Influence of SRP With MM on the Composition and Functional Characteristics of Subgingival Microbiome Communities
- Conditions
- Periodontitis
- Interventions
- Procedure: Scaling and Root Planing (SRP)Procedure: SRP + MM
- Registration Number
- NCT05422742
- Lead Sponsor
- West Virginia University
- Brief Summary
The purpose of this study is to characterize the effect of minocycline microspheres (MM) administered as an adjunct to scaling and rooting planning (SRP) on the subgingival community composition and metatranscriptome functional profile, in comparison to a group treated with SRP only and to periodontally-healthy subjects.
- Detailed Description
Patients attending the West Virginia University School of Dentistry Clinics will be invited to participate in this study. Thirty periodontitis patients (stage II, III or IV) with ≥4 teeth with a probing pocket depth (PPD) \>4 mm; at least 1 tooth with a PPD \>6 mm and clinical attachment loss (CAL) ≥2 mm, and radiographic evidence of bone loss will be recruited.
Clinical examination will include measurement of clinical attachment loss (CAL), probing pocket depth (PPD), bleeding on probing (BOP), and plaque score (PS) at 6 sites per tooth. Furcation involvement (FI) will also be recorded. Radiographic examination will include full-mouth radiographic series. Patients will receive a clinical examination at baseline (V1, before periodontal therapy), and their subgingival plaque biofilms will be sampled at a second visit (V2) two weeks after this initial exam to collect subgingival plaque not disrupted by the examination procedures.
Subjects will be then randomized to one of two groups: SRP only and SRP + MM. Periodontal therapy will consist of one visit (V3) full-mouth SRP alone or in combination with MM placed at all sites regardless of PPD. Each site will receive 1mg of MM for a total of 6mg of MM per tooth. In this manner we will also evaluate whether MM modifies the microbiome of shallow sites, since subgingival microbiome dysbiosis affects shallow sites of subjects with periodontitis and therefore represents a risk for future disease progression.
Subjects will be evaluated 2 months after receiving periodontal therapy (V4). At this visit subgingival plaque samples will be collected and clinical outcomes evaluated. Clinical examinations and plaque collection will be conducted by one calibrated examiner.
Fifteen periodontally-healthy subjects will also be recruited from the West Virginia University School of Dentistry Clinics. Subjects will receive a clinical examination and their subgingival communities sampled at the same visit (V1).
Recruitment & Eligibility
- Status
- RECRUITING
- Sex
- All
- Target Recruitment
- 45
Not provided
Not provided
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description SRP Scaling and Root Planing (SRP) Scaling and rooting planning SRP + MM SRP + MM Scaling and rooting planning in combination with minocycline microspheres
- Primary Outcome Measures
Name Time Method Plaque Score (SRP only) Baseline to 2 months post procedure Change in O'Leary plaque score. Plaque score will be assessed dichotomously. Score 1 when plaque is identifiable using a dental probe or score 0 when no plaque is present. Following this assessment, plaque score is calculated by dividing the number of plaque containing surfaces by the total number of surfaces examined.
Change in Clinical Attachment Loss (SRP only) baseline to 2 months post procedure Change in Clinical Attachment Loss which is a routine clinical measure of periodontal health (measured in mm) from baseline to 2 months post procedure
Plaque Score (SRP + MM) Baseline to 2 months post procedure Change in O'Leary plaque score. Plaque score will be assessed dichotomously. Score 1 when plaque is identifiable using a dental probe or score 0 when no plaque is present. Following this assessment, plaque score is calculated by dividing the number of plaque containing surfaces by the total number of surfaces examined.
Change in Clinical Attachment Loss (SRP + MM) baseline to 2 months post procedure Change in Clinical Attachment Loss which is a routine clinical measure of periodontal health (measured in mm) from baseline to 2 months post procedure
Bleeding on Probing (SRP + MM) Baseline to 2 months post procedure Change in Bleeding on Probing is a measure of inflammation and determined as the percent of bleeding sites that are measured at 6 sites per tooth
Bleeding on Probing (SRP only) Baseline to 2 months post procedure Change in Bleeding on Probing is a measure of inflammation and determined as the percent of bleeding sites that are measured at 6 sites per tooth
Probing Pocket Depth (SRP only) Baseline to 2 months post procedure Change in Probing depth is a routine clinical measure of periodontal health (measured in mm)
Probing Pocket Depth (SRP + MM) Baseline to 2 months post procedure Change in Probing depth is a routine clinical measure of periodontal health (measured in mm)
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (1)
West Virginia University
🇺🇸Morgantown, West Virginia, United States