| Popis: |
No machine is capable of reproducing muscle synergy and proprioception. Articulators can be adjusted to the positional records as secured from the patient, but they can only approximate mandibular movements. Many of the errors incorporated in articulators result from the attempts to use one set of guides for all of the selected articulator movements. Insufficient range of adjustment is allowed in these instruments for the duplication of the mandibular movements. Even when sufficient adjustments are included in the articulator, each adjustment cannot be set by direct, independent measurements of the corresponding value in the head. Instead, articulators are set by indirect measurements which often are composite indications of several dimensions. Hence, the significance of the theoretically increased accuracy of the more adjustable instruments is questionable. The optimal number of adjustments which should be incorporated in an articulator has not yet been determined by clinical evaluation. |
