Metal-free materials for fixed prosthodontic restorations

Abstract

M etal-free materials compared with metal-ceramic or other conventional all-metal materials for prosthodontic restorations Patient or population: adults (18 years of age or older) with prosthodontic restorations Settings: prim ary or secondary care Intervention: m etal-f ree m aterials Comparison: m etal-ceram ic or other conventional all-m etal m aterials This review is m ade up alm ost entirely of single-study com parisons of very sm all studies. For each com parison, the evidence f or the prim ary outcom es 'f ailure of the prosthesis', 'com plications' and 'aesthetic evaluation' at all tim es of assessm ent was rated as being very low quality. All bodies of evidence were downgraded by 1 level f or risk of bias and by 2 levels f or im precision (due to single-study com parisons with either very sm all sam ple sizes, low event rates, 95% CIs including the possibility of benef it f or both the test and control groups, or com binations of these problem s) This review has included studies assessing the f ollowing com parisons 1) M etal-f ree single crowns com pared to conventional crowns 2) M etal-f ree FDPs com pared to m etal-ceram ic FDPs 3) M etal-f ree cantilevered FDPs com pared to m etal-ceram ic cantilevered FDPs 4) M etal-f ree im plant-supported single crowns com pared to m etal-ceram ic im plant-supported single crowns 5) M etal-f ree abutm ents com pared to m etal abutm ents supporting single crowns 6) M etal-f ree im plant-supported FDPs m ade of dif f erent m aterials 7) M etal-f ree tooth-supported FDPs m ade of dif f erent m aterials CI: conf idence interval; FDPs: f ixed dental prostheses. GRADE Working Group grades of evidence High quality: f urther research is very unlikely to change our conf idence in the estim ate of ef f ect M oderate quality: f urther research is likely to have an im portant im pact on our conf idence in the estim ate of ef f ect and m ay change the estim ate Low quality: f urther research is very likely to have an im portant im pact on our conf idence in the estim ate of ef f ect and is likely to change the estim ate Very low quality: we are very uncertain about the estim ate B A C K G R O U N D Description of the condition Missing or severely damaged teeth may result in a functional and aesthetic deficit and have traditionally been replaced with fixed prosthodontic treatment (crowns or bridges). 4 Metal-free materials for fixed prosthodontic restorations (Review)

Clinical Performance of Partial and Full-Coverage Fixed Dental Restorations Fabricated from Hybrid Polymer and Ceramic CAD/CAM Materials: A Systematic Review and Meta-Analysis

“…Therefore, caries can be diagnosed more easily in partial crowns compared to full crowns and could explain the results obtained in this study. The biologic complications for full crowns were lower in metal-ceramic restorations than in full ceramic reconstructions [16,57].…”

Current status on lithium disilicate and zirconia: a narrative review

“…From a clinical point of view, in the last decades zirconia has more and more gained ground in the realm of metal-free, mainly utilized to restore both natural teeth and osseointegrated implants with SCs and short-and medium-span FDPs up to 5 elements [134,145,146,148,149,164,165]. As regards FDPs, besides the high mechanical properties of the material, fracture resistance and clinical performance are also strongly related to a proper framework architecture.…”

Assessing the cutting efficiency of different burs on zirconia substrate

“…Porcelain-fused-to-metal crown restorations have been used to great success with reported clinical performance of 15 years (6). However, aesthetic demands and advances in material sciences (e.g.…”