Clinical Performance of Short Fiber Reinforced Resin Composite Versus Indirect Nanohybrid Resin Composite Onlay Restorations.

Study Overview
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Brief Summary
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clinical performance of short fiber reinforced resin composite versus indirect nanohybrid resin composite onlay restorations in complex proximal cavities of molar teeth will be evaluated over one year.

Detailed Description
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Resin composite materials have been rapidly developed in the latest few years. Direct resin composite restorations become the golden standard for restoring intracoronal cavities. While for the extracoronal cavities, the indirect resin composite onlays tend to replace metallic restorations in most situations being more esthetic and conservative with lower cost (Rocca & Krejci, 2007). Indirect resin composite onlays usually are lab processed in two appointments but it can be made in one appointment through CAD/CAM technology or by flexible model technique (semidirect technique). These restorations offer more control on the proximal contacts and the anatomic form over the direct approach. Polymerization shrinkage occurs outside the patient mouth so the stresses are decreased and become limited to the width of the luting space. Annual failure rate (AFR) of indirect posterior resin composite restorations is up to 10% (Manhart et al, 2004). One of the advancement in resin composite technology is the evolution of short fiber reinforced resin composite (SFRC) material that allows making a direct onlay restoration possible thus offers less procedural steps and saves more time (Garoushi et al, 2013). This material is made to be used as a dentine substitute in the high stress-bearing areas. It is covered by a conventional resin composite filling to act as the enamel replacement this combination gives us a kind of biomimetic restoration.

Official Title
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Clinical Performance of Short Fiber Reinforced Resin Composite Restorations Versus Indirect Nanohybrid Resin Composite Onlay Restorations in Complex Proximal Cavities of Molars

Conditions
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Dental Restoration Failure of Marginal Integrity

Intervention / Treatment
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* Other: Ever X Posterior


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria Pulp asymptomatic vital carious upper or lower molars. Proximal complex carious cavities involving one or two weak cusps. Replacement of old amalgam or resin composite restoration due to recurrent caries or either tooth or restoration fracture. Presence of favorable occlusion. Healthy volunteers Exclusion Criteria: Teeth with signs and symptoms of irreversible pulpitis or pulp necrosis. Deep subgingival cavity margins. Possible future prosthodontic restoration of teeth. Severe periodontal problems. Medically compromised patients.

Ages Eligible for Study
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Minimum Age: 16 Years
Maximum Age: 55 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Short fiber RC<br>Short fiber reinforced resin composite restoration (Ever X Posterior, Gc Europe) that is used in high stress bearing areas as direct onlay restoration. | Other: Ever X Posterior<br>* Resin composite restoration can be made as a direct onlay<br>* Other names: Short fiber reinforced resin composite;|
| Active Comparator: Nanohybrid RC<br>Nanohybrid resin composite (GrandioSO, VOCO GmbH Germany ) that can be used to make indirect restorations in posterior teeth. | Other: Ever X Posterior<br>* Resin composite restoration can be made as a direct onlay<br>* Other names: Short fiber reinforced resin composite;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in the Clinical performance | Measured using modified USPHS criteria for clinical evaluation of restoration failure | Change from the Baseline at six months and 12 months. | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Short fiber reinforced resin composite, Nanohybrid resin composite, Indirect resin composite restoration