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This study aims to evaluate the clinical performance of the zirconia laminate veneer, a minimally invasive prosthetic restoration
Patients with indications for single tooth restoration with ceramic laminate veneers are recruited for the study. These indications include spaced, discolored, malformed, root canal-treated, chipped, and mildly crowded teeth. After providing written informed consent, all patients are randomly divided into two groups in a double-blind manner (participants and the outcomes assessor) in a 1:1 ratio, including the Zirconia group (intervention) and the Lithium Disilicate group (control). Each patient's tooth is prepared and restored with the corresponding laminate veneer material, that is, zirconia and lithium disilicate.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Zirconia laminate veneer | Experimental | Intervention: Single-tooth restoration using zirconia ceramic laminate veneers. Procedure: Tooth preparation following standard protocols for laminate veneer placement. Fabrication of zirconia laminate veneers. Cementation of zirconia laminate veneers with appropriate bonding protocol. Follow-Up: after 2 weeks, 6 months, and 12 months |
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| Lithium Disilicate laminate veneer | Active Comparator | Intervention: Single-tooth restoration using lithium disilicate ceramic laminate veneers. Procedure: Tooth preparation following standard protocols for laminate veneer placement. Fabrication of lithium disilicate laminate veneers. Cementation of lithium disilicate laminate veneers with appropriate bonding protocol. Follow-Up: after 2 weeks, 6 months, and 12 months |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Zirconia laminate veneer | Device | Zirconia veneers are milled with computer-aided manufacturing technology from multilayered zirconia discs with shade matched with adjacent teeth. After sintering, veneer surfaces are treated with a hydrofluoric acid-nitric acid mixture. Next, veneers are cut back if necessary to provide space for characterization. Veneers are bonded with a light-cured veneer adhesive system (Relyx Veneer LC, 3M, USA). |
| Measure | Description | Time Frame |
|---|---|---|
| Marginal and internal fit | Measurement of marginal and internal fit in micrometers with silicone replica method | Before veneer adhesion |
| Gingival health | Assessment of gingival index | 2 weeks, 6 months, 12 months |
| Periodontal pocket | Measurement of periodontal pocket depth in millimeters | 2 weeks, 6 months, 12 months |
| Evaluation criteria based on the modified United States Public Health Standard | Shade match, contour, fracture, loss of retention, hypersensitivity | 2 weeks, 6 months, 12 months |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| High Technical Center of Dentistry, School of Dentistry | Recruiting | Hanoi | Hanoi | 10000 | Vietnam |
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| ID | Term |
|---|---|
| D014084 | Tooth Avulsion |
| D019553 | Tooth, Nonvital |
| D014082 | Tooth Fractures |
| D018677 | Tooth Injuries |
| D014071 | Tooth Abnormalities |
| D003387 | Cracked Tooth Syndrome |
| D008310 | Malocclusion |
| ID | Term |
|---|---|
| D014076 | Tooth Diseases |
| D009057 | Stomatognathic Diseases |
| D014947 | Wounds and Injuries |
| D003788 | Dental Pulp Diseases |
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Zirconia Group (Intervention): Participants receive zirconia laminate veneers. Lithium Disilicate Group (Control): Participants receive lithium disilicate laminate veneers. Lithium disilicate is a standard ceramic material for laminate veneers.
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Double-blind. Both participants and the outcomes assessor are kept unaware of which ceramic laminate veneer material (Zirconia or Lithium Disilicate) the participants are receiving
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| Lithium Disilicate laminate veneer | Device | Lithium Disilicate veneers are milled with computer-aided manufacturing technology from lithium disilicate blocks with shade matched with adjacent teeth. After sintering, veneer surfaces are treated with hydrofluoric acid. Next, veneers are cut back if necessary to provide space for characterization. Veneers are bonded with a light-cured veneer adhesive system (Relyx Veneer LC, 3M, USA). |
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| D018640 |
| Stomatognathic System Abnormalities |
| D000013 | Congenital Abnormalities |
| D009358 | Congenital, Hereditary, and Neonatal Diseases and Abnormalities |