"Stress Breaker Hinge" for A Partial Denture"Copyright Material By:
F.Spiva Jr. CDT MDT CD
The Denture Pro.
<thedenturepro@aol.com>
When a "Lower" partial denture replaces the last two to four
natural teeth on one side or both, most partial denture designs are created by casting a ridged metal framework with which to place the denture teeth and plastic gum sections on.
Part of the design will include metal clamps that fit around the last natural tooth next to the area where the missing natural teeth begins.....My experience is that those ridged designs tend to place to much stress leverage on the natural teeth they clamp on to. The tissue ( Gums ) under the plastic saddles that hold the denture teeth, at some point will shrink from under the saddles. When this happens the back of the partial is pushed downward during chewing, not only because of shrunken tissue but also due to the fact that the existing tissue is soft and compressible.
Such a ridged design, when flexing, applies undue stress pressure on the teeth they clamp on to.......However, there is a way to eliminate that stress and pressure, it's called a "Stress Breaker Hinge". The Stress Breaker Hinge is exactly what the name implies. It's a small hinge that is designed to give the free end saddle of a partial the ability to slightly move up and down with chewing pressures while at the same time put no pressure on the partial denture clamps, they remain solidly in place and do not move when the saddle moves.
In the long run the partial with Stress Breakers in them protects the natural teeth they clamp on to and the tissue as well. Many many natural teeth are lost because of rigid designed partial dentures. I have many patients come to my office asking to have a tooth added to their partial because the natural tooth that the clamp held on to had gotten loose and been extracted. Sometimes it was obvious that the partial had been added on to before for the same reason. Chances are 90% that stress breakers would have saved those teeth.
If you have questions about the above information, respond on this site or please Email The Denture Pro. at thedenturepro@aol.com for a personal response.
The Denture Pro.
<thedenturepro@aol.com>
When a "Lower" partial denture replaces the last two to four
natural teeth on one side or both, most partial denture designs are created by casting a ridged metal framework with which to place the denture teeth and plastic gum sections on.
Part of the design will include metal clamps that fit around the last natural tooth next to the area where the missing natural teeth begins.....My experience is that those ridged designs tend to place to much stress leverage on the natural teeth they clamp on to. The tissue ( Gums ) under the plastic saddles that hold the denture teeth, at some point will shrink from under the saddles. When this happens the back of the partial is pushed downward during chewing, not only because of shrunken tissue but also due to the fact that the existing tissue is soft and compressible.
Such a ridged design, when flexing, applies undue stress pressure on the teeth they clamp on to.......However, there is a way to eliminate that stress and pressure, it's called a "Stress Breaker Hinge". The Stress Breaker Hinge is exactly what the name implies. It's a small hinge that is designed to give the free end saddle of a partial the ability to slightly move up and down with chewing pressures while at the same time put no pressure on the partial denture clamps, they remain solidly in place and do not move when the saddle moves.
In the long run the partial with Stress Breakers in them protects the natural teeth they clamp on to and the tissue as well. Many many natural teeth are lost because of rigid designed partial dentures. I have many patients come to my office asking to have a tooth added to their partial because the natural tooth that the clamp held on to had gotten loose and been extracted. Sometimes it was obvious that the partial had been added on to before for the same reason. Chances are 90% that stress breakers would have saved those teeth.
If you have questions about the above information, respond on this site or please Email The Denture Pro. at thedenturepro@aol.com for a personal response.
No comments:
Post a Comment