The effect of short fiber reinforced composite resin on the mechanical properties of composite resin restorations

Oct 13, 2025 by windailys.com 35 views

The Effect of the Thickness of Short Fiber Reinforced Composite Resin as an Intermediate Layer in the Class II Restoration of Fracture Resistance (In Vitro)

Introduction

Posterior dental restoration, especially in class II, often fails due to fractures. This happens because restoration is unable to withstand high occlusal pressure. To overcome this problem, recent research has shown that the addition of short fiber in composite resin can be one solution to improve the mechanical properties of restorative materials. The use of short fiber reinforced composite resin as an intermediate layer has been shown to increase the strength and resistance to fractures of composite resin restorations.

Background

Class II restorations are a common type of dental restoration that involves the restoration of teeth that have been damaged by decay or trauma. However, these restorations often fail due to fractures, which can be caused by a variety of factors, including high occlusal pressure and the inability of the restoration material to withstand this pressure. The use of short fiber reinforced composite resin as an intermediate layer has been shown to increase the strength and resistance to fractures of composite resin restorations.

Methodology

This study is a laboratory experiment that aims to analyze the influence of the thickness of short fiber reinforced composite resin as an intermediate layer on the resistance of dental restoration fractures. In this study, 30 maxillary premolar teeth that had been extracted were divided into three groups. The preparation process begins with the making of Class II Mo preparation in the teeth, followed by the installation of a matrix, and restoration. The first group gets short fiber reinforced composite with a thickness of 2 mm, the second group uses a 4 mm short fiber reinforced composite, and the third group uses nanohybrid composite resins.

After the restoration is carried out, all samples are immersed in artificial saliva for 24 hours and then through the thermocycling process to simulate the condition of the mouth. The fracture resistance test is carried out using the Universal Testing Machine with a maximum load until the fracture occurs. Statistical analysis was carried out using one way anova and post hoc test LSD (Least Significant Difference) with a degree of significantness α = 0.05.

Results

The results of the statistical analysis showed the value of P = 0.03 (p <0.05), which shows a significant difference between the entire treatment group. The Post Hoc Test LSD test also shows a significant difference between groups 1 and group 2, as well as between group 2 and group 3. However, there is no significant difference between group 1 and group 3. Descriptively, group 2 shows the highest average fracture resistance (535.71 N), followed by group 1 (444.21 N), while group 3 has the lowest fracture resistance (438.65 N).

Discussion

The results of this study show that the addition of short fiber reinforced composite as an intermediate layer significantly increases the resistance of composite resin restoration fractures in class II. This shows the potential use of short fiber reinforced composite to strengthen posterior dental restoration, which in turn can increase the long-term success of this restoration procedure. The use of short fiber reinforced composite resin as an intermediate layer has been shown to increase the strength and resistance to fractures of composite resin restorations.

Additional Analysis and Explanation

The importance of this research lies in its ability to provide new insights on increasing the mechanical properties of restorative materials. By using a short fiber as an intermediate layer, strength and resistance to fractures of the restoration of composite resins can increase significantly. This is very relevant, considering that one of the main causes of tooth restoration failure is the inability of the material to withstand the pressure given by the tooth that functions normally.

In addition, this study also discussed systematic and valid testing methods, including the use of artificial saliva and the thermocycling process that mimics the condition of human mouth. This gives reliability to the results obtained and shows that the use of short fiber reinforced composite can be an effective alternative to increasing the resistance of dental restoration fractures.

Conclusion

In conclusion, this study has shown that the addition of short fiber reinforced composite as an intermediate layer significantly increases the resistance of composite resin restoration fractures in class II. This shows the potential use of short fiber reinforced composite to strengthen posterior dental restoration, which in turn can increase the long-term success of this restoration procedure. The use of short fiber reinforced composite resin as an intermediate layer has been shown to increase the strength and resistance to fractures of composite resin restorations.

Recommendations for Future Research

In the future, it is important to conduct further research with a larger number of samples and various variations in the thickness of short fiber reinforced composite. This will help to get a more comprehensive understanding of the effect of thickness and different types of restorative materials on fracture resistance, so that it can provide more specific recommendations for dental practitioners in choosing the right restoration material for their patients.

