Ignite Creation Date:
2025-12-24 @ 3:35 PM
Ignite Modification Date:
2026-01-02 @ 7:55 AM
Study NCT ID:
NCT00172692
Status:
COMPLETED
Last Update Posted:
2006-12-15
First Post:
2005-09-12
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Observation and Evaluation of Chewing Velocity Changes on Soft Food Chewing Efficiency
Sponsor:
National Taiwan University Hospital
Organization:
Study Overview
Official Title:
None
Status:
COMPLETED
Status Verified Date:
2005-06
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief 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.
Detailed Description:
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
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
Study Oversight
Has Oversight DMC:
Is a FDA Regulated Drug?:
Is a FDA Regulated Device?:
Is an Unapproved Device?:
Is a PPSD?:
Is a US Export?:
Is an FDA AA801 Violation?: