Effect of Fiber Reinforcement Type on the Performance of Large Posterior Restorations: A Review of In Vitro Studies

Mangoush, Enas; Garoushi, Sufyan; Lassila, Lippo; Vallittu, Pekka K.; Säilynoja, Eija

doi:10.3390/polym13213682

Cited by 21 publications

(22 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The everX composite resin material is composed of short E-glass fibers randomly oriented in a resin matrix (bis-GMA and TEGDMA cross-linked monomers) to reinforce the material [ 36 , 37 ]. The short, multidirectional glass fibers in the resin composite and the locked interwoven series of polyethylene fibers on the interfacial stresses create a multitude of load paths, improving the fracture resistance [ 36 , 38 ]. When Ribbond fibers were placed beneath everX Posterior in Group VI, the fracture load was reduced compared to Group III, though the difference between the results was not statistically significant.…”

Section: Discussionmentioning

confidence: 99%

“…Ribbond fibers have a lock-stitch pattern that transfers the forces through the fibrous weave without propagating the stress into the resin [ 43 ]. In addition, fibers placed on opposing walls may act as an internal splint, acting as a buffer to absorb stress and redirecting or preventing crack formation and propagation to enhance the mechanical behavior and the fracture resistance of the material [ 38 ].…”

Section: Discussionmentioning

confidence: 99%

“…In agreement with our results, a previous study that evaluated similar materials used for core build-up in endodontically treated molars also reported no statistically significant difference in the fracture resistance of everX composite resin restorations compared to Ribbond reinforced restorations [ 44 ]. On the other hand, there was a statistically significant difference between the fracture resistance of everX Posterior composite restorations in comparison with the Ribbond restorations [ 38 ]. The manual impregnation of Ribbond fibers can be inappropriately performed, which may create voids in the matrix, and consequently, could lead to the premature failure of the restoration; this is in contrast to everX Posterior, in which fibers are incorporated during manufacturing [ 45 ].…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Fracture Load of Mesio–Occluso–Distal Composite Restorations Performed with Different Reinforcement Techniques: An In Vitro Study

Albar

Khayat

2023

Polymers

View full text Add to dashboard Cite

Background: Mesio–occluso–distal (MOD) cavity preparations are often fragile due to the amount of tooth and carious structure removed. MOD cavities can often fracture if left unsupported. Aim: The study investigated the maximum fracture load of mesi–occluso–distal cavities restored using direct composite resin restorations with various reinforcement techniques. Method: Seventy-two freshly extracted, intact human posterior teeth were disinfected, checked, and prepared according to predetermined standards for mesio–occluso–distal cavity design (MOD). The teeth were assigned randomly into six groups. The first group was the control group restored conventionally with a nanohybrid composite resin (Group I). The other five groups were restored with a nanohybrid composite resin reinforced with different techniques: the ACTIVA BioACTIVE-Restorative and -Liner as a dentin substitute and layered with a nanohybrid composite (Group II); the everX Posterior composite resin layered with a nanohybrid composite (Group III); polyethylene fibers called “Ribbond” placed on both axial walls and the floor of the cavity, and layered with a nanohybrid composite (Group IV); polyethylene fibers placed on both axial walls and the floor of the cavity, and layered with the ACTIVA BioACTIVE-Restorative and -Liner as a dentin substitute and nanohybrid composite (Group V); and polyethylene fibers placed on both axial walls and the floor of the cavity and layered with the everX posterior composite resin and nanohybrid composite (Group VI). All teeth were subjected to thermocycling to simulate the oral environment. The maximum load was measured using a universal testing machine. Results: The highest maximum load was exhibited by Group III with the everX posterior composite resin, followed by Group IV, Group VI, Group I, Group II, and Group V. A statistically significant difference was demonstrated between groups (p = 0.0023). When adjusting for multiple comparisons, there were statistical differences specific to comparisons between Group III versus I, Group III versus II, Group IV versus II, and Group V versus III. Conclusions: Within the limitations of the current study, it can be concluded that a higher maximum load resistance can be achieved (statistically significant) when reinforcing nanohybrid composite resin MOD restorations with everX Posterior.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Fracture Load of Mesio–Occluso–Distal Composite Restorations Performed with Different Reinforcement Techniques: An In Vitro Study

Albar

Khayat

2023

Polymers

View full text Add to dashboard Cite

show abstract

“…43 Furthermore, FRC can prevent crack propagation and act as a load-bearing barrier under high occlusal forces. 44 Several studies have indicated that teeth restored with SFC as a bulk core under composite restorations had higher load-bearing capacity. [45][46][47][48] Contrary to these studies, there were no significant differences in load-bearing capacity between the single-structure (without FRC) and bistructured (with FRC) groups in the current study.…”

