Implant biomechanics
Introduction:
An implant and its prosthesis must be designed, placed and balanced to withstand the forces developed during occlusal functions and especially during parafunction movements.
1-Definition of biomechanics : it is the application of mechanics to biological systems.
2-A constraint : is the internal response of a body to the application of external forces,
Biomechanics in implantology is based on the study of the balance between, on the one hand, the resistance of the implant complex: bone, implant, prosthesis
And on the other hand the forces applied during the function.
3-Comparison of tooth and implant mobility: on a tooth , axial mobility can vary from 25 to 100µ, so there is a shock absorber and bone stimulation effect. On the other hand, at the implant level the amplitude of the displacement is lower (between 3 and 5µ), the shock absorber effect does not exist.
4-Factors involved in implant biomechanics:
1-The diameter of the implants: the increase in the implant diameter increases the resistance of the implant prosthesis complex.
2-The implant bearing surface : macroscopically the bone-implant interface can see its surface increase by playing on the length and diameter of the implant.
3-number of implants : ideally should correspond to the number of root units to be replaced. This assessment is not strictly applied. Several factors are taken into account. It is therefore possible to have a number of implants lower than the number of root units to be replaced without a significant increase in the risk of overload.
4-Positioning of implants : positioning the implants in a tripod allows for a support polygon, much more stable than an implant alignment.
5-parafunctions: bruxomania is not a formal contraindication, but is considered a factor of failure if certain precautions are not taken into account, such as the use of large implants that can support a very significant occlusal load.
Wisdom teeth may need to be extracted if they are too small.
Sealing the grooves protects children’s molars from cavities.
Bad breath can be linked to dental or gum problems.
Bad breath can be linked to dental or gum problems.
Dental veneers improve the appearance of stained or damaged teeth.
Regular scaling prevents the build-up of plaque.
Sensitive teeth can be treated with specific toothpastes.
Early consultation helps detect dental problems in time.