NCT07496047

Clinical Evaluation of Short Fiber-Reinforced Composite Restorations With and Without Preheating Approach

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 70 (actual)
• Sponsor: Tanta University · Academic / Other
• Sex: All
• Age: 25 Years – 40 Years
• Healthy volunteers: Accepted

Summary

To clinically evaluate the performance of preheated versus non-preheated short fiber-reinforced composite (SFRC) restorations in Class I posterior cavities over a 12-month period

Detailed description

Resin-based composites are widely used for posterior restorations due to their aesthetic properties and adhesive capabilities. However, polymerization shrinkage stress and insufficient fracture resistance remain major concerns in stress-bearing areas. Short fiber-reinforced composites (SFRCs) were developed to improve mechanical properties and crack-stopping ability. everX Posterior (GC Corporation, Tokyo, Japan) contains randomly oriented E-glass fibers within a resin matrix, enhancing fracture toughness and load-bearing capacity. Preheating composite materials has been proposed to reduce viscosity, improve flow, enhance cavity adaptation, and potentially increase the degree of conversion. Elevated temperature reduces internal friction among monomers, thereby improving polymerization kinetics. Despite promising laboratory findings, limited clinical evidence exists regarding the impact of preheating on SFRC performance. Therefore, this randomized clinical trial aimed to evaluate the clinical behavior of SFRC restorations placed with and without preheating in Class I cavities over 12 months

Conditions

• Composite Resins
• Teeth Sensitivity
• Restoration Design
• Composite Restoration

Interventions

Type	Name	Description
OTHER	Preheated everX Posterior composite	Application of everX Posterior composite after preheating to 54°C using a composite warmer, followed by placement, adaptation, and curing according to manufacturer guidelines.
OTHER	Non-preheated everX Posterior composite	Application of everX Posterior composite at room temperature, placed and cured according to manufacturer instructions.

Timeline

• Start date: 2025-03-01
• Primary completion: 2026-03-17
• Completion: 2026-03-20
• First posted: 2026-03-27
• Last updated: 2026-03-27

Locations

2 sites across 1 country: Egypt