Evaluation of the influence of various restoration techniques on fracture resistance of endodontically treated teeth with different cavity wall thicknesses


Basaran E. T. , Gokce Y.

NIGERIAN JOURNAL OF CLINICAL PRACTICE, cilt.22, sa.3, ss.328-334, 2019 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 22 Konu: 3
  • Basım Tarihi: 2019
  • Doi Numarası: 10.4103/njcp.njcp_346_18
  • Dergi Adı: NIGERIAN JOURNAL OF CLINICAL PRACTICE
  • Sayfa Sayıları: ss.328-334

Özet

Aims: The aim of this study was to compare the effect of different restoration techniques on fracture resistance of endodontically treated teeth with different wall thicknesses. Materials and Methods: Extracted and endodontically treated 210 premolars were randomly divided into three thickness groups [2 mm (A), 1.5 mm (B), and 1 mm (C)] and, each group was further divided into seven restoration subgroups (n = 10): direct composite (control) (K), composite with fiber on cavity floor (KT), composite with fiber on occlusal level (KO), fiber post and composite (FP), inlay (L), fiber on cavity floor and inlay (LT), and inlay and fiber on occlusal level (LO). Fracture test was performed, and data were compared with KruskaluWallis and MannuWhitney U tests (P < 0.05). Results: There were no differences between the subgroups in A and C statistically (P 0.05). However, in B, KO subgroup showed statistically higher values (P = 0.039). Conclusion: Wall support of 2 mm was adequate, and support of 1 mm was completely insufficient. When the wall thickness was 1.5 mm, direct restoration with fiber at the occlusal level significantly improved resistance.