Ignite Creation Date:
2024-05-06 @ 3:37 PM
Last Modification Date:
2024-10-26 @ 1:53 PM
Study NCT ID:
NCT04690361
Status:
RECRUITING
Last Update Posted:
2023-02-22
First Post:
2020-12-27
Brief Title:
Monitoring the EMG Activity and Investigating the Relation Between Occlusal Contact Areas and Occlusal Loads During Light or Heavy Occlusal Forces
Sponsor:
National Taiwan University Hospital
Organization:
National Taiwan University Hospital
Study Overview
Official Title:
Monitoring the EMG Activity and Investigating the Relation Between Occlusal Contact Areas and Occlusal Loads During Light or Heavy Occlusal Forces
Status:
RECRUITING
Status Verified Date:
2023-02
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:
Inappropriate occlusal contact may affect the long-term prognosis of prosthodontic rehabilitation It is suggested to design light or without occlusal contact on implant prostheses when the patient bites with light force and normal occlusal contact when the patient bites with heavy force The concept of this implant-protective occlusion is based on the difference of movement between implants and natural teeth However how much force generated during a light bite or a heavy bite is not clearly defined in the literature Traditional methods to evaluate the occlusal contacts between antagonist teeth such as wax silicone occlusal paper and occlusal foil cannot evaluate the occlusal force Recently modern digital occlusion analysis systems T-Scan Dental Prescale II can evaluate occlusal force on almost normal intermaxillary relation The objects of this investigation are 1 to evaluate the effect of difference occlusal forces on the number distribution and size of occlusal contacts examined by 8μm occlusal foil and Dental Prescale II System DPS 2 to analyze the relation between EMG activity and occlusal forces and to identify the magnitude of light and heavy bite force the patients may exert during occlusal examination 3 to compare the results between habitual chewing side and the other side Twenty-four subjects will be included in this study With EMG biofeedback the subjects will exert 3570100 of maximum contraction EMG of clenching and the subjects occlusal contacts will be tested with the 8μm occlusal foil and DPS Each condition will be tested three times The subjects will chew gums to confirm their habitual chewing side after the occlusal tests Numbers distribution and size of occlusal contacts will be analyzed and compared This study may identify the magnitude of perceptual light and heavy occlusal forces and the maximum occlusal force The results are helpful for setting up the protocol and strategy of occlusal adjustment and to prevent biomechanical complications of dental prostheses
Detailed Description:
None
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None