Differences in the factors associated with tongue pressure between children with class I and Class II malocclusions.

Background: The relationship between tongue pressure and masticatory performance during the mixed dentition period in cases of Class II malocclusion has not been clarified. The aim of this study was to determine differences in tongue pressure-related factors, including maxillofacial morphology and masticatory performance, between Class I and Class II malocclusions during the mixed dentition period.

Methods: A total of 56 children with Class I malocclusion (12 boys, 16 girls) or Class II malocclusion (16 boys, 12 girls) with mixed dentition were included in the present study.

The factors related to decreases in masticatory performance and masticatory function until swallowing using gummy jelly in subjects aged 20-79 years.

Background: There is growing international interest in the prevention of decreased oral function for managing oral health in older people.

Objective: The aims of the present study were to identify factors related to decreases in masticatory performance and masticatory function until swallowing in subjects aged 20-79 years old.

Methods: A total of 152 subjects, ranging in age from 20 to 79 years, were divided into six groups according to their chronological age: 20-29, 30-39, 40-49, 50-59, 60-69 and 70-79 years.

Factors associated with masticatory performance and swallowing threshold according to dental formula development.

Objective: The aims of the present study were to the determine changes in, and factors related to, masticatory performance and swallowing threshold according to dental formula development.

Methods: A total of 120 subjects, ranging in age from 4 to 19, and 21 to 29 years, were included in the present study. Grip strength and maximum occlusal force were measured in all subjects.