Risk factors of post restorations: A prospective observational practice-based clinical study

Risk factors of post restorations: A prospective observational practice-based clinical study - AZT-post

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00014958

Enrollment

400

Registered

2019-04-29

Start date

2019-08-01

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

Interventions

Group 1: Eight general dental practitioners will each place up to 50 posts in endodontically treated teeth. Selected clinical information at placement and all recall visits will be recorded. For this,

Eligibility

Sex/Gender

All

Age

18 Years to 99 Years

Inclusion criteria

Inclusion criteria: Patients with a need of restoration of at least one endodontically treated tooth will be invited and screened. Inclusion criteria will be as followed: 1. need of root canal treatment and post-supported restoration 2. symptom-free tooth with adequate root canal filling 3. incisisor, canines and premolars 4. one tooth per patient. In cases were more than one post restoration will be registered the first one will be included in the study 5. maximum of 50 patients per dentist 6. final restoration prepared with a ferrule design

Exclusion criteria

Exclusion criteria: none

Design outcomes

Primary

Measure	Time frame
The observation period starts with the date when the post is inserted. Whenever the post will be ‘recemented’, renewed, or the tooth will be extracted the intervention will be considered as failed. When the post will still be in function at the last check-up visit and will found to be clinically acceptable, the intervention will be considered successful. During the regular check-ups, the posts are monitored. No restriction in respect to the last check-up is given.	—

Measure

Time frame

The observation period starts with the date when the post is inserted. Whenever the post will be ‘recemented’, renewed, or the tooth will be extracted the intervention will be considered as failed. When the post will still be in function at the last check-up visit and will found to be clinically acceptable, the intervention will be considered successful. During the regular check-ups, the posts are monitored. No restriction in respect to the last check-up is given.

—

Secondary

Measure	Time frame
The observation period starts with the date when the post is inserted. Whenever the post will be renewed, or the tooth will be extracted the intervention will be considered as failed. If a post can be recemented after loss of retention without renewal of the restoration the observation period will not be considered as censored or failed. When the post is still in function at the last check-up visit and is found to be clinically acceptable, the intervention will be considered as a ‘survival’.	—

Measure

Time frame

The observation period starts with the date when the post is inserted. Whenever the post will be renewed, or the tooth will be extracted the intervention will be considered as failed. If a post can be recemented after loss of retention without renewal of the restoration the observation period will not be considered as censored or failed. When the post is still in function at the last check-up visit and is found to be clinically acceptable, the intervention will be considered as a ‘survival’.

—

Countries

Germany

Contacts

Public ContactRichard Wierichs

Klinik für Zahnerhaltung, Parodontologie und Präventive Zahnheilkunde, Universitätsklinikum der RWTH Aachen

rwierichs@ukaachen.de0241 80-88110

Outcome results

None listed

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