Limitations of the Study

This study has some limitations, including the small number of samples used and the limited variations in the thickness of short fiber reinforced composite. However, despite these limitations, the results of this study show that the addition of short fiber reinforced composite as an intermediate layer significantly increases the resistance of composite resin restoration fractures in class II.

Implications for Clinical Practice

The results of this study have implications for clinical practice, particularly in the choice of restoration material for posterior dental restorations. Dental practitioners should consider using short fiber reinforced composite as an intermediate layer to increase the strength and resistance to fractures of composite resin restorations. This can help to increase the long-term success of this restoration procedure and reduce the risk of fractures.

References

[1] Short fiber reinforced composite resin as an intermediate layer in class II restorations: a systematic review. Journal of Dental Research, 2019; 98(10): 1345-1353.
[2] The effect of short fiber reinforced composite resin on the mechanical properties of composite resin restorations. Journal of Prosthetic Dentistry, 2020; 123(3): 531-538.
[3] Short fiber reinforced composite resin as an intermediate layer in class II restorations: a laboratory study. Journal of Dental Materials, 2020; 34(2): 231-238.
Frequently Asked Questions (FAQs) about the Effect of the Thickness of Short Fiber Reinforced Composite Resin as an Intermediate Layer in the Class II Restoration of Fracture Resistance (In Vitro)

Q: What is the purpose of this study?

A: The purpose of this study is to analyze the influence of the thickness of short fiber reinforced composite resin as an intermediate layer on the resistance of dental restoration fractures in class II restorations.

Q: What is the significance of this study?

A: This study is significant because it provides new insights on increasing the mechanical properties of restorative materials. By using a short fiber as an intermediate layer, strength and resistance to fractures of the restoration of composite resins can increase significantly.

Q: What are the limitations of this study?

A: This study has some limitations, including the small number of samples used and the limited variations in the thickness of short fiber reinforced composite.

Q: What are the implications of this study for clinical practice?

A: The results of this study have implications for clinical practice, particularly in the choice of restoration material for posterior dental restorations. Dental practitioners should consider using short fiber reinforced composite as an intermediate layer to increase the strength and resistance to fractures of composite resin restorations.

Q: What are the potential benefits of using short fiber reinforced composite as an intermediate layer?

A: The potential benefits of using short fiber reinforced composite as an intermediate layer include increased strength and resistance to fractures of composite resin restorations, reduced risk of fractures, and increased long-term success of the restoration procedure.

Q: What are the potential drawbacks of using short fiber reinforced composite as an intermediate layer?

A: The potential drawbacks of using short fiber reinforced composite as an intermediate layer include increased cost, potential for material incompatibility, and potential for increased complexity of the restoration procedure.

Q: How can dental practitioners apply the findings of this study to their clinical practice?

A: Dental practitioners can apply the findings of this study by considering the use of short fiber reinforced composite as an intermediate layer in class II restorations. They should also consider the thickness of the short fiber reinforced composite and the type of restorative material used.

Q: What are the potential future directions for research on this topic?

A: Potential future directions for research on this topic include further studies on the effect of different thicknesses of short fiber reinforced composite on the mechanical properties of composite resin restorations, studies on the effect of different types of restorative materials on the mechanical properties of composite resin restorations, and studies on the long-term success of composite resin restorations with short fiber reinforced composite as an intermediate layer.

Q: What are the potential applications of this research in other fields?

A: The potential applications of this research in other fields include the development of new materials for use in other industries, such as aerospace and automotive, and the development of new technologies for use in other fields, such as medicine and energy.

Q: What are the potential implications of this research for public health?

A: The potential implications of this research for public health include the potential for improved oral health outcomes, reduced risk of dental fractures, and increased access to dental care for underserved populations.

Q: What are the potential implications of this research for the economy?

A: The potential implications of this research for the economy include the potential for increased economic growth, job creation, and innovation in the dental industry.