| Autor: |
Mitra, Aditya, Sharma, Snigdha, Bhattacharyya, Anirban, Maity, Asim Bikash, Majumder, Gayatri, Datta, Soham |
| Předmět: |
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| Zdroj: |
Journal of Conservative Dentistry & Endodontics; Dec2024, Vol. 27 Issue 12, p1285-1288, 4p |
| Abstrakt: |
Background: The stress distribution of a restored tooth is different from that of an intact sound tooth. The fracture resistance of a restored tooth depends on cavity design, remaining tooth structure, and material used. Aim: This in vitro study evaluated and compared the fracture resistance of mandibular molars restored using composite resin. Materials and Methods: Forty freshly extracted, intact mandibular molars were used, with their roots embedded in acrylic resin for stability. Cavities were prepared using a No. 2 round bur and straight fissure diamond, then divided into four groups with specific variations in cavity dimensions. Samples were tested using a universal testing machine, applying vertical load along the long axis at the central fossa to record fracture load. Statistical Analysis: One-way analysis of variance and Tukey's post hoc analysis were used for statistical analysis. Results: Fracture resistance of the groups, listed in descending order, was: Lingual wall 1.5 mm (2417 ± 160 N) > Buccal wall 1.5 mm (2122 ± 75.9 N) > Lingual wall 1 mm (1966 ± 75.7 N) > Buccal wall 1 mm (1335 ± 216 N). Conclusion: The lingual wall 1.5 mm exhibited the highest fracture resistance, while the buccal wall with 1 mm thickness showed the least resistance. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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