs and FRCs. Fracture patterns were generally consistent across the different post systems; however, the control group exhibited a significantly different pattern, highlighting the influence of post presence on fracture behaviour. |
| format | Article |
| id | doaj-art-87e20cd62c5548c99f04a74d51a19cae |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj-art-87e20cd62c5548c99f04a74d51a19cae2025-08-20T03:45:52ZengNature PortfolioScientific Reports2045-23222025-08-0115111410.1038/s41598-025-15348-3Comparative evaluation of adaptation and fracture resistance of CAD-CAM fabricated zirconia posts in endodontically treated teethNoor Fatiha Abdul Rahim0Rabihah Alawi1Azirrawani Ariffin2Normastura Abd Rahman3Nor Aidaniza Abdul Muttlib4Department of Prosthodontics, Kulliyyah of Dentistry, International Islamic University MalaysiaConservative unit, School of Dental Sciences, Universiti Sains MalaysiaProsthodontics Unit, School of Dental Sciences, Universiti Sains MalaysiaDental Public Health Unit, School of Dental Sciences, Universiti Sains MalaysiaProsthodontics Unit, School of Dental Sciences, Universiti Sains MalaysiaAbstract Post plays a crucial role in reinforcing final restoration in endodontically treated teeth (ETT). The appropriate selection of the post system is crucial for enhancing the clinical success of the restored tooth. This study aims to evaluate the adaptation, fracture resistance, and fracture patterns of ETT restored with different post systems, specifically zirconia posts, cast metal posts (CMP), and anatomically customised fibre-reinforced composite (FRC) posts. Twenty-four human premolars were randomly allocated into four groups. The teeth were root canal treated and prepared to receive zirconia, CMP, and anatomically customised FRC posts. All the samples were subjected to adaptation evaluation, fracture resistance test, and fracture pattern analysis. One-way ANOVA showed a statistically significant difference in mean adaptation between the groups (p < 0.001). Post-hoc Bonferroni analysis suggested that the adaptation values were statistically significant among zirconia and CMP (p < 0.001), and in zirconia and FRC (p = 0.007). Regarding fracture resistance, one-way ANOVA presented a statistically significant difference among the groups (p = 0.001). Post-hoc Bonferroni analysis reported a significant difference in fracture resistance in zirconia and control (p = 0.001), CMP and FRC (p < 0.001), and FRC and control. The categorical analysis of fracture patterns revealed no statistically significant differences among the zirconia, CMP, and FRC post systems. Zirconia posts show lower adaptation than CMP and FRC posts. However, their fracture resistance is comparable to CMPs and FRCs. Fracture patterns were generally consistent across the different post systems; however, the control group exhibited a significantly different pattern, highlighting the influence of post presence on fracture behaviour.https://doi.org/10.1038/s41598-025-15348-3CAD-CAM postEndodontically treated teethPost and coreZirconia postMilled zirconia post |
| spellingShingle | Noor Fatiha Abdul Rahim Rabihah Alawi Azirrawani Ariffin Normastura Abd Rahman Nor Aidaniza Abdul Muttlib Comparative evaluation of adaptation and fracture resistance of CAD-CAM fabricated zirconia posts in endodontically treated teeth Scientific Reports CAD-CAM post Endodontically treated teeth Post and core Zirconia post Milled zirconia post |
| title | Comparative evaluation of adaptation and fracture resistance of CAD-CAM fabricated zirconia posts in endodontically treated teeth |
| title_full | Comparative evaluation of adaptation and fracture resistance of CAD-CAM fabricated zirconia posts in endodontically treated teeth |
| title_fullStr | Comparative evaluation of adaptation and fracture resistance of CAD-CAM fabricated zirconia posts in endodontically treated teeth |
| title_full_unstemmed | Comparative evaluation of adaptation and fracture resistance of CAD-CAM fabricated zirconia posts in endodontically treated teeth |
| title_short | Comparative evaluation of adaptation and fracture resistance of CAD-CAM fabricated zirconia posts in endodontically treated teeth |
| title_sort | comparative evaluation of adaptation and fracture resistance of cad cam fabricated zirconia posts in endodontically treated teeth |
| topic | CAD-CAM post Endodontically treated teeth Post and core Zirconia post Milled zirconia post |
| url | https://doi.org/10.1038/s41598-025-15348-3 |
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