PIN IMPLANT


The pin implant consists of five pins oriented in different directions: three are tangential to the anterior and inferior part of the cortical bone, while the other two shorter pins are tangential to the posterior part of the cortical bone (fig. 8, 9, 10).





fig. 8



fig. 9

The five pins, with a diameter of 1.3 mm, positioned approximately 3 mm from one another, are welded together by two crossbars with a diameter of 1.6 mm each; the prosthetic teeth are positioned above the implant.



fig. 10

Owing to the geometric complexity of this type of implant and the large number of elements required to reproduce it (31,540), it was necessary to simplify the most irregular areas of the hemimandible model used to study the other types of implant as follows:

- The superior part of the mandible is squared (fig. 11);
- the volume of cortical corresponding to the chin bone was not included in the study.

 



fig. 11

In addition, the shape of the post teeth and the prosthetic teeth is similar but not identical to that in the hemimandible model used to study other types of implant.
Owing to these differences in geometry and hence discretisation, when comparing the results with other types of implant, it was more appropriate to make a qualitative and comparative analysis, rather than a punctual and quantitative one.