Scientific Principles in the Design of Dental Implants in Relation to Types of Force and Its Application to the Patient (1)

Scientific Principles in the Design of Dental Implants in Relation to Types of Force and Its Application to the Patient (1)
 
The task of dental implant is to transfer forces to surrounding biological tissues, such as bones and gums. The guidance and control of biomechanics is dependent on two factors:
1 - Characteristic of the force input
2 - Functional level (functional) where the force is propagated.

 

 

This control and guidance of the forces are directly related to the principles of designing the initial function of the implant and the degree of modulation of the implant-dependent prosthesis. Accordingly, the performance of the forces and their characteristics and the bone-implantation-implant surface where the force is distributed is more than 90 Implant design available. The biomechanical basis of different implant designs is evaluated based on their ability to control biomechanical forces. The fundamental principles of force (F) and level (S) are combined with the principles of implant engineering to achieve the desired clinical goals.
 
Three forces are inserted into the mouth over dental implants.
A - Pressure force B - Tensile force C - Shear force
Bone is more resistant to pressure than ever before. In the face of tensile strength, the bone is weaker than 30% and shear strength is 65% weaker. This description should, as far as possible, prevent the entry of shear forces to the bone, because the bone is against these forces with the least resistance and in areas where bone density is less important, this is very important because bone strength is directly proportional to the density It is in communication
An implanted body with a macroscopic design as well as microscopic components as well as microscopic components. Both of these are linked together in clinical behaviors (oral environment) while being independent.
Microscopic properties are important during the initial repair of the implants as well as the time when the force is applied, while the macroscopic properties of the implant body are more important in the early loading (loading) of the implant and subsequent loading.
Selendrick implants with a polished surface are easier to place on the bone when inserting the implant during surgery. But to the implant-bone contact area, they bring more shear forces. In contrast, in the conical implants, the more convergence (cone) of the implant is.
The amount of compressive force transmitted to the level of the implant-bone transposition will be greater, but the extent of implant convergence of more than 30 degrees can not be increased because it shortens the length of the implant, resulting in a primary stability An important factor in the initial repair will be reduced
In any case, the lower level of contact in the conical implant increases the stress levels on the bone crust. In addition to a conical implant, the semicircular screws often have a lower depth because their outer diameter is decreasing, which is the phenomenon of initial implant stability Reduces.