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Longevity of dental restorations: A multicenter study

Longevity of dental restorations: A multicenter study - Longevity of dental restorations: A multicenter study

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000047395
Enrollment
750
Registered
2022-04-06
Start date
2022-03-22
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

dental caries, missing tooth

Interventions

None listed

Sponsors

Nagasaki University Hospital
Lead Sponsor
Maruyama Dental Clinic, Hayama Dental Clinic, Ooi Dental Office, Nanba Dental Clinic, Horisaka Dental Clinic, Yamamoto Dental Clinic
Collaborator

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1.Patients must have visited each dental clinic during the study recruitment period and at least 10 years must have passed since the date of their first visit at that time. 2.The patient must have received restorative or prosthetic crown treatment at the respective dentist's practice. 3.The participant's informed consent must have been obtained verbally.

Exclusion criteria

Exclusion criteria: 1.Participants must not have been a patient for more than 10 years after the initial visit. 2.minor 3.Patients with no history of restorative treatment at the collaborating institution 4.Record only the first treatment case by treatment method and exclude the second and subsequent cases.

Design outcomes

Primary

MeasureTime frame
Event occurrence. An event in this study refers to the need for re-treatment (including replacement, repair and extraction) due to caries, fracture, or dislodgement.

Countries

Japan

Contacts

Public ContactShisei Kubo

Nagasaki University School of Dentistry Department of Prosthetic Dentistry

kuboshisei@gmail.com095-819-7677

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026