In Vivo Biofilm Accumulation on Implants With 3 Different Surfaces

March 22, 2024 updated by: Andreas Stavropoulos, Malmö University

A frequent sequela of peri-implantitis itself, but also of its surgery, is the exposure of the implant surface to the oral environment. This moderately-rough surface with threads, when exposed to the oral environment, is difficult to clean. Therefore, in cases where the implant surface is expected to remain exposed or to be in direct contact with the peri-implant mucosa, implantoplasty has been proposed to obtain a smoother surface. A smoother surface should allow more efficient plaque control. This in vivo study aims to evaluate potential differences in terms of plaque accumulation between 3 different implant surfaces.

Ten participants will wear the removable splint carrying 2 implants of each type of surface (i.e., turned, modified, and modified treated with implantoplasty) for 3 days and they will be asked to remove it to perform their (usual) oral hygiene and immerse the device in cold-tap water. On day 3, the removable splint will be collected for analysis. The area of biofilm covering the implants will be quantified with different methods.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

The aim of this in vivo study is to evaluate potential differences in terms of plaque accumulation among 3 different implant surfaces (i.e., turned, modified, and modified treated with implantoplasty).

Splint fabrication At the first visit, a maxillary alginate impression and a gypsum cast will be produced for every participant. This cast will be used to build a removable vacuum splint, which in turn will allow to carry six implants during the study period (i.e., 2 implants of each group T, M, I). Both on the right- and left-buccal aspects of the cast, three implants (i.e., 1 implant of each group T, M, I) will be randomly allocated and secured in their position prior to making the vacuum splint. The splint will be individually trimmed and polished to provide both retention and comfort.

At the second visit, splints will be tried and, if necessary, adjusted to avoid any discomfort. Participants will be instructed in detail on how to wear and handle the splint.

At the third visit, splints will be collected and stored for analyses.

Sample size calculation The only previous study with a similar study design (Azzola et al., 2020) included only a single participant. Based on the presented data of this specific study and due to the large difference between the test and control group, a reasonable sample size calculation was not feasible. Thus, a sample size of 10 participants was arbitrarily chosen for the present study.

Ethical Considerations All splints will be individually adapted, and implants will be fixated on the buccal aspect to avoid any interference while speaking. Also, mucosal and gingival irritation will be avoided by polishing the splints on the edges and keeping a distance from the gingival margin. Further, as participants will be instructed to remove the splint to brush and floss their teeth on a regular basis, there will be no increased risk of caries or gingivitis due to biofilm accumulation during the 3-day study period.

Study Type

Observational

Enrollment (Estimated)

10

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Participants recruited at the Faculty of Odontology of Malmö University after informed consent is obtained

Description

Inclusion Criteria:

  • adults, > 18 years old
  • systemically healthy
  • full mouth healthy periodontal conditions

Exclusion Criteria

  • current pregnancy or breastfeeding
  • heavy smokers (> 10 cigarettes per day)
  • antibiotic intake in the previous 3 months
  • orthodontic appliances in the upper jaw
  • removable prosthesis in the upper jaw
  • extensive implant-supported restorations in the upper jaw
  • active carious lesions

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
quantification of the biofilm
Time Frame: 3 days
Quantification with crystal violet biofilm quantification assay
3 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Malmö University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 1, 2023

Primary Completion (Estimated)

July 31, 2024

Study Completion (Estimated)

December 1, 2024

Study Registration Dates

First Submitted

September 15, 2023

First Submitted That Met QC Criteria

September 20, 2023

First Posted (Actual)

September 21, 2023

Study Record Updates

Last Update Posted (Actual)

March 26, 2024

Last Update Submitted That Met QC Criteria

March 22, 2024

Last Verified

March 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 1

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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