3-year Clinical Performance of Prefabricated and Composite Veneers
Condition: Dental Diseases; Tooth Discoloration
MeSH terms: Stomatognathic Diseases; Tooth Discoloration
Study type: Interventional

Summary: 
      The aim of this study was to evaluate the clinical performances of Edelweiss prefabricated
      veneers and direct resin composite restorations (Ceram-X Duo SphereTec) performed with U-
      veneer transparent templates used for anterior diastema closure and tooth reshaping over
      3-year.

      The patient group consisted of individuals who applied for aesthetic complaints on their
      anterior teeth. 21 volunteer individuals without systemic disease were included in the study.
      Patients were randomly selected for each group. In Group 1; 38 teeth (10 patients) were
      restored with Edelweiss prefabricated veneers (Edelweiss Dentistry) in combination with
      Edelweiss nanohybrid resin composite (Edelweiss Dentistry) and Prime&Bond Universal (Dentsply
      Sirona) adhesive system. In Group 2; 36 teeth (11 patients) were restored with Ceram-X Duo
      SphereTec (Dentsply Sirona) resin composite in combination with U- veneer (Ultradent)
      transparent templates and Prime&Bond Universal adhesive systems. Properties of the
      restorations were evaluated at baseline, 6, 12, 24, and 36 months using Modified Ryge
      Criteria (USPHS Criteria). Data were evaluated using Chi-Square and Fisher's Exact tests
      (p=0.05).
    

Detailed description: 
      The aim of this study was to evaluate the clinical performances of Edelweiss prefabricated
      veneers and direct resin composite restorations (Ceram-X Duo SphereTec) performed with U-
      veneer transparent templates used for anterior diastema closure and tooth reshaping over
      3-year.

      The study protocol was approved by the Ethical Committee of Ege University, Izmir, Turkey
      (18-11.1T/15; 28.11.2018). 21 patients (1 male, 20 females, mean age: 35) with aesthetic
      complaints on their anterior teeth were treated with 74 restorations. 21 volunteer
      individuals without systemic disease were included in the study. Patients were randomly
      selected for each group. In Group 1; 38 teeth (10 patients) were restored with Edelweiss
      prefabricated veneers (Edelweiss Dentistry) in combination with Edelweiss nanohybrid resin
      composite (Edelweiss Dentistry) and Prime&Bond Universal (Dentsply Sirona) adhesive system.
      In Group 2; 36 teeth (11 patients) were restored with Ceram-X Duo SphereTec (Dentsply Sirona)
      resin composite in combination with U- veneer (Ultradent) transparent templates and
      Prime&Bond Universal adhesive systems.

      Periodontal treatments, fillings, and bleaching treatments were performed, if necessary,
      before any veneer treatment. For the pre-treatment records; 3 photographs (smile, anterior
      occlusion, and upper anterior teeth alone) were taken from each patient. The "Button Try"
      technique was used for color selection in both groups. Edelweiss sizing guide was used for
      size selection in Group 1. U-Veneer (Ultradent) transparent templates were tried on the
      labial surfaces of teeth to select the correct size in Group 2. Then teeth were cleaned with
      non-fluoride pumice (Cleanic; Kerr Dental, ABD) using a polishing brush. Isolation of the
      teeth and retraction of the lips were achieved with a disposable mouth retractor (OptraGate,
      Ivoclar Vivadent). Prefabricated veneers were prepared for the cementation process in Group
      1. Then the labial surfaces were etched using 36% phosphoric acid for 30 s. The etched
      surfaces were rinsed for 30 s and dried. Prime&Bond Universal (Dentsply Sirona) adhesive
      system was applied on the labial surfaces of the teeth in accordance with user instructions
      in both groups. In Group 1; Edelweiss nano hybrid resin composite was placed on the inner
      surfaces of the prefabricated veneers before being applied on appropriate teeth. Then the
      restorations were light-cured for 40 s from each surface (D-Light Pro, GC). In Group 2;
      Ceram-X Duo SphereTec (Dentsply Sirona) nanohybrid resin composite with dentin color was
      placed on the labial surfaces of the teeth and light-cured (D-Light Pro, GC). After that
      layer, Ceram-X Duo SphereTec (Dentsply Sirona) enamel shades were placed on the inner surface
      of the transparent template and pressed against the labial surface of the tooth. After the
      removal of the excess materials, the resin composite veneer was light-cured for 20 s from
      each surface. Then the transparent template was removed.

      In both groups; gingival borders were adapted with contouring and polishing discs (Super-Snap
      Rainbow Technique Kit, SHOFU). Then proximal surfaces were polished using proximal sandpaper
      strips. Occlusion was checked for premature contacts. Two calibrated observers who were
      blinded to the objective of this study performed the evaluations. Color match, marginal
      adaptation, marginal discoloration, anatomic form, retention, secondary caries, and gloss
      retention were the properties evaluated for the restorations at baseline, 6, 12, 24, and 36
      months using Modified Ryge Criteria (USPHS Criteria). Data were evaluated using the
      Chi-Square and Fisher's Exact tests (p=0.05).
    

Intervention name(s): Edelweiss prefabricated veneers; Ceram-X Duo SphereTec with U-Veneer
Intervention type(s): Procedure; Procedure
Intervention description(s): Individual Randomized Clinical Trial; Ceram-X Duo SphereTec with U-Veneer
Allocation: Randomized
Intervention model: Parallel Assignment
Intervention model description: Individual Randomized Assignment
Masking: Double (Participant, Care Provider)
Primary purpose: Treatment
Keywords: veneers; anterior restorations; resin composite; prefabricated veneers