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Biomedical subjects

J Edlund

Publications and source records attributed to J Edlund.

7 recordsLinked to original sources
PubMed1980

Masticatory efficiency.

A method for measuring masticatory efficiency is described as well as a mathematical formula expressing the masticatory efficiency as an index. A silicone compound was used as test material. The masticatory efficiency index was calculated as the mean of the best four out of five consecutive measurements of masticatory efficiency calculated from a specially designed formula.

Chemical Phenomena↗
PubMed1979

Sagittal splitting of the mandibular ramus. Electromyography and radiologic follow-up study of temporomandibular joint function in 44 patients.

A follow-up study was performed on 44 patients operated with sagittal splitting of the mandibular ramus for correction of a mandibular protrusion. The study included clinical examination, electromyography and masticatory efficiency test as well as radiography of the temporomandibular joint. The maximum opening capacity and protrusion of the mandible decreased one to three years after the operation. The activity of the temporal muscle decreased in rest position after the operation. Masticatory efficiency was unchanged. The position of the condyle in the fossa was unchanged postoperatively, while a posterior and superior condylar movement occurred during the fixation period. Normalization of the condylar position tended to occur one year after the operation. In 37 of 86 condyles, a double contour was seen on the postesuperior margin of the condyle one year after the operation. Possible mechanism behind the development of the new condylar bone layer is discussed.

Electromyography↗
PubMed1976

The effect of an occlusal interference on the masticatory system. An experimental investigation.

An experimental short term study on the effect of an occlusal interference on the path of closure of the mandible was carried out on 8 persons. The interference consisted of a gold inlay placed unilaterally in one of the mandibular first molars. Clinical and electromyographic studies revealed functional disturbances or pain in all subjects. The masticatory musculature was tender to palpation and showed coordinational disturbances; the TMJ showed tenderness to palpation, clicking and irregular movements and the interfering teeth periodontal tenderness.

Adult↗