Two-Years Clinical Performance of Bulk-Fill High Viscosity Ormocer Versus Methacrylate-Based Resin Composite Restorative Systems: The Effect of Bulk-Fill Low-viscosity Resin Composite Liners in Class II Restorations.

M 11120520

This randomized clinical trial evaluated the clinical performance of class II resin composite restorations using bulk-fill high-viscosity ormocer versus methacrylate-based with or without a thin layer of bulk-fill low-viscosity (flowable) resin composite liners (BLRC) over 2 years. The null hypotheses in the study were as follows: (1) Different types of matrix structures (ormocer vs. methacrylate) have no effect on the marginal integrity of restorations; (2) A layer of bulk-fill resin compo-site liner of the same category would not affect the marginal or internal adaptation of restorations.

2020-01-15

2022-04-27

2023-06-17

Completed

30

Inclusion Criteria: * Patients having at least 4 posterior teeth with moderate occlusal-proximal carious lesions. * Patients ranging in age from 18 to 30 years. * patients with normal occlusion. Exclusion Criteria: General exclusion criteria: * Patients having severe chronic periodontitis. * Patients with orthodontic appliances. * Abnormal occlusion, parafunctional habits. * Allergy to any of the materials used in the study. Specific teeth exclusion criteria * Teeth with irreversible pulpitis or non-vital. * Fractured or cracked teeth. * Previously restored teeth. * Cavities with isthmus larger than intercuspal distance. * Teeth with deep sub-gingival cavity margins.

{'studyType': 'INTERVENTIONAL', 'phases': ['NA'], 'designInfo': {'allocation': 'RANDOMIZED', 'interventionModel': 'PARALLEL', 'interventionModelDescription': 'participants had at least four class II cavities in a split-mouth design and randomly each cavity was restored using one of four strategies( groups applied)', 'primaryPurpose': 'TREATMENT', 'maskingInfo': {'masking': 'DOUBLE', 'whoMasked': ['PARTICIPANT', 'INVESTIGATOR']}}, 'enrollmentInfo': {'count': 30, 'type': 'ACTUAL'}}

2023-09-13