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The Journal of Physiological Sciences

, Volume 69, Issue 1, pp 159–163 | Cite as

Relationship between bite size per mouthful and dental arch size in healthy subjects

  • Kouichi Shiozawa
  • Yasumasa Mototani
  • Kenji Suita
  • Aiko Ito
  • Naoya Kawamura
  • Yuka Yagisawa
  • Ichiro Matsuo
  • Yoshio Hayakawa
  • Megumi Nariyama
  • Daisuke Umeki
  • Yasutake Saeki
  • Yoshiki Ohnuki
  • Satoshi OkumuraEmail author
Short Communication
  • 64 Downloads

Abstract

Although multiple factors influence food bite size, the relationship between food bite size per mouthful and mandible or tongue size remains poorly understood. Here, we examined the correlations between food bite size and the lower dental arch size (an indicator of tongue size) in human subjects with good oral and general health, using fish sausage and bread as test foods. Notably, bite size of both foods was significantly positively correlated with the lower dental arch size, whereas masticatory performance (measured in terms of glucose extraction from a gummy jelly) showed no dependence on bite size. Further, bite size was significantly positively correlated with the body mass index. Our findings suggest that larger bite size is associated with larger tongue size, which might be a contributory factor to obesity.

Keywords

Bite size Dental arch size Tongue size Masticatory performance 

Notes

Acknowledgements

We are grateful to Ms. Yoko Shinoda (Tsurumi University, Yokohama, Japan) for assistance in preparing the figures for publication.

Funding

This study was supported in part by the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant (15K12330 to K. Shiozawa, 22791147, 20790860 to YM, 15K18973, 24970219 to K. Suita, 17K12067 to YO, 17K11977, 26463127 to MN, 17K17342, 26861803 to DU, and 18K06862, 16H05300 to SO); MEXT-Supported Program for the Strategic Research Foundation at Private Universities (S1511018 to SO); Yokohama Academic Foundation (YO); the Naito Foundation (2015-119 to SO); Senshin Medical Research Foundation (SO); an Academic Contribution from Pfizer Japan (AC160910, AC1500818, AC170780 to S.O.); the Research Foundation for Community Medicine (SO); Mitsui Life Social Welfare Foundation (SO), Research Promotion Grant from the Society for Tsurumi University School of Dental Medicine (29002, 27010 to IA, 28008, 30003 to NK, 28006, 30002 to YY, 29007 to KS).

Compliance with ethical standards

Ethics approval

This study was conducted with the approval of the Ethics Committee of Tsurumi University School of Dental Medicine (approval No. 1020), and followed all the principals of the Helsinki Declaration. Informed consent was obtained from each subject after a full explanation of the experimental protocol had been given.

Conflict of interest

The authors report no conflict of interests.

Supplementary material

12576_2018_630_MOESM1_ESM.docx (66 kb)
Supplementary material 1 (DOCX 66 kb)

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Copyright information

© The Physiological Society of Japan and Springer Japan KK, part of Springer Nature 2018

Authors and Affiliations

  • Kouichi Shiozawa
    • 1
  • Yasumasa Mototani
    • 1
  • Kenji Suita
    • 1
  • Aiko Ito
    • 1
    • 2
  • Naoya Kawamura
    • 1
    • 3
  • Yuka Yagisawa
    • 1
    • 2
  • Ichiro Matsuo
    • 1
    • 3
  • Yoshio Hayakawa
    • 1
    • 4
  • Megumi Nariyama
    • 5
  • Daisuke Umeki
    • 2
  • Yasutake Saeki
    • 1
  • Yoshiki Ohnuki
    • 1
  • Satoshi Okumura
    • 1
    Email author
  1. 1.Department of PhysiologyTsurumi University School of Dental MedicineYokohamaJapan
  2. 2.Department of OrthodonticsTsurumi University School of Dental MedicineYokohamaJapan
  3. 3.Department of PeriodontologyTsurumi University School of Dental MedicineYokohamaJapan
  4. 4.Department of Dental AnesthesiologyTsurumi University School of Dental MedicineYokohamaJapan
  5. 5.Department of Pediatric DentistryTsurumi University School of Dental MedicineYokohamaJapan

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