Splints with guiding telescopes which advance the mandible
For a controlled protrusive setting of the lower jaw, the main casts are set into the fixator with the aid of the measuring instrument according to George.
The retentive parts on the duplicated casts are blocked out with wax and then vacuum formed with 2.0 mm Duran® foil which was previously underlaid with space maintaining foils. While finishing the splints, in the anterior area the incisal edges are covered 2 mm. In the posterior area, the foil reaches up to 1 mm over the gingival margin.
The fixing points of the guiding telescopes in the upper jaw are located buccally and interocclusally in the molar area; and in the lower jaw buccally and interocclusally between the canine and the premolar. The IST fixing attachments are set using the positioning aid and the retentions may have to be adapted to the tooth form. The Duran® foils are roughed; the retentions of the attachments are heated with a flame and melted down into the foils. For the final fixation, acrylic is added onto the retentions.
