Wear, OcclusalNCT07689032
Evaluation of Wear Resistance of CAD/CAM Hybrid Ceramic and Nano-Hybrid Composite Overlays in Endodontically Treated Molars and Their Effect on Natural Antagonist Teeth
A study testing SHOFU Hard blocks and BRILLIANT Crios in people with Wear, Occlusal, run by Cairo University.
Trial summary
This randomized clinical trial aims to to evaluate and compare the 24-month surface wear of the restoration and the surface wear of the opposing natural tooth structure of CAD/CAM Hybrid Ceramic (SHOFU Hard blocks) versus Resin-based Composite (BRILLIANT Crios) overlays, utilizing a digital subtraction methodology… Read more about this study
- Who is it for?
- Ages 22 to 45 years
- Conditions the study is for
- Wear, Occlusal
- What is being tested?
- SHOFU Hard blocks and BRILLIANT Crios
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 24 participants
- Where
- No sites listed yet
- Study dates
- Jul 2026to Jul 2028
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 22 to 45 years
- All sexes
- No healthy volunteers
- Adult
Who may be able to join
- Age between 22 and 45 years.
- Low to moderate caries risk.
- Normal occlusion.
- Absence of signs or symptoms of temporomandibular joint (TMJ) disorders.
- Satisfactory oral hygiene.
- Medically fit to receive routine restorative dental treatment.
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- Permanent molars.
- Asymptomatic endodontically treated teeth.
- Homogeneous root canal fillings extending 1-2 mm from the radiographic apex.
- Compound cavities.
- Favorable occlusion.
- Presence of both an adjacent tooth and a sound opposing tooth in occlusion
Who cannot join
- * Presence of bruxism.
- Poor patient cooperation.
- Inability or unwillingness to attend follow-up appointments.
- Anticipated travel during the study period.
- Poor oral hygiene.
- Chronic or advanced periodontitis.
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- Known allergies to any of the materials used in the study.
- Patients who are pregnant or breastfeeding.
- Teeth with <1" mm" of residual wall thickness.
- Deep subgingival cavity margins.
- Severe periodontal problems.
- Radiographic signs of apical pathology.
About this study
Official title: Evaluation of Wear Resistance of CAD/CAM Hybrid Ceramic and Nano-Hybrid Composite Overlays in Endodontically Treated Molars and Their Effect on Natural Antagonist Teeth: A 24-Month Randomized Clinical Trial
This randomized clinical trial aims to to evaluate and compare the 24-month surface wear of the restoration and the surface wear of the opposing natural tooth structure of CAD/CAM Hybrid Ceramic (SHOFU Hard blocks) versus Resin-based Composite (BRILLIANT Crios) overlays, utilizing a digital subtraction methodology (Intraoral Scanner and Geometrical Subtraction Software) in endodontically treated molar teeth.
Read the detailed description
The rationale for this 24-month RCT is driven by the need for high-level, evidence-based data to guide clinical material selection for compromised teeth. This trial is designed to directly compare two materials specifically engineered to be stress-absorbing in the oral environment. The primary intervention, the SHOFU Restorative System (Hard blocks), is a Hybrid Ceramic engineered to combine the durability of ceramics with the elasticity of polymers. Its reduced hardness and dentin-like modulus allow for rapid machining and are associated with reduced antagonist abrasion compared to conventional ceramics. The second material, serving as the comparator, is the Coltène Restorative System (BRILLIANT Crios), which is a reinforced nano-hybrid composite characterized by an elastic modulus comparable to dentin, designed for optimal shock absorption and confirmed to be gentle on antagonist teeth.
Focusing the study on endodontically treated molars addresses a highly prevalent clinical scenario where maximizing the longevity of the restoration and the remaining tooth structure is paramount. The use of a full-cusp-coverage overlay design represents the maximum conservation approach for these compromised teeth while ensuring that the selected restorative materials do not exert harmful effects on opposing dentition.
- Conditions
- Wear, Occlusal
- Being tested
- SHOFU Hard blocks, BRILLIANT Crios
- Medical subject headings
- Tooth Attrition
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
SHOFU Hard blocksProcedure or surgery
CAD/CAM Hybrid Ceramic, Overlay restored using the SHOFU cementation system.
BRILLIANT CriosProcedure or surgery
Resin-based Composite, Overlay restored using the Coltène cementation system.
| Study group | Role | What they receive |
|---|---|---|
| SHOFU Hard blocks | Experimental | CAD/CAM Hybrid Ceramic, Overlay restored using the SHOFU cementation system. Receives: Procedure: SHOFU Hard blocks |
| BRILLIANT Crios | Active comparator | Resin-based Composite, Overlay restored using the Coltène cementation system. Receives: Procedure: BRILLIANT Crios |
What is being measured
The primary outcome is the main question the study is designed to answer.
