Purpose

Periodontal Disease (PD) is present in 60+% of adults >65 years and is associated with tobacco smoking, diabetes, and atherosclerosis that worsen inflammation, comorbidities common in older people with mild to moderate cognitive impairment (MCI). Older MCI patients are prone to poor oral hygiene and dental health, which if untreated worsens inflammation-mediated brain and nervous system function, and accelerates progression to dementia. Asymptomatic carotid artery stenosis (ACAS) is often a silent disease detected in only ~10% of older adults, and may have a strong association with MCI. This study examines the effects of intensive therapy for periodontitis on cognition in high-risk older people with ACAS. Results could highlight PD as a readily modifiable risk factor for dementia.

Conditions

Eligibility

Eligible Ages
Between 60 Years and 100 Years
Eligible Genders
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Mild to moderate periodontitis
  • Mild to moderate cognitive impairment on Montreal Cognitive Assessment (MoCA) -range 17-24
  • Carotid artery stenosis <70% and >49% as diagnosed by doppler ultrasound.
  • Able to perform prescribed dental hygiene and travel to medical center as required to participate in study.

Exclusion Criteria

  • Inability to provide informed consent due to cognitive impairment
  • Subjects with inability to perform cognitive and other research testing, including FDG-PET due to renal disease (estimated glomerular filtration rate <30 mL/min/1.75m2), receiving anticoagulant therapy or with a bleeding disorder, or other disease that may interfere with dental therapy, the evaluation of outcomes or reduce the likelihood of a 12-month follow-up
  • Prior stroke or history of depression or psychiatric disease that would affect cognitive testing and compliance.
  • Subjects requiring chronic treatment with systemic corticosteroids, cyclosporine or other systemic immunosuppressive drugs, anticoagulants or drugs that would affect dental treatments in the protocol are excluded.
  • Subjects requiring essential dental care (e.g., treatment for grossly decayed teeth, broken teeth, dental abscesses, peri-apical infections, other dental infections) .
  • Do not have periodontitis, cognitive impairment or carotid artery stenosis that meet the inclusion criteria.

Study Design

Phase
N/A
Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel Assignment
Intervention Model Description
This study will randomize 60 subjects ≥65 years old with asymptomatic carotid artery stenosis (ACAS), mild to moderate cognitive impairment and periodontitis. These 60 patients will be randomized to two groups (intensive vs. standardized periodontal treatment). As randomization will be computer generated, the likelihood of randomization to either group is 50:50.
Primary Purpose
Prevention
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
Active Comparator
Standard treatment (control)
Dental evaluation and dental prophylaxis at baseline, 3, 6, and 9 months and standard oral hygiene instruction.
  • Procedure: Standard Treatment
    Dental evaluation at baseline, 3, 6, and 9 months.
Experimental
Intensive Treatment
Dental evaluation at baseline, 3, 6, and 9 months. Plus one or more sessions as needed at baseline of full mouth supra- and sub-gingival scaling and root planing, plus oral hygiene instruction. Additional sessions as necessary to remove remaining local factors and treat inflammation and bacteria overgrowth. Additional evaluations and therapy at 2 months or as needed based on therapeutic response. If bleeding on probing levels do not decrease to <20% of sites following initial therapy or at subsequent visits, intermediate treatment visits will be scheduled. Each participant will be instructed to use half of a capful of 0.12% chlorhexidine twice a day during active treatment including two weeks beyond the treatment visit.
  • Procedure: Intensive Treatment
    Dental evaluation at baseline, 3, 6, and 9 months. Plus one or more sessions as needed at baseline of full mouth supra- and sub-gingival scaling and root planing, plus oral hygiene instruction. Additional sessions as necessary to remove remaining local factors and treat inflammation and bacteria overgrowth. Additional evaluations and therapy at 2 months or as needed based on therapeutic response. If bleeding on probing levels do not decrease to <20% of sites following initial therapy or at subsequent visits, intermediate treatment visits will be scheduled. Each participant will be instructed to use half of a capful of 0.12% chlorhexidine twice a day during active treatment including two weeks beyond the treatment visit.

Recruiting Locations

University of Maryland - Administrative Center
Baltimore, Maryland 21201
Contact:
Kimberlly A Nordstrom, CCRC
410-706-3941
knordstrom@som.umaryland.edu

More Details

NCT ID
NCT03755362
Status
Recruiting
Sponsor
University of Maryland

Study Contact

Laila Anthony, BS
410-605-7000
lganthony@som.umaryland.edu

Detailed Description

Periodontal Disease (PD) is present in 60+% of adults >65 years and is associated with tobacco smoking, diabetes, and atherosclerosis that worsen inflammation, comorbidities common in older people with mild to moderate cognitive impairment (MCI). Older MCI patients are prone to poor oral hygiene and dental health, which if untreated worsens inflammation-mediated brain and nervous system function, and accelerates progression to dementia. Asymptomatic carotid artery stenosis (ACAS) is often a silent disease detected in only ~10% of older adults, and may have a strong association with MCI. This study examines the effects of intensive therapy for periodontitis on cognition in high-risk older people with ACAS. Results could highlight PD as a readily modifiable risk factor for dementia.

This pilot study examines the hypothesis that intensive treatment of PD (IPT) in older people with MCI and ACAS will attenuate their cognitive decline by reducing oral microbial-mediated inflammation and improving cerebrovascular endothelial function that contribute to neurodegeneration-associated dementia.

The aims are to determine the effects of intensive compared to control PD treatment (randomized: IPT vs. CPT) in 60 MCI subjects with ACAS and PD on 1) Cognitive function (Primary Outcome) and quality of life (Secondary Outcome), and 2) The potential mechanisms mediating these effects

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.