A Randomized Clinical Trial Comparing Zirconia and Metal‐Ceramic Three‐Unit Posterior Fixed Partial Dentures: A 5‐Year Follow‐Up

Abstract

Zirconia FPDs exhibited the same survival rate (100%) as MC FPDs after 5 years; however, the success rate was 80%, because an increased rate of chipping was observed in zirconia restorations.

Periodontal Behavior Around Teeth Prepared with Finishing Line for Restoration with Fixed Prostheses. A Systematic Review and Meta-Analysis

“…Lastly, the parameter that most clearly pointed to periodontal disorders was gingival margin migration as reported in studies such as those by Peláez or Valderhaug [2,5,11]. Gingival migration is due partly to individual patient factors such as oral hygiene or periodontal treatment carried out prior to treatment [2,5,8,11,12,20]. According to various authors, the main reason for increased gingival bleeding and periodontal inflammation is poor marginal adaptation between the restoration and the prepared tooth [8,11,12,20,24].…”

“…Most research and meta-analyses of published literature have focused on the prostheses' mechanical complications, for example chipping, and have placed periodontal complications in the background. [10][11][12][17][18][19][20][21][22][23][24][25][26][27]. Only a few works have investigated gingival and periodontal health around crowns and FDPs exclusively [2,5,7,8,20,22].…”

“…As for periodontal probing depth, several articles reported significantly greater depth observed around restored teeth than untreated control teeth [18][19][20]. Suárez and Sax found greater insertion loss in teeth prepared with horizontal finishing line than untreated teeth [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. Lastly, the parameter that most clearly pointed to periodontal disorders was gingival margin migration as reported in studies such as those by Peláez or Valderhaug [2,5,11].…”

“…Over the years, numerous clinical trials have analyzed the mechanical behavior of tooth supported fixed prostheses, but few have investigated the periodontal responses around them [2,[7][8][9][10][11][12]. In this context, the aim of this systematic review and meta-analysis was to analyze the periodontal behavior around teeth prepared with horizontal finishing lines supporting metal-ceramic and zirconia complete coverage crowns and fixed partial dentures (FDPs).…”

In Vitro Evaluation of Bond Strength between Zirconia Core and CAD/CAM‐Produced Veneers

“…Although zirconia‐based restorations have superior mechanical and esthetic properties, they are also associated with some clinical complications . Chipping of veneering porcelain is the most frequent reason for failure of zirconia‐based restorations .…”