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The current study intends to evaluate the effect of cervical margin relocation with different restorative materials on three-year clinical performance of indirect Computer-Aided-Design (CAD)/ Computer-Aided-Manufacture (CAM) onlay restorations. This study is designed to test the null hypothesis that the three-year clinical performance of onlay restorations is significantly affected by cervical margin relocation with different restorative materials.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Highly viscous Glass Ionomer | Experimental | Highly viscous glass ionomer restoration is used to elevate the subgingival cervical margin in deep class II cavities before receiving cad/cam onlay restoration |
|
| Low shrinkage Flowable Composite | Experimental | Low shrinkage Flowable Composite restoration is used to elevate the subgingival cervical margin in deep class II cavities before receiving cad/cam onlay restoration |
|
| Resin Modified Glass Ionomer | Experimental | Resin Modified Glass Ionomer restoration is used to elevate the subgingival cervical margin in deep class II cavities before receiving cad/cam onlay restoration |
|
| Bioactive Ionic Resin | Experimental | Bioactive Ionic Resin restoration is used to elevate the subgingival cervical margin in deep class II cavities before receiving cad/cam onlay restoration |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Highly viscous glass ionomer (cervical margin relocation) | Procedure | different dental restorative materials used to relocate deep cervical margins before receiving onlay restorations |
| Measure | Description | Time Frame |
|---|---|---|
| Gingiva | Gingival Index Scale from 0 to 3 will be used for evaluation considering that score 0 represents normal gigiva while score 3 represents severely inflamed gingiva | three year follow up |
| Modified World Dental Federation (FDI) clinical Criteria |
Descriptive scale from 1 to 5. Note: 1 is clinically excellent 5 is clinically poor. Scores(1-3) are considered sufficient The overall cumulative success rate of restorations will be evaluated | three year follow up |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Faculty of dentistry , Mansoura University | Al Mansurah | Dakahlia Governorate | Egypt |
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double blind
| Low shrinkage Flowable Composite (cervical margin relocation) | Procedure | different dental restorative materials used to relocate deep cervical margins before receiving onlay restorations |
|
| Resin Modified Glass Ionomer (cervical margin relocation) | Procedure | different dental restorative materials used to relocate deep cervical margins before receiving onlay restorations |
|
| Bioactive Ionic Resin (cervical margin relocation) | Procedure | different dental restorative materials used to relocate deep cervical margins before receiving onlay restorations |
|
| ID | Term |
|---|---|
| D003731 | Dental Caries |
| ID | Term |
|---|---|
| D017001 | Tooth Demineralization |
| D014076 | Tooth Diseases |
| D009057 | Stomatognathic Diseases |
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