Annual wear rate
Digital Scanner +Geometrical Subtraction Software
Measured: 24 months
Secondary outcomes (1)
Functional properties, Biological properties and Esthetic properties
FDI Criteria
Measured: 24 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Jul 2026
- Study startJul 2026 (estimated)
- Primary completionJul 2028 (estimated)
- Study completionJul 2028 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Wear, OcclusalStudies of the same condition, open and under way.
- More trials run by Cairo UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 24 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Cairo University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Sara Salem Sayed Ahmed, Cairo University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07689032
- Sponsor's protocol ID
- 261292
- Status last verified
- Jun 2026
- First submitted
- 30 Jun 2026
- Last updated
- 7 Jul 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 7 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation of Wear Resistance of CAD/CAM Hybrid Ceramic and Nano-Hybrid Composite Overlays in Endodontically Treated Molars and Their Effect on Natural Antagonist Teeth: A 24-Month Randomized Clinical Trial
- ClinicalTrials.gov ID
- NCT07689032
- Acronym / sponsor ID
- 261292
- Conditions
- Wear, Occlusal
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 24 participants (estimated)
- Lead sponsor
- Cairo UniversityUniversity, hospital or other
- Study start
- Jul 2026 (estimated)
- Primary completion
- Jul 2028 (estimated)
- Study completion
- Jul 2028 (estimated)
- First posted
- 7 Jul 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This randomized clinical trial aims to to evaluate and compare the 24-month surface wear of the restoration and the surface wear of the opposing natural tooth structure of CAD/CAM Hybrid Ceramic (SHOFU Hard blocks) versus Resin-based Composite (BRILLIANT Crios) overlays, utilizing a digital subtraction methodology (Intraoral Scanner and Geometrical Subtraction Software) in endodontically treated molar teeth.
Detailed description
The rationale for this 24-month RCT is driven by the need for high-level, evidence-based data to guide clinical material selection for compromised teeth. This trial is designed to directly compare two materials specifically engineered to be stress-absorbing in the oral environment. The primary intervention, the SHOFU Restorative System (Hard blocks), is a Hybrid Ceramic engineered to combine the durability of ceramics with the elasticity of polymers. Its reduced hardness and dentin-like modulus allow for rapid machining and are associated with reduced antagonist abrasion compared to conventional ceramics. The second material, serving as the comparator, is the Coltène Restorative System (BRILLIANT Crios), which is a reinforced nano-hybrid composite characterized by an elastic modulus comparable to dentin, designed for optimal shock absorption and confirmed to be gentle on antagonist teeth.
Focusing the study on endodontically treated molars addresses a highly prevalent clinical scenario where maximizing the longevity of the restoration and the remaining tooth structure is paramount. The use of a full-cusp-coverage overlay design represents the maximum conservation approach for these compromised teeth while ensuring that the selected restorative materials do not exert harmful effects on opposing dentition.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| SHOFU Hard blocks | Experimental | Procedure: SHOFU Hard blocksCAD/CAM Hybrid Ceramic, Overlay restored using the SHOFU cementation system. |
| BRILLIANT Crios | Active comparator | Procedure: BRILLIANT CriosResin-based Composite, Overlay restored using the Coltène cementation system. |
Who may qualify
- Ages
- 22 to 45 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult
Key inclusion criteria (12 listed)
- Age between 22 and 45 years.
- Low to moderate caries risk.
- Normal occlusion.
- Absence of signs or symptoms of temporomandibular joint (TMJ) disorders.
- Satisfactory oral hygiene.
Key exclusion criteria (12 listed)
- * Presence of bruxism.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| SHOFU Hard blocksCAD/CAM Hybrid Ceramic, Overlay restored using the SHOFU cementation system. | Procedure or surgery | SHOFU Hard blocks |
| BRILLIANT CriosResin-based Composite, Overlay restored using the Coltène cementation system. | Procedure or surgery | BRILLIANT Crios |
Primary outcome
Annual wear rate
Time frame: 24 months
Digital Scanner +Geometrical Subtraction Software
1 secondary outcome
Functional properties, Biological properties and Esthetic properties
Time frame: 24 months
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 7 Jul 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A study testing SHOFU Hard blocks and BRILLIANT Crios in people with Wear, Occlusal, run by Cairo University.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 12 inclusion and 12 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 7 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Annual wear rate (time frame: 24 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 7 Jul 2026.