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Experimental Peri-implant Mucositis on Implant Sites That Were Previously Treated With or Without Implantoplasty

Primary Purpose

Peri-implant Mucositis, Peri-Implantitis

Status
Recruiting
Phase
Not Applicable
Locations
United States
Study Type
Interventional
Intervention
Induction of experimental peri-implant mucositis
Resolution of experimental peri-implant mucositis
Sponsored by
University of Pittsburgh
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional prevention trial for Peri-implant Mucositis focused on measuring Implantoplasty, Marginal bone level, Probing depth, Bleeding on probing

Eligibility Criteria

18 Years - 80 Years (Adult, Older Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria: Aged 18-80 years In good general health, (at least ASA 2) Previously treated implants must have probing depths (PD) ≤ 4 mm Previously treated implants must have <50% bone loss around the implant of interest (assessed radiographically) Patients must have been treated previously for peri-implantitis with or without IP, with at least 1 thread or 2 mm of implant surface exposed in the oral cavity. Have little to no bacteria on the implant(s) of interest (modified Plaque Index of <1) by Day 0 Have healthy gums that do not bleed around the implant(s) of choice (modified Gingival index <1) by Day 0 Have evidence of stable bone levels around the treated implant for > 6 months Exclusion Criteria: Active infectious diseases of any kind. Medical conditions which require premedication prior to dental treatments/visits. Pregnant women or planning to become pregnant (self-reported). Patients with congenital or metabolic bone disorders (ie. osteoporosis, vitamin D deficiency, parathyroid disease, etc.) Current heavy smokers: Subjects who have smoked more than 1 pack/day within 6 months of study onset (self-reported) Subjects with co-morbid conditions (i.e., uncontrolled diabetes, cardiovascular disease, impaired kidney function, heart murmur, rheumatic fever, bleeding disorder, hepatitis, tuberculosis, HIV) that would affect the study outcome or interpretation of study results will be excluded. Concomitant medications: Subjects on significant concomitant drug therapy for systemic conditions (i.e., Chronic anti-inflammatory medication, antibiotics, anticoagulants, any medication initiated <3 months prior to the screening visit) will not be included in the study. Occasional short-term use (7-14 days) of analgesics or common cold medication is permitted. Such use of these medications will be reviewed and recorded by the Investigator.

Sites / Locations

  • University of Pittsburgh School of Dental MedicineRecruiting

Arms of the Study

Arm 1

Arm Type

Experimental

Arm Label

Implants with history of peri-implantitis

Arm Description

Implant(s) treated previously for peri-implantitis with or without exposed polished surface, no PD > 4 mm and < 50% bone loss.

Outcomes

Primary Outcome Measures

Changes in the modified Gingival Index (mGI) between 21 and 42 days
The mGI will be assessed according to the following criteria: Score 0 - No bleeding on probing; Score 1 - Bleeding dot; Score 2 - Continuous line of blood that fills the sulcus; Score 3 - Profuse bleeding and/or hemorrhage drip. Changes in the scores between day 21 and day 42 will be determined, being 0 minimum and 3 maximum. The mGI will be assessed weekly.

Secondary Outcome Measures

modified Plaque Index (mPI)
The mPI will be assessed according to the following criteria: Score 0 - No visible plaque; Score 1 - Plaque only recognized by running a probe across the marginal surface; Score 2 - Plaque can be seen by the naked eye; Score 3 - Abundance of soft matter The mPI will be assessed weekly, being 0 minimum and 3 maximum.
Changes in probing depth (PD)
PD will be accessed weekly. Increase in PD must exceed a threshold of 0.8mm to be considered progression of the disease.
Marginal bone loss (MBL)
Measured by overlaying the baseline and final radiographs and measuring the change in marginal bone levels. Progression will have to exceed a threshold of 0.5mm to be considered.
Peri-implant crevicular fluid (PICF) immunologic profile
PICF will be collected from the same sites weekly with the aid of paper strips. Cytokines will be detected using a panel of relevant cytokines using a bead based multiplex immunoassay to determine the immunological profile of the lesions during induction and resolution of peri-implant mucositis.
Microbiological profile of the biofilm analysis
Plaque samples will be collected weekly and qualitative/quantitatively evaluated by 16S rRNA sequencing for composition profiling during the induction and resolution of peri-implant mucositis.

