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Biomedical subjects

P Ludwig

Publications and source records attributed to P Ludwig.

72 records · Page 4Linked to original sources
PubMed1976

[Kinetics and stress distribution of supported free-end prostheses. I. Effect of the frame stability on the kinematics of the saddle and the stress on the edentulous prosthesis bed].

By means of inductive pressure and motion recorders, the influence of the stability of the framework, the extension of the saddle and type and location of anchorage on the kinetic properties of the denture and the distribution of load between edentulous base and abutment teeth was studied in three different free-end dentures. The findings are discussed with respect to the planning and technical design of dentures.

Biomechanical Phenomena↗
PubMed1976

[Kinematics and load distribution in braced free-end dentures. III. Influence of saddle surfaces on saddle kinematics and on the load-distribution abutiments-edentulous prosthesis saddle. Discussion and results].

In two upper-jaw free-end dentures with proximal rigid anchorage and equal average saddle width, the relationship between resilience of the mucous membrane of the alveolar ridge, the saddle area and the distribution of the load between abutment teeth and edentulous denture-bearing base was studied.

Alveolar Process↗
PubMed1976

[Quantitative studies on the retention mechanism of complete dentures. I. Studies on a phantom model].

In four full maxillary dentures, the physical mechanisms of retention were examined and quantitatively determined by inductive pressure and motion recorders, in tests performed on a model and on the patients. In addition to capillary or viscous forces, the pressure difference existing in the space between denture and palate on the one hand and the oral environment on the other and resulting during pull-off, provides the greatest retaining effect.

Denture Retention↗
PubMed1975

[Mandibular movements and joint function].

In five test persons the exact joint movements of the lower jaw in the area of the lateral teeth were tested with regard to precision of the movements and technical possiblities of balancing articulation. The result of these measurements show that there is extreme precision of the joint movements in a non-loaded lower jaw. With a uniformly bended compensation curve the joint movements can be compensated in sagittal direction only, and not in transversal direction. On the basis of these findings a method for the direct formation of the sagittal compensation curve is discussed.

Dental Occlusion, Centric↗
PubMed1975

[The development of strength in the masticatory muscles and its sensory control].

By means of inductive dynamometers the absolute force of mastication as well as factors influencing that force are studied. In addition to the mechanical effects resulting from the lower jaw's acting as lever arm, the pulp, especially its coronal portion, showed a dominating influence on the extent of the developed adduction force.

Dental Pulp↗