Clinical performance of double crown retained dentures using conical all-ceramic primary crowns

Long-term clinical success of conical electroplated double-crown-retained dentures on implants or natural abutments up to 11.5 years: a retrospective study

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

ISRCTN

Registry ID

ISRCTN94719711

Enrollment

100

Registered

2018-11-07

Start date

2013-06-15

Completion date

Unknown

Last updated

2019-12-10

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

Conditions

Reduced dentition in upper and lower jaw Oral Health Reduced dentition in upper and lower jaw

Interventions

For data collection, the sheets of patients who received double-crown-retained dentures (DCRDs) between June 1998 and December 2013 were evaluated for failure of DCRDs, necessary repairs, pressure sou

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Dentures fabricated according to the Weigl protocol 2. Regular ttendance of follow-up exams 3. Tooth-supported DCRDs 4. Implant-supported DCRDs 5. Combined tooth/implant-supported DCRDs 6. Conical implant/abutment connections 7. Aged 18-91 years

Exclusion criteria

Exclusion criteria: Not treated according to the Weigl protocol

Design outcomes

Primary

Measure	Time frame
Failure of DCRDs (defined as the loss of the denture), evaluated by reviewing patient notes	—

Secondary

Measure	Time frame
The following were evaluated by reviewing patient notes from patients between June 2013 and December 2013: 1. Necessary repairs to dentures 2. Pressure source 3. Occlusal adjustments 4. Problems with denture removal 5. Relining needs 6. Maintenance needs related to the denture abutments	—

Countries

Germany

Outcome results

None listed

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