Skip to Content
MilliporeSigma
  • Immediate loading of screw-retained all-ceramic crowns in immediate versus delayed single implant placement.

Immediate loading of screw-retained all-ceramic crowns in immediate versus delayed single implant placement.

The International journal of prosthodontics (2013-09-03)
Stefan Vandeweghe, Costa Nicolopoulos, Eric Thevissen, Ryo Jimbo, Ann Wennerberg, Hugo De Bruyn
ABSTRACT

The aim of this study was to evaluate and compare the outcomes of immediately loaded all-ceramic crown restorations supported by implants placed in both mature bone and immediate extraction sockets. Forty-three tapered, external hex implants were placed immediately after extraction or in healed bone in a convenience sample of 38 patients from two clinics, with 23 implants immediately placed after tooth extraction and 20 placed in mature bone. Thirty implants were located in the maxilla and 13 in the mandible. Each surgical implant placement was followed by the fabrication of a screw-retained all-ceramic crown (zirconia-toughened alumina cylinder and layered with porcelain) that was then put into immediate function. Each patient was recalled annually for clinical and radiographic assessments. All implants were loaded immediately and all functioned successfully following a mean follow-up of 26 months. Significantly more bone loss was recorded around delayed implants compared with immediately placed ones. Smoking, platform switching, and jaw location did not influence peri-implant bone loss. Porcelain chipping was noted in the case of two crowns. The short-term outcome of prefabricated ceramic cylinders used to support a single screw-retained crown was regarded as successful. Immediate implant placement did not appear to increase the risk for implant failure and was accompanied by reduced peri-implant bone loss.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Zirconium, foil, thickness 0.1 mm, 99.98% trace metals basis
Sigma-Aldrich
Zirconium, rod, diam. 6.35 mm, ≥99% trace metals basis
Sigma-Aldrich
Zirconium, sponge, ≥99% trace metals basis
Sigma-Aldrich
Zirconium, powder, −100 mesh
Sigma-Aldrich
Zirconium(IV) oxide, nanoparticles, dispersion, <100 nm particle size (BET), 5 wt. % in H2O
Sigma-Aldrich
Zirconium(IV) oxide, nanopowder, <100 nm particle size (TEM)
Sigma-Aldrich
Zirconium(IV) oxide, powder, 5 μm, 99% trace metals basis
Sigma-Aldrich
Zirconium(IV) oxide, 99.99% trace metals basis (purity excludes ~2% HfO2)
Sigma-Aldrich
Zirconium(IV) oxide, nanoparticles, dispersion, <100 nm particle size (BET), 10 wt. % in H2O