Biomedical subjects

S M Sheppard

Publications and source records attributed to S M Sheppard.

12 recordsLinked to original sources

PubMed1982

Asymptomatic morphologic variations in the mandibular condyle-ramus region.

The subjects in this study exhibited considerable condylar anatomic abnormalities and discrepancies in the absence of subjective symptoms. Differences in the mandibular condyle-ramus length from one side of the mandible to the other were found. Enlargements and bony irregularities in the region of the mandibular angle were observed and appear to be associated with increased muscular activity. All these anatomic changes are visible on routine panoramic radiographs and may be predisposing factors for subjective symptoms, especially when alteration of maxillomandibular relations are made.

Adult↗

PubMed1977

Characteristics of temporomandibular joint problems.

A review of the characteristics of 145 patients with temporomandibular joint and myofascial pain-dysfunction syndrome is presented. The material includes both temporomandibular and myofascial involvements. The evidence supports the psychophysiologic etiology theory for most patients. This does not exclude anatomic abnormalities which may be present in such patients nor anatomic abnormalities which may be present without psychogenic causes. The lack of awareness of the range of condylar movement is contributory to iatrogenic trauma. A classification of etiologic factors is proposed. The superimposition of one upon another can create a severe problem. The superimposition of two upon a third can create an unusually severe problem.

Adolescent↗

PubMed1977

The relationship of vertical dimension of atypical swallowing with complete dentures.

A number of subjects were studied cineflourographically during swallowing, and their vertical dimensions of occlusion were clinically evaluated. The subjects who had reduced vertical dimensions of occlusion were older than those with normal vertical dimensions, their dentures were older, their total years with complete dentures were more, and the tendency to swallow without opposing tooth contact was greater. The cumulative evidence indicates that such aberrant muscle activity might contribute to the regressive changes found in complete denture wearers.

Aged↗

PubMed1977

Subluxation of the temporomandibular joint.

The temporomandibular joint in actual function does not resemble other joints in the body in that the condyles leave their fossae with maximal opening and in some subjects with only a 35 mm. opening. The term subluxation, with its implication of abnormality, does not seem applicable to a normal movement. While significant problems, such as dislocation, locking, and loud clicking, can occur with such anterior-to-the-fossae movements, they are relatively rare. Most temporomandibular problems are associated with confinment of the condyles to their fossae with limited or no translatory condylar movement. A recognition of the normal range of condylar movement would lessen iatrogenic abuse of this area.

Humans↗

PubMed1972