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Relationship between habitual chewing side and masticatory performance: a pilot study.

Mio Susuga1, Ohra Tanaka1, Yuh Hasegawa2

  • 1Department of Dental Hygiene, The Nippon Dental University College at Niigata, 1-8 Hamaura-chou, Chuo-ku, Niigata, 951-8580, Japan.

Odontology
|April 6, 2026
PubMed
Summary
This summary is machine-generated.

Masticatory performance differs between habitual and non-habitual chewing sides in young adults with Class I molar relationships. This study found significant differences in chewing efficiency based on molar classification in healthy young individuals.

Keywords:
Angle’s classificationGummy jellyHabitual chewing sideMasticatory performance

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Area of Science:

  • Dental Science
  • Biomechanics
  • Human Physiology

Background:

  • Masticatory performance differences between habitual chewing sides (HCS) and non-habitual chewing sides (NHCS) are understudied in young individuals with healthy dentition.
  • Angle's classification of first molar relationships is a key factor in occlusion, potentially influencing chewing efficiency.

Purpose of the Study:

  • To investigate the masticatory performance on HCS versus NHCS in individuals under 20 years old with complete permanent dentition.
  • To compare these differences between participants classified with a Class I first molar relationship and those with a non-Class I relationship.

Main Methods:

  • Twenty-eight female dental hygiene students were divided into Class I and non-Class I molar relationship groups.
  • Habitual chewing side (HCS) was identified using the cotton roll test.
  • Masticatory performance was assessed by measuring glucose extraction from gummy jelly chewed for 20 seconds on both HCS and NHCS.

Main Results:

  • In the Class I group, a significant difference in masticatory performance was observed between the HCS and NHCS (p=0.041).
  • In the non-Class I group, no significant difference was found between the HCS and NHCS (p=0.423).
  • The median glucose extraction for HCS in the Class I group was 202.00 mg/dL, and for NHCS was 191.00 mg/dL.

Conclusions:

  • The null hypothesis that there is no difference in masticatory performance between HCS and NHCS regardless of Angle's classification was rejected.
  • Angle's classification of first molars significantly impacts the difference in masticatory performance between chewing sides in young adults.
  • This suggests occlusal relationships play a role in developing functional chewing side preferences and efficiency.