Section: Discussionmentioning

confidence: 99%

“…43 Furthermore, FRC can prevent crack propagation and act as a load-bearing barrier under high occlusal forces. 44…”

Section: Discussionmentioning

confidence: 99%

Fracture resistance of resin endocrowns with and without fiber reinforced composite base material: A preliminary study

Büyükbayram

Güven

Ayman³

et al. 2023

Journal of Applied Biomaterials & Functional Materials

View full text Add to dashboard Cite

Objective: The aim of this study was to investigate the effects of fiber-reinforced composite base material on fracture resistance and fracture pattern of endodontically treated maxillary premolars restored with endocrowns using two different resin nanoceramic computer-aided design and computer-aided manufacturing (CAD/CAM) restorative material. Methods: Forty extracted sound maxillary premolars with an occlusal reduction of 2 mm above the cementoenamel junction (CEJ) was performed following root canal treatment. Mesial interproximal box was prepared for each tooth at the margin of the CEJ and randomly distributed into four groups ( n = 10) as follows: Group A, no resin build-up in the pulp chamber; Group B, 2 mm of fiber-reinforced composite (FRC) build-up (EverX Posterior, GC).; Group C, no resin build-up in pulp chamber; Group D, 2 mm of FRC build-up. Groups A and B were prepared with resin nanoceramic (RNC) consisting ceramic nanofillers (Lava Ultimate 3 M ESPE), while Group C and D were prepared with RNC consisting ceramic nanohybrid fillers (Cerasmart GC Corp). All samples were subjected to 1,200,000 chewing cycles (1.6 Hz, 50 N) and 5000 thermal cycles (5°C–55°C) for artificial aging on a chewing simulator with thermal cycles (CSTC). Samples that survived the CSTC test without being damaged were subjected to a load-to-fracture test. Results: The highest mean fracture strength was found in Group D (936.0 ± 354.7) and lowest in Group A (684.2 ± 466.9). Fracture strength was higher in groups where FRC was used as a base material than plain restorations. However, there were no significant differences between the Lava and Cerasmart groups with and without FRC ( p > 0.05). Most of the samples were irreparably fractured under CEJ. Conclusion: Using short FRCs as a resin base material did not significantly improve fracture resistance. Cerasmart and Lava blocks had similar fracture resistance and fracture pattern.

show abstract

Effect of fiber-reinforced direct restorative materials on the fracture resistance of endodontically treated mandibular molars restored with a conservative endodontic cavity design

Nezir,

Dinçtürk,

Sarı

et al. 2024

Clin Oral Invest

View full text Add to dashboard Cite

Objective This study aimed to evaluate the fracture strength of teeth restored using fiber-reinforced direct restorative materials after endodontic treatment with a conservative mesio-occlusal access cavity design. Materials and methods A total of 100 extracted intact mandibular first molars were selected and distributed into a positive control group where teeth left intact and the following four test groups comprised of teeth with conservative mesio-occlusal access cavities that had undergone root canal treatment (n = 20/group): access cavity without restoration (negative control), bulk-fill resin composite with horizontal glass fiber post reinforcement, fiber-reinforced composite with bulk-fill resin and bulk-fill resin composite. Following thermocycling (10,000 cycles), fracture resistance was measured using a universal testing machine. Statistical analyses (one-way analysis of variance and the Tamhane test) were performed, and statistical significance was set at p < 0.05. Results Groups with minimally invasive access cavities had lower fracture strength than intact teeth, regardless of the restoration material (p < 0.05). Fiber-reinforced composite groups demonstrated higher fracture strength than bulk-fill resin composite alone (p < 0.05). Fracture types varied among groups, with restorable fractures predominant in the fiber-reinforced composite groups. Conclusion This study suggests that using fiber-reinforced composite materials, especially in combination with bulk-fill resin composites, can effectively enhance the fracture strength of endodontically treated teeth with conservative access cavities. However, using only bulk-fill resin composite is not recommended based on the fracture strength results. Clinical significance When teeth that undergo endodontic treatment are restored using a conservative access cavity design and fiber-reinforced composite materials, especially in combination with bulk-fill resin composites, the fracture strength of the teeth can be effectively increased.

show abstract

Effect of Fiber Reinforcement Type on the Performance of Large Posterior Restorations: A Review of In Vitro Studies

Cited by 21 publications

References 37 publications

Fracture Load of Mesio–Occluso–Distal Composite Restorations Performed with Different Reinforcement Techniques: An In Vitro Study

Fracture Load of Mesio–Occluso–Distal Composite Restorations Performed with Different Reinforcement Techniques: An In Vitro Study

Fracture resistance of resin endocrowns with and without fiber reinforced composite base material: A preliminary study

Effect of fiber-reinforced direct restorative materials on the fracture resistance of endodontically treated mandibular molars restored with a conservative endodontic cavity design

Contact Info

Product

Resources

About