One-year Clinical Evaluation of Bulk-fill Versus Conventional Incremental Posterior Restoration by FDI Criteria

Study Overview
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Brief Summary
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restoring posterior teeth by bulk fll and nanofill composite and clinical evaluation of performance and durability of both restorations during one year follow up

Detailed Description
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The treated cavities will be divided into 2 groups, cavities will be incrementally layered with resin composite and each increment will be cured as directed by the manufacturer with the light curing unit (XL 3000; 3M/eSPe), with an energy higher than 450 mW/cm² (±50 mw/cm²) and other group of cavities will be restored by bulk fill composite (3M ESPE) as one increment then will be cured as directed by the manufacturer with the light curing unit. Articulation will be checked carefully with an articulating paper and occlusal adjustments will be performed using flame shaped carbide and diamond finishing burs (DENTSPLY) using water spray, restorations will be finished occlusally with finishing burs and finally polished with aluminium oxide polishing paste and a rubber cup (DENTSPLY).

Official Title
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One-year Clinical Evaluation of Bulk-fill Resin Composite Using FDI Criteria in Comparison to Conventional Incremental Posterior Restoration

Conditions
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Post Dental Restoration

Intervention / Treatment
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* Other: bulk fill composite
* Other: Nano resin composite (K Z350 xt)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Good oral hygiene.Patients must show no signs of orofacial pain. The presence of molar teeth requiring composite restorations for the treatment of primary carious lesions Exclusion Criteria: Teeth with abnormal periapical anatomy or caries that will be likely to result in very deep restorations. Teeth with old restorations or severely destructed dental crowns.Tempro-mandibular joint problems involving symptomatic pain.Pregnancy or breast feeding, acute and chronic systemic diseases, immune-compromised patients

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 38 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

Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: Bulk full composite (3M)<br>bulk fill composite in posterior class one cavities | Other: bulk fill composite<br>* cavities will be incrementally layered with resin composite and each increment will be cured as directed by the manufacturer with the light curing unit (XL 3000; 3M/eSPe), with an energy higher than 450 mW/cm² (±50 mw/cm²)<br>Other: Nano resin composite (K Z350 xt)<br>* cavities will be restored by bulk fill composite (3M ESPE) as one increment then will be cured as directed by the manufacturer with the light curing unit.<br>|
| Other: Incremental packing composite resin<br>Nano resin composite (K Z350 xt) restoration in class one cavities | Other: bulk fill composite<br>* cavities will be incrementally layered with resin composite and each increment will be cured as directed by the manufacturer with the light curing unit (XL 3000; 3M/eSPe), with an energy higher than 450 mW/cm² (±50 mw/cm²)<br>Other: Nano resin composite (K Z350 xt)<br>* cavities will be restored by bulk fill composite (3M ESPE) as one increment then will be cured as directed by the manufacturer with the light curing unit.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| clinical performance and durability of restoration | Outcome measure is Clinical performance and durability of composite resin restoration, Device for measurement is FDI criteria , Unit of measurement is Ranking system has 5 scores for each different criterion. Either restoration is clinically excellent, or good, or sufficient, or unsatisfactory, or clinically poor. | one year |