Two‐piece zirconia implants supporting all‐ceramic crowns: A prospective clinical study

Abstract

ObjectivesThe aim of this prospective clinical study is to evaluate the safety and efficacy of a new all-ceramic implant system to replace missing teeth in partially edentulous patients.Material and methodsThirty-two partially edentulous, systemically healthy patients were treated with 49 two-piece zirconia implants (ZERAMEX® T Implant System). Zirconia abutments were connected with adhesive resin cement. Single-unit full-ceramic crowns were cemented. The cases have been followed for 588±174 days after loading (range 369–889 days). All patients have been re-evaluated 1 year after loading.ResultsThe cumulative survival rate 1 year after loading was 87% implants. All failures were the result of aseptic loosening, and no implants were lost after the first year. The results of the other cases were good, and the patients were very satisfied. The cumulative soft tissue complication rate was 0%, the cumulative technical complication rate was 4% implants, the cumulative complication rate for bone loss >2 mm was 0%, and the cumulative esthetic complication rate was 0%. Including the data from 20 patients treated with an earlier version of the system, an over-all 2-year cumulative survival rate of 86% was calculated for a total of 76 two-piece zirconia implants supporting all-ceramic crowns in 52 patients.ConclusionsReplacement of single teeth in the posterior area was possible with this new full-ceramic implant system. Failures were due to aseptic loosening.

Reconstruction of Single Tooth Loss with One-Piece and Two-Piece Zirconia Implants: Case Report

“…Cionca et al reported that cumulative survival rate was 87% after 1 year loading. 17 The stated failure reason was aseptic loosening, and no implants were lost after first year and the results of the other cases were good. In this clinical report, single-tooth replacement with one-piece and twopiece zirconia implant treatment in the anterior region were evaluated.…”

“…[11][12][13][14][15][16] Firstly one-piece implants were introduced. 17 However there are ambitions to fabricate two-piece zirconia comparable to two-piece titanium implants. 13 The purpose of this article is to give information about the dental zirconia implants and present 4 cases treated with one-piece and two-piece zirconia implants located in the anterior maxillary region.…”

Zirconia: The Material of Choice in Implant Dentistry? An Update

“…The two-part design is also a requirement for a flexible restoration with a lot of freedom. The stability of zirconium oxide is similar to titanium: strength tests (ISO 14801) show the high break resistance and durability [29].…”

Ceramic Dental Implants: A Literature Review

“…Two piece can be corrected [28] Adherence to Plaque Does not adhere to plaque [32] Adheres to Plaque [ 32] Fracture Tendency It may fracture [20] No or less prone to fractures [28] Fracture Tendency It may fracture [20] No or less prone to fractures [28] Margin At gingival level [32] At bone level [32] Maintenance Easier to maintain [32] Harder to maintain [32] Corrosion Resistant to Corrosion [26] Metal corrosion can occur [26] Allergic Reactions No allergic reaction [32] May have allergic reaction [20] Osseo-integration Less [26] More [26] Surface Roughness Smooth [20] Rough(more bone apposition) [20] Discussion…”