Periodontal outcome and additional clinical quality criteria of lithium-disilicate restorations (Empress 2) after 14years

Teichmann, Maren; Goeckler, Fabian; Rueckbeil, Marcia; Weber, Volker; Edelhoff, Daniel und Wolfart, Stefan (2019): Periodontal outcome and additional clinical quality criteria of lithium-disilicate restorations (Empress 2) after 14years. In: Clinical Oral Investigations, Bd. 23, Nr. 5: S. 2153-2164

Abstract

ObjectivesTo evaluate the clinical quality of tooth-supported crowns (SCs), implant-supported crowns (ISCs), and fixed dental prosthesis (FDPs) made of a lithium-disilicate glass-ceramic framework material (IPS Empress 2, Ivoclar Vivadent) after long-term use.Materials and methodsBetween 1997 and 1999, 184 restorations (106 SCs, 32 ISCs, 33 FDPs, 13 diverse restorations) were placed in 73 patients. In 2012/2013, all patients with functioning restorations were invited to participate in a clinical follow-up examination. To investigate the clinical quality, modified California Dental Association (CDA) criteria, periodontal health, and the patient's opinion were evaluated.ResultsAfter 14years on average, 50 restorations were available for evaluation of the CDA criteria and the patient's opinion, and 24 restorations were available for the periodontal health evaluation. Surface, color, anatomic shape, and margin integrity were considered to be in the range of excellence in 54, 78, 96, and 88%, respectively. There were no unacceptable defects. Most patients (64%) were still entirely satisfied with their restorations. Mean probing depths were significantly higher on teeth with tooth-supported Empress 2 restorations than on control teeth (p=0.0401). No significant relationship was found between surface quality and plaque accumulation (p=0.9450, generalized linear mixed model) or between surface quality and periodontal probing 4mm (p=0.4184, generalized linear mixed model).ConclusionsThe clinical quality of the Empress 2 restorations that had survived 14years on average was totally satisfactory with regard to esthetics, design, and patient's opinion. The periodontal health of all-ceramic restored teeth requires further investigation.Clinical significanceThe practitioner's choice of dental materials is based, at best, on long-term experience. With diminishing concerns about the clinical longevity of all-ceramic restorations, the grading of clinical quality based on esthetics, design, periodontal response, and patients' opinions could, nowadays, serve as a measure for the efficiency of dental ceramic.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Medizin
• Themengebiete: 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit
• ISSN: 1432-6981
• Sprache: Englisch