| Autor: |
Shafi, Mowaffq Abdulhamed, Rayyan, Mohammad Ramadan |
| Předmět: |
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| Zdroj: |
Clinical Oral Investigations; Jan2023, Vol. 27 Issue 1, p339-344, 6p, 3 Color Photographs, 2 Charts |
| Abstrakt: |
Objectives: This study aimed to compare the failure load of heat-pressed versus milled lithium disilicate endocrowns. Materials and methods: Twenty extracted mandibular molars were sectioned 1.5 mm above the CEJ. Root canal treatment and endocrown preparation were done for all teeth. Samples were then divided into two groups: heat-pressed glass ceramic endocrowns (HP group) (n = 10) and milled endocrowns (CAD group) (n = 10). Cementation was done using self-adhesive resin cement, and a compressive load was applied on the occlusal surface of the specimens until failure occurred. Results: The mean failure loads were significantly higher in the HP group (2546.5 ± 339 N) compared to the CAD group (1759.9 ± 114.2) (p < 0.05), and majority of failures were due to fracture of the restoration. Conclusions: Failure loads of heat-pressed lithium disilicate endocrown are superior to milled endocrown. Clinical relevance: Molars restored with lithium disilicate endocrowns have higher failure loads than the maximum human bite force regardless of the fabrication method. Although heat-pressed endocrowns have superior failure loads to milled ones, both are indicated for restoring endodontically treated molar teeth. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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