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This study aims to evaluate the effectiveness of various finishing and polishing techniques for composite resins used in dental restorations, with a focus on minimizing discoloration and surface roughness over time. Discoloration due to plaque accumulation and surface staining can lead to esthetic concerns, resulting in premature restoration replacement and increased costs. Prior research highlights that esthetic failures, such as color alterations and surface staining, are key reasons for the failure of anterior restorations. Given the contradictory findings in previous studies on finishing and polishing methods, this research seeks to determine whether one-step polishing system will have the same effect as the multistep system in terms of esthetic performance and surface roughness of nanohybrid resin composite class IV restorations. The main operator will compare between OneGloss (Shofu) the intervention and Super-Snap X-treme (Shofu) the comparator. Patients will be evaluated immediately following polishing then after 3 months, 6 months, and 12 months.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Intervention | Experimental | One-step polishing system with nanohybrid resin composite restorations |
|
| Compartor | Active Comparator | Multistep system polishing system with nanohybrid resin composite restorations. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| One-step polishing system with nanohybrid resin composite restorations. | Procedure | one-step polishing system using OneGloss by Shofu |
|
| Measure | Description | Time Frame |
|---|---|---|
| Surface Luster (success rate) | Scoring system (ordinal) 5: Luster comparable to enamel 4: Slightly dull, not noticeable from speaking distance, some isolated pores 3: Dull surface but acceptable if covered with film of saliva, multiple pores on more that one-third of the surface 2: Rough surface, cannot be masked by saliva film, simple polishing not sufficient 1: Very rough, unacceptable plaque-retentive surface | 24hours, 3 months, 6months and 12 months |
| Measure | Description | Time Frame |
|---|---|---|
| Surface Staining | Scoring system (ordinal) 5: No staining 4: Minor Staining, easily removable by polishing 3: Moderate surface staining that may also be present on other teeth, not esthetically unacceptable 2: Unacceptable surface staining, major intervention necessary 1: severe surface and/or subsurface staining, not acceptable for intervention | 24hours, 3 months, 6months and 12 months |
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Inclusion Criteria:
Patient related criteria:
Tooth related criteria
Exclusion Criteria:
Patient related criteria
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Noreen A Labib, Masters Degree student | Contact | +201068487006 | noreen.labib@dentistry.cu.edu.eg |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Cairo University | Giza | Manial | Egypt |
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statistician
| Multistep system polishing system Super-Snap X-treme (Shofu) with nanohybrid resin composite restorations. | Procedure | A multi-step polishing system |
|
| Marginal Staining | Scoring system (ordinal) 5 No staining 4 Minor staining, easily removable by polishing 3 Moderate marginal staining, not esthetically unacceptable 2 Pronounced marginal staining; major intervention necessary 1 Deep marginal staining, not accessible for intervention | 24hours, 3 months, 6months and 12 months |
| Color Match | Scoring system (ordinal)
| 24hours, 3 months, 6months and 12 months |
| Surface Roughness | Surface roughness means (Ra) | 24hours, 3 months, 6months and 12 months |