Evaluation of the Clinical Performance of a Bulk Fill Resin Composite in Cuspal Coverage Restorations of Vital Posterior Teeth (RCT)

May 21, 2026 updated by: Ahmed Mohamed Mohamed Azazy, Future University in Egypt
This clinical study aims to compare bulk-fill and conventional composite resins in cuspal coverage restorations of posterior teeth. The primary outcomes include evaluating wear resistance, fracture incidence, and recurrent caries at different follow-up periods. Bulk-fill composites are designed for easier placement in thicker increments, potentially improving clinical efficiency. The study seeks to determine whether bulk-fill materials can provide comparable or superior performance to conventional composites in restoring structurally compromised teeth.

Study Overview

Status

Active, not recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

50

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Egypt
    • Cairo Governorate
      • New Cairo, Cairo Governorate, Egypt, 11835
        • Future University in Egypt

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Adult patients of 20 to 50 of age
  • Molars teeth
  • Medically free
  • Vital teeth
  • Males or females
  • one or cusps affected
  • Patient consent
  • Good oral hygiene (plaque index 0 or 1)
  • Absence of parafunctional habits.
  • No abscess

Exclusion Criteria:

  • Xerostomia and bruxism.
  • Endodontically treated teeth
  • Systematic disease
  • Extremely poor oral hygiene sever or chronic periodontitis.
  • Pregnant and lactating women.
  • No subgingival margin
  • Allergic to used materials
  • Patient are not present during recalls .

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Bulk-Fill Composite Group
Participants in this group will receive cuspal coverage restorations using a bulk-fill composite resin. The material will be placed in a single increment following adhesive application according to the manufacturer's instructions.
Device: Beautifil Bulk Fill (Shofu Inc.)
This intervention involves performing cuspal coverage restorations in posterior teeth using Shofu Beautifil Bulk Fill composite resin. The composite will be applied in a single increment following the manufacturer's adhesive and placement protocol. Each restoration will be evaluated clinically for wear resistance, fracture incidence, and recurrent caries during the follow-up period.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Occlusal Wear
Time Frame: T0: Baseline examination (1 week after restoration) T1: 6 months T2: 9 months T3: 12 months

0 = No visible wear

  1. = Slight wear, no effect on function
  2. = Moderate wear, slight anatomical loss
  3. = Severe wear needing intervention
T0: Baseline examination (1 week after restoration) T1: 6 months T2: 9 months T3: 12 months
Fracture Resistance
Time Frame: T0: Baseline examination (1 week after restoration) T1: 6 months T2: 9 months T3: 12 months
  1. = Restoration fully intact
  2. = Partially fractured but retained
  3. = Completely fractured or lost
T0: Baseline examination (1 week after restoration) T1: 6 months T2: 9 months T3: 12 months
Caries Recurrence
Time Frame: T0: Baseline examination (1 week after restoration) T1: 6 months T2: 9 months T3: 12 months

0 = No recurrent caries at restoration margin

1 = Recurrent caries present and continuous with margin
T0: Baseline examination (1 week after restoration) T1: 6 months T2: 9 months T3: 12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Future University in Egypt

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

December 1, 2025

Primary Completion (Estimated)

December 1, 2026

Study Completion (Estimated)

December 31, 2026

Study Registration Dates

First Submitted

May 21, 2026

First Submitted That Met QC Criteria

May 21, 2026

First Posted (Actual)

May 28, 2026

Study Record Updates

Last Update Posted (Actual)

May 28, 2026

Last Update Submitted That Met QC Criteria

May 21, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • CUSPALCOVERAGE

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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