Comparison of Fracture Resistance among Different Post Placement Strategies and Core Buildup Materials in Endodontically Treated Maxillary Premolars: An In Vitro Study.

Alshali, Shatha A.; Abulhamael, Ayman; Mously, Hisham; Shikdar, Narmeen

Purpose: To compare the fracture resistance of endodontically treated premolars reinforced by one or two fiber-reinforced composites and different core buildup materials. Materials and methods: A total of 40 double-rooted maxillary premolars were collected and divided into four groups (n = 10/group). After endodontic treatment, the teeth were prepared and received fiber posts as follows: group I--single fiber post with LuxaCore Z as luting cement and core buildup material, group II--two fiber posts with LuxaCore Z as luting cement and core buildup material, group III--single fiber post cemented with RelyX Unicem followed by packable composite as a core buildup material, group IV--two fiber posts cemented with RelyX Unicem followed by packable composite as a core buildup material. The specimens were placed in the universal testing machine for testing of the fracture resistance. Specimens were axially loaded on the center of the occlusal surface. One-way analysis of variance (ANOVA) was done to assess group differences, followed by Tukey's honestly significant difference (HSD) post hoc test for multiple comparisons. Results: Group IV (two fiber posts with resin cement and packable composite resin) had a significantly higher mean fracture resistance (1049.16 ± 125.51 N) compared to group I (874.47 ± 59.94 N), group II (872.16 ± 151.18 N), and group III (979.21 ± 117.45 N). The difference among the groups was statistically significant (p = 0.013). The Tukey's HSD post hoc test results for paired groups revealed that the fracture resistance of group IV was significantly higher than group I (p = 0.030) and group II (p = 0.027). Conclusion: The restoration of endodontically treated double-rooted premolars using two fiber posts luted with resin cement, followed by packable composite buildup, showed promising performance regarding fracture resistance.

DIAGNOSIS of bone fractures; BICUSPIDS

International Journal of Prosthodontics & Restorative Dentistry, 2024, Vol 14, Issue 2, p99

2231-6361

Academic Journal

10.5005/jp-journals-10019-1457