A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä

Influence of short-fiber composite base on fracture behavior of direct and indirect restorations




TekijätGaroushi S, Sungur S, Boz Y, Ozkan P, Vallittu P K, Uctasli S, Lassila L

KustantajaSPRINGER HEIDELBERG

Julkaisuvuosi2021

JournalClinical Oral Investigations

Vuosikerta25

Aloitussivu4543

Lopetussivu4552

Sivujen määrä10

ISSN1432-6981

eISSN1436-3771

DOIhttps://doi.org/10.1007/s00784-020-03768-6

Verkko-osoitehttps://link.springer.com/article/10.1007/s00784-020-03768-6

Rinnakkaistallenteen osoitehttps://research.utu.fi/converis/portal/detail/Publication/50991770


Tiivistelmä

Objectives: The aim was to examine the influence of short-fiber composite (SFC) core on the fracture-behavior of different types of indirect posterior restorations. In addition, the effect of thickness ratio of SFC-core to the thickness of the veneering conventional composite (PFC) on fracture-behavior of bi-structured composite restorations was evaluated.

Materials and methods: MOD cavities with removed palatal cusps were prepared on 90 intact molars. Five groups of direct overlay restorations (n = 10/group) were fabricated having a SFC-core (everX Flow) with various thicknesses (0, 1, 2, 3, 4 mm) and layer of surface PFC (G-aenial Anterior), remaining the thickness of the bi-structure restoration to be 5 mm. Four groups of CAD/CAM-made restorations (Cerasmart 270 and e-max CAD) were fabricated either with 2-mm layer of SFC-core or without fiber reinforcement. Intact teeth (n = 10) were used as control group. Restorations were statically loaded until fracture. Fracture patterns were evaluated visually. Data were analyzed using ANOVA (p = 0.05).

Results: With indirect overlay restorations, no statistically significant differences (p > 0.05) were observed in the load-bearing capacities between restorations reinforced by 2-mm SFC-core (bi-structured) and those fabricated from plain restorative materials. ANOVA displayed that direct overlay restorations made from 4-mm layer thickness of SFC-core had significantly higher load-bearing capacities (3050 ± 574 N) (p < 0.05) among all the groups tested.

Conclusions: Restorations (direct/indirect) combining SFC-core and a surface layer of conventional material demonstrated encouraging achievement in reference to fracture behavior.

Clinical relevance: The use of flowable short-fiber composite as reinforcing base with large direct and indirect restorations may result in more repairable failure.


Ladattava julkaisu

This is an electronic reprint of the original article.
This reprint may differ from the original in pagination and typographic detail. Please cite the original version.





Last updated on 2024-26-11 at 20:21