Long-term performance and survival rate of press veneered zirconia and monolithic CAD/CAM lithium disilicate crowns: A prospective randomized clinical splitmouth study over 5 years

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00000240

Enrollment

Registered

2009-10-27

Start date

2009-11-15

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

fracture of the restoration, secondary caries K02.9

Interventions

Group 1: Long-term performance (probe mirror photos) according to USPHS criteria of crown placement of molar teeth in the controlgroup IPS e.max CAD Group 2: Long-term performance (probe mirror ph

Eligibility

Sex/Gender

All

Age

18 Years to 70 Years

Inclusion criteria

Inclusion criteria: Two comparable, teeth (molars) in need of a crown restoration, good oral hygiene, healthy periodontal condition, healthy endodontical condition

Exclusion criteria

Exclusion criteria: Teeth are not in need of a crown restoration

Design outcomes

Primary

Measure	Time frame
primary: Survival time of all-ceramic crowns using two all-ceramic systems (taking ointo account technical, biological failures, necessitating a renewal of the restauration)	—

Countries

Germany

Contacts

Public ContactPetra Güß

Universitätsklinikum Freiburg Klinik für Zahn-, Mund- und Kieferheilkunde Abteilung für Zahnärztliche Prothetik

petra.guess@uniklinik-freiburg.de0761 270 4843

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026