Long-term performance of implant-supported metal-ceramic and all-ceramic single crowns

• Verfasst von: Rammelsberg, Peter [VerfasserIn]
• Verfasst von: Lorenzo Bermejo, Justo [VerfasserIn]
• Verfasst von: Kappel, Stefanie [VerfasserIn]
• Verfasst von: Meyer, André [VerfasserIn]
• Verfasst von: Zenthöfer, Andreas [VerfasserIn]
• Titel: Long-term performance of implant-supported metal-ceramic and all-ceramic single crowns
• Verf.angabe: Peter Rammelsberg, Justo Lorenzo Bermejo, Stefanie Kappel, André Meyer, Andreas Zenthöfer
• Jahr: 2020
• Jahr des Originals: 2019
• Umfang: 8 S.
• Fussnoten: Available online 16 December 2019 ; Gesehen am 04.08.2020
• Titel Quelle: Enthalten in: Journal of prosthodontic research
• Ort Quelle: Amstedam [u.a.] : Elsevier, 2009
• Jahr Quelle: 2020
• Band/Heft Quelle: 64(2020), 3, Seite 332-339
• ISSN Quelle: 1883-1958
• DOI: doi:10.1016/j.jpor.2019.09.006
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: All-ceramic
• Sach-SW: Chipping
• Sach-SW: Complications
• Sach-SW: Crown
• Sach-SW: Implant
• K10plus-PPN: 1694178285

Abstract

Purpose - To evaluate failure rates and incidence of chipping for metal-ceramic and all-ceramic implant-supported single crowns (SCs). - Methods - Six hundred and fifty-two implant-supported SCs placed in 404 patients (mean age: 57.8 years; 193 male; mean SCs per patient: 1.6) were evaluated up to 12.8 years. The frameworks of the SCs were made from Au alloys (n = 319), CoCr (n = 37), zirconia (n = 286), or lithium disilicate (n = 10). Full-coverage ceramic veneers were placed on 319 Au SCs, 34 CoCr SCs, and 92 zirconia SCs. One hundred and fifty-two monolithic zirconia SCs were not veneered. A partial veneer was placed on the buccal surface only of a further 42 zirconia SCs. - Results - A total of 26 failures were caused by loss of implants (n = 6), ceramic fractures and chipping (n = 15), loosening of the abutment (n = 4), or swallowing of a de-cemented SC (n = 1). Kaplan-Meier analysis revealed a probability of survival of 96% after five years and 92% after 10 years. A greater incidence of failure was observed for lithium disilicate and zirconia SCs than for metal-ceramic SCs (p < .05). Separate analysis of the most frequent complication, chipping (n = 61), revealed that zirconia and lithium disilicate frameworks were significant risk factors for chipping (p < 0.05). Furthermore, a significantly greater incidence of chipping was observed for SCs with full-coverage veneers than for monolithic zirconia SCs and for SCs with partial veneers (p < .05). - Conclusion - Avoidance of full-coverage veneers significantly improves the clinical performance of implant-supported crowns, primarily reduces the incidence of chipping.