Fracture resistance of single‐tooth implant‐supported zirconia‐based indirect composite‐layered molar restorations

Abstract

The fracture resistance of single-tooth implant-supported zirconia-based indirect composite-layered molar crowns primed with Estenia Opaque Primer for zirconia frameworks (ZIC-E) is comparable to that of porcelain-fused-to-metal (PFM) and zirconia-based all-ceramic (ZAC) restorations. Application of Estenia Opaque Primer to zirconia ceramic framework provides superior fracture resistance in implant-supported zirconia-based indirect composite-layered molar crowns.

In vitro comparison of fracture load of implant-supported, zirconia-based, porcelain- and composite-layered restorations after artificial aging

“…Thus, all the present zirconia-based restorations have the potential to withstand physiologic masticatory forces. The fracture loads obtained in the current study might not differ from those of the previous study without fatigue testing (Table 2) 16) . This finding indicates that the zirconia-based porcelain-and composite-layered restorations presently tested can tolerate long-term masticatory stresses in the posterior region.…”

“…Adaptation of all completed specimens was verified with the same procedure used for the ZAC group. 16) . Different lowercase letters indicate a significant difference between means (Tukey's HSD test, p<0.05).…”

“…In vitro studies of bond performance between indirect composite materials and zirconia ceramics for zirconia-based composite-veneered restorations found that application of a hydrophobic phosphate monomer (MDP)/initiator combination resulted in satisfactory initial and durable bond strength between the two materials 14,15) . One study evaluated the fracture resistance of implant-supported, single-tooth, zirconiabased composite-layered molar restorations 16) , which have a potential fracture resistance comparable to that of porcelain-fused-to-metal and zirconia-based all-ceramic restorations. Furthermore, application of a primer containing MDP to zirconia ceramic copings enhanced initial fracture resistance of implant-supported, zirconia-based, composite-layered restorations.…”

Shear bond strengths of an indirect composite layering material to a tribochemically silica-coated zirconia framework material

“…Previous studies of bond strength of layering porcelain to zirconia frameworks [11][12][13][14] indicated that values were comparable to those of layering porcelain to metal alloy. Indirect composite materials -an alternative to feldspathic porcelain for layering materials-have recently been introduced for use with zirconia-based restorations [15][16][17][18] . Several studies found that the shear bond strength of indirect composite materials to zirconia frameworks was greater than 20 MPa 15,17) , which is above the threshold for clinically acceptable composite-metal and compositeceramic bonds 19,20) .…”

“…Fushiki et al 16) demonstrated that the use of a silane coupling agent and opaque material yielded stable bond strength of the indirect composite and feldspathicporcelain-coated zirconia, and suggested that feldspathic porcelain coating of zirconia frameworks was an effective method to achieve clinically acceptable bond strengths. Furthermore, an in vitro study indicated that the fracture resistance of implant-supported zirconia-based restorations, in which an indirect composite material was veneered onto zirconia frameworks pretreated with MDP-containing primer, was equal to that of porcelain-fused-to-metal or zirconia-based all-ceramic restorations 18) . Indirect composite materials have a beneficial effect on implant-supported posterior restorations.…”