168 Theories and techniques of oral implantology

Fig. 5-65. The implant has been inserted where there was sufficient bone to receive it and its head bent parallel to remaining teeth. (Courtesy M. Chercheve.)

Fig. 5-66. The principle of Scialom's triplant: each pin is set at a different angle, and their heads are bent together to form a support for a prosthesis. (Courtesy T. Seialnm

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Fig. 5-67. Scialom's triplant is particularly useful in circumventing a maxillary sinus, as done often by Linkow. It makes an excellent posterior brace when no other type of implant can be used.

It has also been used in other areas, but with less success. Because the strength of the implant lies in placing its legs as far apart as possible, the triplant is far less successful in sites where the alveolar bone is not broad, as in the anterior regions of the jaws. The major problem with the triplant is loosening as a result of vertical pressures. Great care must be taken in inserting the triplant, fusing the pins, stabilizing it, and ensuring good occlusion.