Interproximal Papilla Stability Around CAD/CAM and Stock Abutments in Anterior Regions: A 2-Year Prospective Multicenter Cohort Study

Int J Periodontics Restorative Dent. Sep/Oct 2017;37(5):657-665. doi: 10.11607/prd.3184.


The aim of this study was to compare the interproximal papilla stability of restorations supported by computer-aided design/computer-assisted manufacture (CAD/CAM) abutments to those supported by prefabricated stock abutments in anterior areas over a 2-year follow-up. Abutments were selected depending on implant inclination and thickness of buccal peri-implant soft tissues from the following: zirconia stock, titanium stock, zirconia CAD/CAM and titanium CAD/CAM. Differences between the height of the papilla tip were measured (REC).

Results: REC values of titanium and zirconia CAD/CAM abutments were significantly lower than those of titanium and zirconia stock. The use of titanium and zirconia CAD/CAM abutments is related to better interproximal papillae stability.

Publication types

  • Comparative Study
  • Multicenter Study

MeSH terms

  • Adult
  • Computer-Aided Design*
  • Dental Abutments* / adverse effects
  • Dental Implant-Abutment Design* / adverse effects
  • Dental Implant-Abutment Design* / methods
  • Dental Papilla / pathology*
  • Dental Prosthesis Design* / methods
  • Esthetics, Dental
  • Female
  • Humans
  • Male
  • Middle Aged
  • Prospective Studies
  • Titanium / therapeutic use
  • Zirconium / therapeutic use


  • Zirconium
  • Titanium
  • zirconium oxide