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IMPLANT The pin implant is extremely effective in thin mandibles with extensive resorption that can be rehabilitated without bone incrementation or removal. In the light of biomechanical research, the resulting structure has been shown to be the most suitable for reducing cortical tensions. | |
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 The pins are constructed with varying gauges and lengths. |
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 They
are inserted by force mounted on a mandrel that revolves on a very low-speed micromotor
with a high torque to diminish friction |
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They
penetrate under pressure until they meet the basal cortical bone. The personal
technique used is described in the appropriate chapter. The spatula-shaped tip
gives greater penetration capacity as a result of helicoidal deformation as bone
density increases. | |
 Edentulous crest |  Perforation with high speed cutter |
 Deep probe with drill |  Insertion of first pin |
 A range of pins. Note the intentional lack of parallelism to avoid deep nerve structures |  Pins paralleled at surface for welding |
 Welding |  Postoperative occlusal view |
 Elimination of extramucosal undercuts for the impression using titanium composite materials. Mucosal contact is provided by the basal bar (see chapter on pins). |
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