The ゲルブスプリント is used to reposition the mandible and can also be used to recapture the disc. The Gelb is fabricated on the mandibular arch. It is usually fabricated in cold cure to a wax bite that brings the condyle into a more anterior, inferior position in the fossa and increases the vertical opening.There is posterior coverage connected by a lingual bar. The standard clasping is two ball clasps for retention. Slight indexing of the upper lingual cusps is used to maintain the position.