Please assess the completion status of the following clinical trial:

Trial Title: Dental Carotid Cognitive Study

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Age equal to or greater than 65 years.~* Body Mass Index 18-35 kg/m2~* Mild to moderate periodontitis~* Mild to moderate cognitive impairment on Montreal Cognitive Assessment (MoCA) -range greater than or equal to 17 and less than or equal to 26 (i.e., range from 17-26).~* Detectable carotid plaque and carotid artery stenosis \<70% as diagnosed by doppler ultrasound.~* Able to perform prescribed dental hygiene and travel to medical center as required to participate in the study.~Exclusion Criteria:~* Inability to provide informed consent.~* Subjects with inability to perform cognitive and other research testing~* Prior stroke, depression (CESD \>16), neurologic or psychiatric disease that would affect cognitive testing, participation, and compliance to the research study.~* Subjects requiring chronic treatment with systemic corticosteroids or other systemic immunosuppressive drugs or drugs that would affect the 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).~* Inability to perform FDG-PET due to renal disease (eGFR \<30 mL/min/1.75m2).~* Receiving anticoagulant therapy (Warfarin) with an INR greater than 3.3 at time of dental treatment or with a bleeding disorder, or other diseases that may interfere with dental therapy.~* Subjects with medical conditions that the clinicians feel would limit their ability to participate.

- Gender: ALL
- Minimum Age: 60 Years
- Maximum Age: 100 Years
- Healthy Volunteers: f

Study Arms:
- Standard treatment (control) (Type: ACTIVE_COMPARATOR): Dental evaluation and dental prophylaxis at baseline, 3, 6, and 9 months and standard oral hygiene instruction.
- Intensive Treatment (Type: EXPERIMENTAL): 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.

Based on this trial design, predict the completion outcome and termination type (if applicable).