Assessment of Occlusal Veneer Restorations Performance in Posterior Teeth

NCT ID: NCT07088029

Last Updated: 2025-07-28

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Clinical Phase: NA
• Total Enrollment: 8 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-08-01
• Study Completion Date: 2026-08-01

Brief Summary

The aim of the research is to study the mechanical behavior and clinical performance of veneers in posterior teeth. Clinical assessment and experimentation of two types of occlusal veneers will be conducted to evaluate their behavior.

Detailed Description

Occlusal veneers are restorations that restore the occlusal surface without axial wall involvement, allowing restoration of form, function, and esthetics of compromised or destroyed occlusal tooth structure in a conservative way as part of their treatment plan and the restorative process. The performance of occlusal veneer restorations is of paramount importance, as it determines the outcome and behavior of the final restoration. No ideal study has been conducted to evaluate teeth restored with occlusal veneer restorations. Evaluation must include all aspects of clinical performance, as some of the materials used in their fabrication have not been fully studied and should be studied to evaluate their clinical behavior using modified USPHS (United States Public Health Service) criteria. Which includes surface texture, anatomical form/wear, marginal integrity, marginal discoloration, secondary caries, color match and post-operative hypersensitivity.

Conditions

Restoration of Posterior Teeth; Occlusal Veneers on Posterior Teeth

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

Direct occlusal veneer ( Occlusal Veneer of Composite resin)

Split-mouth design, (right/left posterior tooth) will be restored with an occlusal veneer composite resin (Direct occlusal veneer). Directly fabricated occlusal veneers are a conservative approach, however, it requires a great skill from the operator to assure good margins and occlusal anatomy. Direct veneers are fabricated from composite resin and can be finished in a single visit, but longer chair time is required, in addition to the low wear resistance compared to ceramics. However, direct occlusal veneers have the benefit of resiliency close to that of natural dental tissue.

Group Type: EXPERIMENTAL

Direct occlusal veneer ( Occlusal Veneer of Composite resin)

Intervention Type: PROCEDURE

Split-mouth design, (right/left posterior tooth) will be restored with an occlusal veneer composite resin (Direct occlusal veneer). Directly fabricated occlusal veneers are a conservative approach, however, it requires a great skill from the operator to assure good margins and occlusal anatomy. Direct veneers are fabricated from composite resin and can be finished in a single visit, but longer chair time is required, in addition to the low wear resistance compared to ceramics. However, direct occlusal veneers have the benefit of resiliency close to that of natural dental tissue.

Indirect occlusal veneer (Occlusal veneer of lithium disilicate)

Split-mouth design, (right/left posterior tooth) will be restored with an Indirect occlusal veneer (Occlusal veneer of lithium disilicate). Indirectly fabricated occlusal veneers of lithium disilicate allow better control and design of the occlusal anatomy and proximal contacts, in addition to possessing better mechanical properties and fracture strength when compared to direct occlusal veneers. However, indirect occlusal veneers are lab fabricated, consequently, more clinical visits are required.

Group Type: ACTIVE_COMPARATOR

Indirect occlusal veneer (Occlusal veneer of lithium disilicate)

Intervention Type: PROCEDURE

Split-mouth design, (right/left posterior tooth) will be restored with an Indirect occlusal veneer (Occlusal veneer of lithium disilicate). Indirectly fabricated occlusal veneers of lithium disilicate allow better control and design of the occlusal anatomy and proximal contacts, in addition to possessing better mechanical properties and fracture strength when compared to direct occlusal veneers. However, indirect occlusal veneers are lab fabricated, consequently, more clinical visits are required.

Interventions

Indirect occlusal veneer (Occlusal veneer of lithium disilicate)

Split-mouth design, (right/left posterior tooth) will be restored with an Indirect occlusal veneer (Occlusal veneer of lithium disilicate). Indirectly fabricated occlusal veneers of lithium disilicate allow better control and design of the occlusal anatomy and proximal contacts, in addition to possessing better mechanical properties and fracture strength when compared to direct occlusal veneers. However, indirect occlusal veneers are lab fabricated, consequently, more clinical visits are required.

Intervention Type: PROCEDURE

Direct occlusal veneer ( Occlusal Veneer of Composite resin)

Split-mouth design, (right/left posterior tooth) will be restored with an occlusal veneer composite resin (Direct occlusal veneer). Directly fabricated occlusal veneers are a conservative approach, however, it requires a great skill from the operator to assure good margins and occlusal anatomy. Direct veneers are fabricated from composite resin and can be finished in a single visit, but longer chair time is required, in addition to the low wear resistance compared to ceramics. However, direct occlusal veneers have the benefit of resiliency close to that of natural dental tissue.

Intervention Type: PROCEDURE

Other Intervention Names

Occlusal veneer of lithium disilicate; Occlusal Veneer of Composite resin

Eligibility Criteria

Inclusion Criteria

• Normal occlusion
• 25-35 years old
• Males or females having class II cavities indicated for occlusal veneers

Exclusion Criteria

• Parafunctional habits
• Abnormal occlusion
• Extremely high caries risk patients
• Temporomandibular problems

• Minimum Eligible Age: 25 Years
• Maximum Eligible Age: 35 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Ain Shams University

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Central Contacts

Menna Aboelnor, MSc, PhD

Role: CONTACT

mennatallamoataz@dent.asu.edu.eg

20161791516

Other Identifiers

FDASU-Rec ID042514

Identifier Type: -

Identifier Source: org_study_id