Objective: To compare three different oral hygiene regimens regarding plaque index (PI), bleeding on probing (BOP), the number of deepened periodontal pockets ≥4 mm (PPD), oral halitosis, and changes in oral health-related quality of life (OHRQoL) in an older population with periodontitis stage I-III and mild cognitive impairment. 1. Are there improvements in plaque index (PI), number of bleeding on probing (BOP) sites, number of probing depths (PPD), and intraoral halitosis in the two test groups compared to the control group? 2. Do the study interventions affect oral health-related quality of life in older adults with periodontitis and mild cognitive impairment? Study design: Type: Randomized controlled trial Duration: 6 months per participant, 2 years in total for data collection Participants: 90 participants divided into Intervention and Control groups Intervention Group A (Lumoral Dual-Light aPDT + Manual Toothbrush) Standardized oral hygiene instructions and the use of a manual toothbrush during the test period, with an adjunctive aPDT device (Lumoral®). Intervention Group B (Oral-B iO Powered Toothbrush) Standardized oral hygiene instructions and the use of an Oral-B iO powered toothbrush during the test period. Control Group Standardized oral hygiene instructions and the use of a manual TePe Select extra soft toothbrush during the test period.
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Change in the amount of dental plaque
Timeframe: Assessments will be conducted at baseline, at 3 months, and at 6 months.
Change in the amount of gingival bleeding on probing
Timeframe: Assessments will be conducted at baseline, at 3 months, and at 6 months.
Change in the number of periodontal pockets ≥4 mm in depth
Timeframe: Assessments will be conducted at baseline, at 3 months, and at 6 months.
MMSE-test
Timeframe: Baseline
Change in the amount of VSCs in the exhaled air
Timeframe: Assessments will be conducted at baseline, at 3 months, and at 6 months.
Change in values for the oral health related quality of life instrument OHIP-14
Timeframe: Assessments will be conducted from baseline to 6 months.