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

This study has been completed.
Sponsor:
Information provided by:
National Taiwan University Hospital
ClinicalTrials.gov Identifier:
NCT00172692
First received: September 12, 2005
Last updated: December 14, 2006
Last verified: June 2005

September 12, 2005
December 14, 2006
July 2004
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Complete list of historical versions of study NCT00172692 on ClinicalTrials.gov Archive Site
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Observation and Evaluation of Chewing Velocity Changes on Soft Food Chewing Efficiency
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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.

  1. HA containing chewing gum with habitual side teeth at the cycle time
  2. 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.

National Taiwan University Hospital, National Science Council

Observational
Primary Purpose: Screening
Time Perspective: Cross-Sectional
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  • Healthy
  • Mastication
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*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
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August 2004
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Inclusion Criteria:

  • Dental students
  • Healthy masticatory system
Both
20 Years to 30 Years
Yes
Contact information is only displayed when the study is recruiting subjects
Taiwan
 
NCT00172692
9361701237
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National Taiwan University Hospital
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Study Chair: Yuh-Yuan Shiau, Professor National Taiwan University Hospital
National Taiwan University Hospital
June 2005

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP