Cracked Tooth Syndrome, Dislocation, Tooth, Teeth, Endodontically-Treated, Tooth Abnormalities, Tooth Crowding, Tooth Fracture, Tooth Injuries
Conditions
Keywords
ceramic laminate veneers, zirconia, lithium disilicate, computer-aided manufacturing
Brief summary
This study aims to evaluate the clinical performance of the zirconia laminate veneer, a minimally invasive prosthetic restoration
Detailed description
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.
Interventions
DEVICEZirconia laminate veneer
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).
DEVICELithium Disilicate laminate veneer
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).
Sponsors
Hanoi Medical University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)
Masking description
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
Intervention model description
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.
Eligibility
Sex/Gender
ALL
Age
18 Years to 90 Years
Healthy volunteers
No
Inclusion criteria
* Spaced tooth * Discolored tooth * Malformed tooth * Root canal-treated tooth * Chipped tooth * Mildly crowded tooth
Exclusion criteria
* Tooth bruxism * Inadequate enamel for bonding * Large restoration exists * Bad oral habits harming restoration
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Evaluation criteria based on the modified United States Public Health Standard | 2 weeks, 6 months, 12 months | Shade match, contour, fracture, loss of retention, hypersensitivity |
| Marginal and internal fit | Before veneer adhesion | Measurement of marginal and internal fit in micrometers with silicone replica method |
| Gingival health | 2 weeks, 6 months, 12 months | Assessment of gingival index |
| Periodontal pocket | 2 weeks, 6 months, 12 months | Measurement of periodontal pocket depth in millimeters |
Countries
Vietnam
Outcome results
None listed