Influence of chewing time on salivary stress markers

• Tasaka Akinori

  Department of Removable Prosthodontics and Gerodontology, Tokyo Dental College

• Takeuchi Kai

  Department of Removable Prosthodontics and Gerodontology, Tokyo Dental College

• Sasaki Hiromitsu

  Department of Removable Prosthodontics and Gerodontology, Tokyo Dental College

• Yoshii Takayuki

  Department of Removable Prosthodontics and Gerodontology, Tokyo Dental College

• Soeda Ryohei

  Department of Removable Prosthodontics and Gerodontology, Tokyo Dental College

• Ueda Takayuki

  Department of Removable Prosthodontics and Gerodontology, Tokyo Dental College

• Sakurai Kaoru

  Department of Removable Prosthodontics and Gerodontology, Tokyo Dental College

Abstract

Purpose: We investigated the influence of chewing time on salivary stress markers.<br>Methods: Participants performed arithmetic calculations for 30 min as stress loading, followed by chewing for 0, 5, 10, or 15 min. All experiments finished at 25 min after stress loading. With 0-min chewing, saliva was collected before stress loading (BS), immediately after stress loading (R0), and at 5, 10, 15, and 25 min after stress loading (R5, 10, 15 and 25). With 5, 10, or 15 min chewing, saliva was collected at BS and R0, immediately after chewing (Ch5, 10 and 15, respectively), and 25 min after stress loading (Ch5R25, Ch10R25 and Ch15R25, respectively). Salivary alpha-amylase activity and cortisol levels were measured to evaluate stress. Change in stress markers between R0 and Ch5, 10 and 15 or R25, Ch5R25, Ch10R25 and Ch15R25 were calculated.<br>Results: No significant differences were observed in rate of change in alpha-amylase activity among the chewing conditions. Rate of decrease in cortisol levels was significantly greater at 15-min chewing than at 5-min chewing. Rate of decrease in cortisol levels was significantly greater at 10 and 15-min chewing than at 0-min chewing.<br>Conclusion: The present results indicate that chewing time affects the reaction of the endocrine system to mental stress, and that continuous chewing for more than 10 min is effective in reducing stress.

Journal

• Journal of Prosthodontic Research

  Journal of Prosthodontic Research 58 (1), 48-54, 2014

  Japan Prosthodontic Society

Keywords

• Chewing
• Mental stress
• Salivary stress marker
• Chewing time
• Number of chewing strokes

Details

• CRID: 1390282680276120832
• NII Article ID: 130004953487
• DOI: 10.1016/j.jpor.2013.10.005
• ISSN: 18839207
• ISSN: 22124632
• ISSN: 18831958
• PubMed: 24456809
• Web Site: https://api.elsevier.com/content/article/PII:S1883195813001333?httpAccept=text/xml
• Web Site: https://api.elsevier.com/content/article/PII:S1883195813001333?httpAccept=text/plain
• Web Site: https://www.jstage.jst.go.jp/article/jpr/58/1/58_S1883-1958-13-00133-3/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2015095978
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • PubMed
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed