15-year results of a randomized split-mouth clinical trial of ceramic partial crowns cemented with self-adhesive luting cement with or without selective enamel etching

15-year results of a randomized split-mouth clinical trial of ceramic partial crowns cemented with self-adhesive luting cement with or without selective enamel etching - PCCs RXU enamel etching 15 years

Status

Active, not recruiting

Phases

Phase 4

Study type

Interventional

Source

DRKS

Registry ID

DRKS00032759

Enrollment

Registered

2023-10-04

Start date

2021-10-01

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

K02.9

Interventions

Group 1: Ceramic partial crowns cemented with RelyX Unicem without selective enamel etching Group 2: Ceramic partial crowns cemented with RelyX Unicem with selective enamel etching

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: The patients were recruited from the patient pool of the Department of Operative Dentistry and Periodontology of the University of Regensburg. They were included in the study if They were suffering from at least two large defects of the dental hard tissues suitable for the restoration with partial ceramic crowns. No initial carious lesions were treated. All defects were formerly insufficient amalgam or composite restorations. The teeth to be restored did not reveal any symptoms of pain. The application of rubber dam for the insertion of the restorations was possible. Tooth mobility was lower than or equal to degree 1 (mobility of the tooth is discernible but not visible) Additionally, all patients participating in the study exhibited a moderate level of oral hygiene represented by a papillary bleeding index (PBI) <35% All patients were generally healthy and had no known allergies to the materials used.

Exclusion criteria

Exclusion criteria: All issues contradicting the "additional inclusion criteria".

Design outcomes

Primary

Measure	Time frame
Kaplan Meier Survival	—

Secondary

Measure	Time frame
Clinical success evaluated with FDI and modified USPHS criteria	—

Countries

Germany

Contacts

Public ContactKonstantin Scholz

Poliklinik für Zahnerhaltung und Parodontologie, Universitätsklinikum Regensburg

Konstantin.Scholz@ukr.de+499419446024

Outcome results

None listed

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