Full Information

First Posted
September 6, 2023
Last Updated
September 25, 2023
Sponsor
University of Pittsburgh
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1. Study Identification

Unique Protocol Identification Number
NCT06063876
Brief Title
Experimental Peri-implant Mucositis on Implant Sites That Were Previously Treated With or Without Implantoplasty
Official Title
Progression and Resolution of Experimental Peri-implant Mucositis on Now Healthy Implant Sites That Were Previously Treated With or Without Implantoplasty: A Controlled Clinical Trial
Study Type
Interventional

2. Study Status

Record Verification Date
September 2023
Overall Recruitment Status
Recruiting
Study Start Date
September 5, 2023 (Actual)
Primary Completion Date
October 2024 (Anticipated)
Study Completion Date
December 2025 (Anticipated)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
University of Pittsburgh

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
This controlled clinical trial will assess clinically, immunologically, and microbiologically the healing of experimental peri-implant mucositis (PIM) lesions in implants treated previously with implantoplasty (IP) compared to those treated without IP.
Detailed Description
The present parallel controlled clinical trial is designed as a 21-day experimental peri-implant mucositis, followed by a period of resolution of 21 days in healthy implants that were previously treated for peri-implantitis with and without implantoplasty. A total of 8 appointments over the course of about 42 days will be necessary. These appointments will take place in the Department of Periodontics & Preventive Dentistry and are described as follows: Screening Appointment (14 days prior to Day 0): During this visit, informed consent will be obtained from each subject and inclusion criteria for participation in the study will be reviewed. Participants will undergo the following activities: Review of medical, dental history and medications Periodontal chart Intraoral photographs Periapical radiograph of the dental implant that was previously treated with or without implantoplasty to confirm if the implant is in healthy condition with no progressive bone loss A digital impression (intraoral scan) of the teeth will be taken for fabrication of a customized stent (a plastic cover). The participant will be instructed to place the stent over the implant whenever performing oral care measures (brushing/flossing/mouthrinse) at home for 21 days. The authors will teach the individuals on how to use this stent and how to brush the teeth/implant(s) during the study. The stent will be provided at the next research visit. A professional prophylaxis (dental cleaning) of all tooth and implant surfaces. V2 - V5 (from day 0 to day 21), the experimentally induced peri-implant mucositis phase, the participant will be wearing the stent over the implant area during their routine oral health care. The following research activities will occur: Review any changes to medical or dental history and any new medications Intraoral photographs Clinical assessment Peri-implant crevicular fluid sample collection from the deepest pocket around the implant using paper points. Biofilm sample collection using sterile curettes (titanium or plastic) at the same sites. At V5 (day 21), the participants will receive a dental cleaning, polishing, and review of their oral hygiene home care techniques. Then, they will be asked to reinstitute their oral hygiene home care procedures. At V6 - V8 (from day 28 to day 42), the resolution of induced peri-implant mucositis phase, the following research activities will occur: Review any changes to medical or dental history and any new medications Intraoral photographs Clinical assessment Peri-implant crevicular fluid sample collection from the deepest pocket around the implant using paper points. Biofilm sample collection using sterile curettes (titanium or plastic) at the same sites. At V8 (day 42), a new periapical radiograph will be acquired. If there is still any evidence of inflammation around the implant, we will continue to monitor/treat the inflammation every 3-4 weeks until it is resolved. PERI-IMPLANT CREVICULAR FLUID (PICF) SAMPLING AND ANALYSIS: PICF samples will be collected weekly. The site with the deepest pocket of each implant will be sampled using sterile Periopapers with colored bands (29 mm, ISO 25, taper .02; VDW, Munich, Germany). At each visit following screening (V2-V8), the samples will be taken from the same site. The PICF volume will be measured with a calibrated, electronic gingival fluid measuring device (Periotron 8000, Oraflow, Plainview, NY, USA). Cytokines will be detected using a panel of relevant cytokines using a bead based multiplex immunoassay (Bio-Plex Pro Human Cytokine 27-plex Assay). SUBMUCOSAL PLAQUE SAMPLING AND DNA EXTRACTION Sterile curettes (titanium or plastic) will be used to collect plaque samples from the deepest pocket around each implant. DNA will be extracted using DNeasy Blood and Tissue Kit (Qiagen). Genomic DNA samples will be profiled with 16S Amplicon Sequencing Service. Microbial composition will be profiled with Centrifuge using bacterial, viral, fungal, and human genome datasets.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Peri-implant Mucositis, Peri-Implantitis
Keywords
Implantoplasty, Marginal bone level, Probing depth, Bleeding on probing

7. Study Design

Primary Purpose
Prevention
Study Phase
Not Applicable
Interventional Study Model
Single Group Assignment
Masking
None (Open Label)
Allocation
N/A
Enrollment
30 (Anticipated)

