NCT01229995.

Trial name or title	'A comparison of zirconia CAD/CAM and conventionally fabricated single implant abutments and restorations in the aesthetic zone: a randomized controlled clinical trial'
Methods	Randomised, parallel‐group study
Participants	30 adult patients in need of replacing 1 missing tooth in the aesthetic area
Interventions	Group 1: implant‐supported single crowns made with CAD/CAM 'Etkon' technology (zirconia abutment and ceramic crown) Group 2: implant‐supported single crowns made with conventional technique (crossfit titanium abutment and a ceramometal crown)
Outcomes	Failure, chipping, periodontal/peri‐implant measurements, aesthetic evaluation through pink aesthetic score (PES) and white aesthetic score (WES), VAS questionnaire for aesthetics assessed by patient
Starting date	May 2009
Contact information
Notes