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Observation and Evaluation of Chewing Velocity Changes on Soft Food Chewing Efficiency

NCT00172692 · Status: COMPLETED · Type: OBSERVATIONAL

Last updated 2006-12-15

No results posted yet for this study

Summary

Soft food chewing does not require strong bite force. The number of chewing strokes and occlusal surface area of the posterior teeth are more important. Clinically, reduction of occlusal surface to protect the abutments of a fixed or removable partial denture or the implant supported teeth is often necessary. If a certain chewing ability is maintained with reduced occlusal area, changing chewing velocity might help. For this hypothesis, the effect of chewing velocity on soft food chewing ability would be observed first. The purpose of this study is to evaluate the deliberately changed chewing gum chewing velocity on the chewing ability of healthy subjects whose dental occlusal surface area is known. Twenty dental students (10 men and 10 women with an age range of 20-30 years) with healthy masticatory systems and complete dentition will be asked to chew HA containing chewing gum with habitual side teeth at the cycle time of 0.5 sec, 1.0 sec and 1.5 sec for 30, 40, and 50 times. Jaw movement, tooth contact, and muscle activities will be observed during chewing gum chewing. The distribution of HA particles in the gum bolus after each chewing session will be measured and regarded as the chewing efficiency of that subject. Occlusal surface area of the maxillary posterior teeth, chewing rate, chewing time, muscle activity and jaw lateral displacement will be related to the chewing efficiency with multiple regression analysis. The effects of practice due to changing of chewing rate will also be evaluated.

Conditions

  • Healthy
  • Mastication

Sponsors & Collaborators

  • National Taiwan University Hospital

    lead OTHER

Principal Investigators

  • Yuh-Yuan Shiau, Professor · National Taiwan University Hospital

Eligibility

Min Age
20 Years
Max Age
30 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2004-07-31
Completion
2004-08-31

Countries

  • Taiwan

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00172692 on ClinicalTrials.gov