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

Summary: 
      The aim of this study is to compare the clinical performance of composite veneers performed
      in two different ways, indirect and direct methods over a period of 6-year.

      30 volunteer patients without systemic diseases and who applied to Ege University School of
      Dentistry for the esthetic restoration of their anterior diastema (gap) were selected
      according to inclusion and exclusion criteria. The closure of 102 diastema was randomly
      performed with prefabricated composite resin veneers (n=15; indirect method- Componeer,
      Coltène, Altstätten, Switzerland) or direct composite resin veneers (n=15; direct method-
      Essentia, GC, Japan). These restorations were clinically evaluated at baseline, 1-2-6-year by
      two experienced and blind examiners according to modified Ryge criteria (USPHS criteria).
      Color match, marginal discoloration, anatomic form, marginal adaptation, secondary caries,
      surface roughness, retention, and polishing retention were evaluated for that purpose.
      Statistical analysis was performed with McNemar and Chi-square tests (p<0.05).
    

Detailed description: 
      The aim of this study is to compare the clinical performance of composite veneers performed
      in two different ways, indirect (Componeer) and direct methods (Essentia) over a period of
      6-year.

      The study protocol was approved by the Ethical Committee of Ege University, Izmir, Turkey
      (16-2.1/8; 01.04.2016). 30 patients without any systemic diseases (10 males, 20 females, mean
      age: 34) and with aesthetic complaints on their anterior teeth were treated with 102
      restorations (48 Componeer and 54 Essentia).

      In Group 1; 48 teeth (15 patients) were restored with Componeer prefabricated veneers
      (Coltène, Altstätten, Switzerland) in combination with Synergy D6 nanohybrid resin composite
      (Coltène) and One Coat Bond (Coltène) adhesive system. In Group 2; 54 teeth (15 patients)
      were restored with Essentia (GC, Japan) micro-hybrid resin composite in combination with
      G-Premio Bond (GC) adhesive system.

      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. Both groups used the
      "Button Try" technique for color selection. Componeer sizing guide was used for size
      selection in Group 1. 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 rubber dam (OptraDam, Ivoclar Vivadent, Liechtenstein). 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. One Coat
      Bond (Coltene) adhesive system was applied on the labial surfaces of the teeth in accordance
      with user instructions in both groups. In Group 1; Synergy D6 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)
      and polished with a polishing paste (Prisma Gloss Extra Fine, Dentsply, NY, ABD) and a felt
      wheel.

      In Group 2; Essentia (GC) micro-hybrid resin composite with dentin color was placed on the
      labial surfaces of the teeth and light-cured (D-Light Pro, GC). After that layer, Essentia
      enamel shades were placed over the labial surface of the tooth and light-cured for 20 s from
      each surface. The diamond bur contouring was performed and polishing discs (Super-Snap
      Rainbow Technique Kit, SHOFU) were used. For polishing purposes, a polishing paste (Prisma
      Gloss Extra Fine, Dentsply, NY, ABD) and a felt Wheel were used.

      In group 1; 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, 1-2-6-year using
      Modified Ryge Criteria (USPHS Criteria). Statistical analysis was performed with McNemar and
      Chi-square tests (p<0.05).
    

Intervention name(s): Componeer prefabricated veneers; Essentia resin composite veneers
Intervention type(s): Procedure; Procedure
Intervention description(s): Individual Randomized Clinical Trial; Individual Randomized Clinical Trial
Allocation: Randomized
Intervention model: Parallel Assignment
Intervention model description: Individual Randomized Assignment
Masking: Double (Participant, Care Provider)
Primary purpose: Treatment
Keywords: veneers; prefabricated veneers; anterior restorations