Retrospective Long-Term Clinical Outcome of Feldspathic Ceramic Veneers

Abstract

The purpose of this study was to evaluate the clinical outcome of feldspathic ceramic laminate veneers over a 7-year period using minimally invasive techniques, such as vertical preparation (without prosthetic finish line), or no preparation (no-prep). A total of 170 feldspathic ceramic veneers were cemented in the anterior region, including 70 maxillary and 100 mandibular veneers, after special conditioning of the teeth and restorations. The veneers were evaluated using the FDI World Dental Federation criteria evaluation kit after recalling all the patients between February and June 2021. In total, 14 feldspathic veneers failed and were replaced with lithium disilicate because of core fracture, and 10 cases of chipping occurred on the ceramic surface and were polished. The overall survival rate was 91.77% for up to 7 years of function, with a failure rate of 8.23%. In this retrospective survival analysis, the failures, including the fracture of veneers and dental hard tissue, occurred both in prep and no-prep teeth. No failures were observed in veneers with a maximum thickness of 0.5 mm compared to those with a maximum thickness of 1 mm, 1.5 mm, 2 mm, and 2.5 mm.

Color Assessment of Feldspathic Ceramic with Two Different Thicknesses, Using Multiple Polymeric Cements

“…When using a thinner ceramic, the fraction of light that is not reflected penetrates its surface, where it is mostly transmitted, and as the ceramic thickness increases, the translucency decreases [ 25 , 50 ]. Therefore, we used different ceramic thicknesses of 0.5 mm [ 2 , 51 , 52 , 53 ] and 0.8 mm [ 24 , 54 , 55 ]. Composite discs 1 mm in thickness were used as a substrate to standardize the background and create a common clinical situation [ 27 , 47 , 56 ].…”

Influence of the Operator`s Experience, Working Time, and Working Position on the Quality of the Margin Width: In Vitro Study

“…In a study conducted by SG Mihali et al, using minimal invasive preparation is essential in adhesive dentistry. The authors observed no failures for veneers with a maximum thickness of 0.5 mm [ 33 ]. Rammersberg et al showed that a minimally invasive 0.5 mm width of the chamfer would result in good stability for posterior metal-free Artglass crowns cemented by adhesive technique [ 34 ].…”

Técnica de Preparación Biológicamente Orientada: Una alternativa para rehabilitar dientes e implantes

“…En rehabilitación oral se encontraron 479 casos clínicos empleando esta técnica en coronas, carillas y puentes fijos con un periodo de seguimiento de 6 años; llama la atención la denominada "ortodoncia protésica o POA" que permite movimientos dentales; por ejemplo, si se requiere un movimiento mesial del pilar, se desgasta más su lado opuesto distal para que el diente pueda moverse mesialmente. La evidencia científica de este enfoque protésico fue escasa, tan solo 3 casos clínicos ocuparon POA con un seguimiento mínimo de un año (4)(5)8,(12)(13)(14)(15)(16)18,19,(22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35) .…”

“…Al igual que Comlekoglu (45) , quien observa que el BOPT soporta mayor tensión en el margen de las restauraciones a comparación del hombro y chaflán que presentan valores más bajos y, por lo tanto, mayor resistencia. Sin embargo, García et al (19) , demostraron para cementar las prótesis, seguido de la colocación de glicerina para eliminar la capa inhibida de oxígeno y se retira cualquier tipo de excesos (8,9,(11)(12)(13)(14)19,20,28,31,33,35,45) .…”