8. Arms, Groups, and Interventions

Arm Title
Implants with history of peri-implantitis
Arm Type
Experimental
Arm Description
Implant(s) treated previously for peri-implantitis with or without exposed polished surface, no PD > 4 mm and < 50% bone loss.
Intervention Type
Procedure
Intervention Name(s)
Induction of experimental peri-implant mucositis
Intervention Description
Patients will refrain from oral hygiene measures at the implant sites for 3 weeks to induce peri-implant mucositis, by using a stent in the included implant during oral hygiene.
Intervention Type
Procedure
Intervention Name(s)
Resolution of experimental peri-implant mucositis
Intervention Description
Patients will reinstitute oral hygiene measures, receive an oral prophylaxis and oral hygiene instructions and will be evaluated during 3 weeks.
Primary Outcome Measure Information:
Title
Changes in the modified Gingival Index (mGI) between 21 and 42 days
Description
The mGI will be assessed according to the following criteria: Score 0 - No bleeding on probing; Score 1 - Bleeding dot; Score 2 - Continuous line of blood that fills the sulcus; Score 3 - Profuse bleeding and/or hemorrhage drip. Changes in the scores between day 21 and day 42 will be determined, being 0 minimum and 3 maximum. The mGI will be assessed weekly.
Time Frame
At 21 and 42 days
Secondary Outcome Measure Information:
Title
modified Plaque Index (mPI)
Description
The mPI will be assessed according to the following criteria: Score 0 - No visible plaque; Score 1 - Plaque only recognized by running a probe across the marginal surface; Score 2 - Plaque can be seen by the naked eye; Score 3 - Abundance of soft matter The mPI will be assessed weekly, being 0 minimum and 3 maximum.
Time Frame
Up to 42 days
Title
Changes in probing depth (PD)
Description
PD will be accessed weekly. Increase in PD must exceed a threshold of 0.8mm to be considered progression of the disease.
Time Frame
Up to 42 days
Title
Marginal bone loss (MBL)
Description
Measured by overlaying the baseline and final radiographs and measuring the change in marginal bone levels. Progression will have to exceed a threshold of 0.5mm to be considered.
Time Frame
From baseline to 42 days
Title
Peri-implant crevicular fluid (PICF) immunologic profile
Description
PICF will be collected from the same sites weekly with the aid of paper strips. Cytokines will be detected using a panel of relevant cytokines using a bead based multiplex immunoassay to determine the immunological profile of the lesions during induction and resolution of peri-implant mucositis.
Time Frame
Up to 42 days
Title
Microbiological profile of the biofilm analysis
Description
Plaque samples will be collected weekly and qualitative/quantitatively evaluated by 16S rRNA sequencing for composition profiling during the induction and resolution of peri-implant mucositis.
Time Frame
Up to 42 days

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
80 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria: Aged 18-80 years In good general health, (at least ASA 2) Previously treated implants must have probing depths (PD) ≤ 4 mm Previously treated implants must have <50% bone loss around the implant of interest (assessed radiographically) Patients must have been treated previously for peri-implantitis with or without IP, with at least 1 thread or 2 mm of implant surface exposed in the oral cavity. Have little to no bacteria on the implant(s) of interest (modified Plaque Index of <1) by Day 0 Have healthy gums that do not bleed around the implant(s) of choice (modified Gingival index <1) by Day 0 Have evidence of stable bone levels around the treated implant for > 6 months Exclusion Criteria: Active infectious diseases of any kind. Medical conditions which require premedication prior to dental treatments/visits. Pregnant women or planning to become pregnant (self-reported). Patients with congenital or metabolic bone disorders (ie. osteoporosis, vitamin D deficiency, parathyroid disease, etc.) Current heavy smokers: Subjects who have smoked more than 1 pack/day within 6 months of study onset (self-reported) Subjects with co-morbid conditions (i.e., uncontrolled diabetes, cardiovascular disease, impaired kidney function, heart murmur, rheumatic fever, bleeding disorder, hepatitis, tuberculosis, HIV) that would affect the study outcome or interpretation of study results will be excluded. Concomitant medications: Subjects on significant concomitant drug therapy for systemic conditions (i.e., Chronic anti-inflammatory medication, antibiotics, anticoagulants, any medication initiated <3 months prior to the screening visit) will not be included in the study. Occasional short-term use (7-14 days) of analgesics or common cold medication is permitted. Such use of these medications will be reviewed and recorded by the Investigator.
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Andrea Ravida, DDS, MS, PhD
Phone
7347309678
Email
andrearavida@pitt.edu
First Name & Middle Initial & Last Name or Official Title & Degree
Carla Sanchez, MS
Phone
4126241179
Email
cab28@pitt.edu
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Andrea Ravida
Organizational Affiliation
University of Pittsburgh
Official's Role
Principal Investigator
Facility Information:
Facility Name
University of Pittsburgh School of Dental Medicine
City
Pittsburgh
State/Province
Pennsylvania
ZIP/Postal Code
15213
Country
United States
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Andrea Ravida, DDS, MS, PhD

12. IPD Sharing Statement

Plan to Share IPD
No

Learn more about this trial

Experimental Peri-implant Mucositis on Implant Sites That Were Previously Treated With or Without Implantoplasty

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