| Popis: |
1. The longevity of fixed restorations depends upon bone support as much as any other one factor. However, the metabolic activity of the bone for each patient is different. Recognition of this variation eliminates many errors in the diagnosis, treatment planning, and prognosis of dental restorations. 2. An attempt to alter the existing interocclusal distance should be approached with caution. All available methods, including tracings of cephalometric roentgenograms, should be employed to accurately determine the amount of this space between the teeth in rest position. 3. Worn-out dentitions require that the functional surfaces of cusps be developed with a parabolic form if that dentition is to take its place as an efficient organ of a healthy masticatory system. 4. The cusps of dental restorations which will maintain functional equilibrium in the patient's mouth are dependent upon the condylar guidance, incisal guidance, plane of occlusion, Spee's curve, and cusp height. The influence of each of these factors was discussed. 5. An adjustable anatomic articulator is an indispensable tool in the development of functional occlusal surfaces. However, the results will be only as good as the thinking of the dentist who uses the instrument. 6. The value of the hinge axis determination was discussed, as well as the necessity for harmony between centric relation and centric occlusion. All deflective occlusal contacts must be removed before fixed restorations are placed in the existing occlusion. 7. Dental restorations must be developed from a dynamic point of view. This includes the straight protrusive, lateral protrusive, and lateral excursive movements of the mandible. 8. A technique for the generation of the occlusal surfaces of wax patterns that will be in functional occlusion for each individual patient has been described. 9. A thorough knowledge of the subject of functional occlusion without any preconceived ideas and an ability to apply sound biologic principles to methods of treatment will consistently produce fixed restorations of the highest degree of perfection. |
