 |
 |
|
 |
|
 |
|
 |
|
|
 |
|
 |
|
 |
|
 |
|
 |
 |
 |
 |
 |
 |
Myofunctional Forces on the Dentition
Q - How much force does it take to move an anterior tooth?
A - Only 1.7gm of lip pressure above the resting values is necessary for moving teeth.1
Q - What force does the lip exert?
A - Labial pressure exerted against the lip bumper has been estimated to range between 100gm and 300gm.2
Q - What force is the tongue capable of exerting?
A - Most persons adopt a swallowing pattern in which the tip of the tongue is placed in the rougae area and a pressure of roughly 100gm per cm2 is exerted upward and backwards. In aberrant swallow a force of 500gm can be exerted against the anterior teeth.3
Q - What are the forces on the occlusion during swallowing?
A - Gibbs found forces during swallowing averaged 66.5 pounds which was substantially higher than 58.7 pounds during the occlusal phase of chewing.4
REFERENCES
1. Weinstein
S. - AJO 1967;53:881-903.
2 . Sakuda M. Ishizwa M. - J. Dent Res 1970; 49:677.
3 . Profit W.R. - Arch Oral Biol 1972;17:555-63.
4. Gibbs C.H, Mahan PE Brehnan K - J Pros Dent. 1981.
| Home
|
| The Pre-Orthodontic Trainer | The
Trainer for Braces |
| The TMJ Appliance | New Products
|
Patent No. 5 259 762