title: Zirconia for teeth and implants: a case series.
abstract: This case series reports on the use of nonsilica-based high-strength full ceramics for different prosthetic indications. Fifty-two consecutive patients received tooth- or implant-supported zirconia reconstructions during a 2-year period. The observation period for reexamination was 12 to 30 months. The most frequent indications were single crowns and short-span fixed partial dentures. A few implant superstructures were screw-retained, whereas all remaining restorations were cemented on natural teeth or zirconia implant abutments. Clinical examination included biologic (probing depths, bleeding on probing) and esthetic (Papilla Index) parameters, as well as technical complications. No implant was lost or caused any problems, but two teeth were lost after horizontal fracture. Overall, the periodontal parameters were favorable. Fractures of frameworks or implant abutments were not observed. Abutment-screw loosening occurred once for one premolar single crown. Furthermore, five implant crowns in the posterior region exhibited chipping of the porcelain veneering material. With regard to esthetics, no reconstructions were considered unacceptable, but three crowns were remade shortly after delivery. In this short-term study, it was observed that biologic, esthetic, and mechanical properties of zirconia were favorable, and the material could be used in various prosthetic indications on teeth or implants.
authors.affiliation: Department of Prosthodontics, University of Bern, Bern, Switzerland.
authors.forename: Andrea
authors.initials: A
authors.lastname: Kollar
authors.forename: Sandra
authors.initials: S
authors.lastname: Huber
authors.forename: Ernö
authors.initials: E
authors.lastname: Mericske
authors.forename: Regina
authors.initials: R
authors.lastname: Mericske-Stern
mesh_terms: D000328:Adult; D000368:Aged; D000540:Alveolar Ridge Augmentation / Q000379:methods; D001857:Bone Matrix / Q000637:transplantation; D018786:Bone Substitutes / Q000627:therapeutic use; D003442:Crowns; D000044:Dental Abutments; D015921:Dental Implants; D003764:Dental Materials / Q000737:chemistry*; D003776:Dental Porcelain / Q000737:chemistry*; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D003801:Dental Veneers; D003779:Denture Design; D003830:Denture, Partial, Fixed; D004955:Esthetics, Dental; D005260:Female; D005500:Follow-Up Studies; D005881:Gingiva / Q000033:anatomy & histology; D005884:Gingival Hemorrhage / Q000145:classification; D006801:Humans; D008297:Male; D008567:Membranes, Artificial; D008875:Middle Aged; D010514:Periodontal Pocket / Q000145:classification; D013499:Surface Properties; D055815:Young Adult; D015040:Zirconium / Q000737:chemistry*
chemical_list: D018786:Bone Substitutes; D015921:Dental Implants; D003764:Dental Materials; D008567:Membranes, Artificial; D003776:Dental Porcelain; D015040:Zirconium; C028541:zirconium oxide