When missing tooth structure or teeth are replaced, minimal biologic risk should be involved to re-establish function and esthetics. The increased use of the adhesive technique and preservation of dental tissues have greatly impacted conservative tooth preparation design. The development use of zirconia technology and all-ceramic systems has opened the potential for fabrication inlays zirconia bridges with durability and good aesthetics. The purpose of this study is to clinically evaluate the placement of inlay bridge made of a Y-TZP framework veneered with a pressed ceramic and bonded with a completely adhesive approach in the replacement of a single missing tooth.
This study evaluates the use of inlay bridge made of Zirconia and all ceramic systems with three designs in the replacement process of one single tooth (i.e. a missing premolar or molar.) The first design is going to be fabricated with CAD/CAM Zirconia and the occlusal surface from e-max press. The second design is going to be fabricated with CAD/CAM Zirconia and the occlusal surface from e-max press and the internal surface coated with glaze layer to improve the adhesion. The third design is going to be fabricated with CAD/CAM Zirconia and the occlusal surface from e-max press and the internal surface coated with a layer of e-max ceramic press to improve the adhesion.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
30
A coating of a glaze layer will be used at the inner surface of the bridge to improve adhesion
A coating of E-max Press layer will be used at the inner surface of the bridge to improve adhesion
Department of Fixed Prosthodontics, University of Damascus Dental School, Damascus, Syria
Damascus, Syria
Change in marginal fit
To examine if there is a gap between inlay margins and tooth cavity margins .It will be measured by a probe.
Time frame: Immediately within five minutes following cementation (T1), 3 months (T2), 6 months (T3), 12 months (T4) following application
Change in Material Integrity
To examine macroscopically the presence of cracks or fractures in the veneering ceramic (retainers or pontics) or any fractures at the connectors.
Time frame: Immediately within five minutes following cementation (T1), 3 months (T2), 6 months (T3), 12 months (T4) following application
Change in the Retention Status
The resistance of a prosthesis to displacement will be measured.
Time frame: Immediately within five minutes following cementation (T1), 3 months (T2), 6 months (T3), 12 months (T4) following application
Change in Marginal Color Matching
Examination will be done macroscopically to detect the presence of any difference in color between the margins of the tooth and inlays
Time frame: Immediately within five minutes following cementation (T1), 3 months (T2), 6 months (T3), 12 months (T4) following application
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