In vivo scaling and root planing forces.

Area of Science:

• Periodontology
• Biomechanical Engineering

Background:

• Periodontitis requires mechanical debridement through scaling and root planing.
• Understanding the forces exerted during these procedures is crucial for optimizing treatment and patient outcomes.
• Variability in technique among dental professionals may influence treatment efficacy.

Purpose of the Study:

• To quantify and compare the in vivo forces applied during scaling and root planing by dentists and dental hygienists.
• To investigate the presence and magnitude of negative forces impacting periodontal soft tissues.
• To identify factors contributing to force variability in periodontal therapy.

Main Methods:

• Ten dentists and ten dental hygienists performed scaling and root planing on adult periodontitis patients.
• Forces were measured in vivo using a piezo-electric receiver and electronic transducer, converted to Newtons (N).
• Both positive (debridement) and negative (soft tissue impact) forces were recorded and analyzed.

Main Results:

• Mean scaling forces were 5.70 N (dentists) and 5.38 N (hygienists); mean root planing forces were 4.62 N (dentists) and 4.58 N (hygienists).
• No statistically significant differences were found between scaling and root planing forces, or between dentists and hygienists.
• Significant differences in force application were observed among individual therapists for both positive and negative forces (P=0.0001).

Conclusions:

• Individual therapist technique significantly influences force application during scaling and root planing.
• The developed methodology allows for precise measurement of forces, potentially enabling studies on the clinical effectiveness of specific treatment 'doses'.
• Further research can refine our understanding of optimal force parameters for effective and safe periodontal debridement.