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Biomedical subjects

D O Lundquist

Publications and source records attributed to D O Lundquist.

5 recordsLinked to original sources

An indirect-direct method of crown fabrication for existing removable partial denture clasps.

A technique that uses a combined indirect-direct method for the fabrication of a crown under an existing removable partial denture clasp has been presented. Advantages of this method are as follows: (1) The coping is placed directly on the preparation so the rest and retentive surfaces are more accurately developed than with other methods. (2) Fewer adjustments are required because of the accuracy of this method as compared with waxing the crown in one step.

Crowns

Registrations for relating the mandibular cast to the maxillary cast based on Kennedy's classification system.

Accurate registrations of centric relation are mandatory for many aspects of diagnosis and treatment. Registrations can be obtained with a variety of techniques. However, each technique must give consideration to such factors as: the character and location of tooth support, the quantity and quality of soft-tissue support, the location of dentulous and edentulous regions, the neuromuscular control of the patient, and the physical characteristics of the registering material. Kennedy's classification system provides a guide to the selection of the method of registration.

Classification

Movement of abutments by removable partial denture frameworks with a hemimaxillectomy obturator.

A laboratory experiment was conducted to measure the amount of movement in each of two directions on each of seven teeth, induced by three common designs of retainer, under both splinted and unsplinted conditions. An analysis of variance on a four-way, completely crossed, fixed-effects model showed significant main effects for design, splintedness, and teeth involved. Also of significance were the interactions between the factors of splintedness and teeth and between design and splintedness. Most of the variability in tooth movement was due to differences among the seven teeth (49.3 per cent of variance) and to the interaction of splintedness and teeth (20.2 per cent of variance).

Dental Abutments