Behavioural Determinants of Post-Brushing Dental Plaque Levels: A Video-Based Analysis

Area of Science:

• Dental Hygiene and Oral Health
• Behavioral Science in Dentistry

Background:

• Toothbrushing is the primary method for dental plaque removal.
• Optimal toothbrushing techniques, duration, bristle wear, and dentifrice amount lack sufficient evidence-based guidance.
• Behavioral factors influencing plaque levels require further investigation.

Purpose of the Study:

• To identify behavioral factors linked to post-brushing dental plaque levels.
• To analyze habitual toothbrushing using video-based methods.
• To provide evidence-based recommendations for effective plaque control.

Main Methods:

• Eighty-eight adults were video-recorded during habitual toothbrushing.
• Toothbrushing behaviors were coded using specialized software (Mangold Interact).
• Plaque levels were assessed using the Turesky Modification Quigley-Hein Index (TMQHI).

Main Results:

• Area-specific brushing duration was the most significant factor associated with reduced plaque scores.
• Tooth surfaces brushed for 5 seconds or longer exhibited significantly lower plaque indices.
• Brushing duration and area coverage were the only significant factors in the final model.

Conclusions:

• Area-specific brushing duration is the strongest determinant of post-brushing plaque levels.
• Effective plaque control necessitates equitable time allocation across all tooth surfaces.
• A minimum of 5 seconds per area is recommended for optimal plaque removal.