A determination of bite force in northern Japanese children

Area of Science:

• Pediatric Dentistry
• Biomechanical Engineering
• Human Physiology

Background:

• Assessing children's bite force is crucial for understanding oral development and function.
• Previous research has not extensively documented bite force variations across different age groups in Japanese school children.

Purpose of the Study:

• To investigate the relationship between age and bite force in a large cohort of Japanese school children.
• To analyze sex-based differences in bite force across various age categories.
• To explore the correlation between bite force development and malocclusion prevalence.

Main Methods:

• A new occlusal force gauge was employed to measure bite force in 2594 school children aged 3-17 years in northern Japan.
• Measurements were taken at the first molar (permanent dentition) or second primary molar (primary dentition).
• Data was collected during oral health examinations in May and June 2001.

Main Results:

• Significant variations in bite force were observed across different age groups, with force generally increasing with age.
• Average bite forces ranged from 186.2 N (males) and 203.4 N (females) in nursery school children to 545.3 N (males) and 395.2 N (females) in high school children.
• Malocclusion prevalence increased from less than 30% in nursery school children to nearly 70% in high school children.

Conclusions:

• Bite force in children is strongly influenced by age and developmental stage.
• The increasing prevalence of malocclusion with age suggests a potential link with changes in bite force dynamics.
• These findings provide valuable normative data for pediatric dentistry and biomechanical research.