Retention forces of 14-unit zirconia telescopic prostheses with six double crowns made from zirconia—an in vitro study

Abstract

It has been shown that the RFs of the presented telescopic system are comparable to existing double-crown systems.

Long-term behavior of double crown retained dentures with metal and metal-free secondary crowns and frameworks made of Vectris© on all-ceramic primary crowns: a prospective, randomized clinical trial up to 14 years

“…However, these may encounter similar problems regarding the substitution of the secondary structure. Up to now, only singular case reports or in vitro studies have been published on metal-free, removable dentures on double crowns respectively on full-ceramic bar-retained dentures, which is why data are scarce, and the field requires further detailed and long-term studies [73][74][75]. In the case reports available, friction of prostheses was achieved using acrylic or nylon materials.…”

Effects of taper and space settings of telescopic Ce-TZP/A crowns on retentive force and settling

“…The shrinkage of the disk was 16.96% in outer diameter direction, 17.05% in thickness direction. Furthermore, the CAD/CAM is suitable for producing telescopic crown because the design of the dental prosthetics can be freely modified before production [14][15][16][17] . A great deal of research has already been conducted on the retentive force of telescopic crowns dentures made using dental alloys [18][19][20] .…”

Retention Load Values of Telescopic Crowns Made of Y-TZP and CoCr with Y-TZP Secondary Crowns: Impact of Different Taper Angles

“…Especially in orthopedic surgery, ceramic materials have proven themselves for a long time [1,2]; the reason they are being used is based on their excellent mechanical properties: temperature stability, strength and resistance to acids and alkalis [3]. In addition, dental medicine has recognized a wide range of other applications of the material in the field: It is used for crowns [4], fixed dental prostheses (FDPs) [5], implant abutments [6], removable partial dentures (RDPs) [7], etc . Consequently, ZrO 2 has become a widely used material in dentistry [4,6,8,9,10,11] because of its excellent properties such as biocompatibility [1,2], mechanical strength, aesthetic appearance and chemical resistance [9,10,11], and the material has also proven outstanding biocompatibility in clinical studies [1,2].…”

“…Y-TZP was also used and studied as a material for telescopic crown systems [7,9]. Most of these studies assessed assemblies with Y-TZP primary crowns and secondary crowns of a different material, especially gold alloy.…”