Intaglio Surface of Full-arch Implant Supported Prosthesis

NCT ID: NCT06636097

Last Updated: 2025-10-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ENROLLING_BY_INVITATION

Total Enrollment

50 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-06-11

Study Completion Date

2027-12-31

Brief Summary

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The purpose of the study is to determine if there is an association between the intaglio shape of full-arch implant-supported prosthesis and marginal bone level around implants. The intaglio shape can be present as concave or convex and, depending on that, it can lead to more plaque accumulation on the fitting surface of the prosthesis.

Null Hypothesis (H0): Full-arch implant supported prosthesis with an increased depth of the intaglio shape demonstrate similar marginal bone levels as prosthesis with a reduced depth of the intaglio surface.

Alternative Hypothesis (H1): Full-arch implant supported prosthesis with an increased depth of the intaglio shape demonstrate increased/reduced marginal bone levels compared to prosthesis with a reduced depth of the intaglio surface.

Detailed Description

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The investigators will review dental records from the university and call eligible individuals for an appointment. During the research visit, the investigators will take new x-rays for marginal bone level assessment and a digital scan of the prosthesis to assess the shape of the intaglio. Also, remove the prosthesis, perform clinical measurements and collect plaque samples from the prosthesis and the implant sulcus. then, implants and prosthesis will be cleaned and placed in position.

The study will have only one appointment where every measurement will be assessed in this visit.

Conditions

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Peri-Implantitis

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Patients Rehabilitated with full-arch implant-supported prosthesis

All patients that are rehabilitated with full-arch implant-supported prosthesis

Full arch

Intervention Type DEVICE

design

Interventions

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Full arch

design

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* ≥ 18 years old;
* Rehabilitated with a full-arch screw-retained supported prosthesis in the maxilla, in function for at least 1 year;
* Good overall health (ASA I or ASA II).

Exclusion Criteria

* Individuals with motricity problems who cannot clean the prosthesis;
* Patients treated or maintained in centers outside the University of Pittsburgh;
* Incomplete dental records;
* Misfit at the prosthesis-implant interface;
* Cemented prosthesis;
* Individuals rehabilitated with over dentures;
* Individuals with uncontrolled chronic diseases or immunocompromised;
* Pregnant Patients.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Pittsburgh

OTHER

Sponsor Role lead

Responsible Party

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Andrea Ravida

Assistant Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Andrea Ravida, DDS, MS, PhD

Role: PRINCIPAL_INVESTIGATOR

Program Director of the Periodontics and Implant Dentistry Department

Locations

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University of Pittsburgh, School of Dental Medicine

Pittsburgh, Pennsylvania, United States

Site Status

Countries

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United States

References

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Mombelli A, van Oosten MA, Schurch E Jr, Land NP. The microbiota associated with successful or failing osseointegrated titanium implants. Oral Microbiol Immunol. 1987 Dec;2(4):145-51. doi: 10.1111/j.1399-302x.1987.tb00298.x. No abstract available.

Reference Type RESULT
PMID: 3507627 (View on PubMed)

Araujo MG, Lindhe J. Peri-implant health. J Periodontol. 2018 Jun;89 Suppl 1:S249-S256. doi: 10.1002/JPER.16-0424.

Reference Type RESULT
PMID: 29926949 (View on PubMed)

Other Identifiers

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STUDY23100028

Identifier Type: -

Identifier Source: org_study_id

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