Consistent patterns of variation in macrobenthic assemblages and environmental variables over multiple spatial scales using taxonomic and functional approaches.

Spatial variability of environmental factors and macrobenthos, using species and functional groups, was examined over the same scales (100s of cm to >100 km) in intertidal sediments of two transitional water systems. The objectives were to test if functional groups were a good species surrogate and explore the relationship between environmental variables and macrobenthos. Environmental variables, diversity and the multivariate assemblage structure showed the highest variability at the scale of 10s of km.

Electromyographic study of activity of the masseter and anterior temporalis muscles in patients with temporomandibular joint (TMJ) dysfunction: comparison with the clinical dysfunction index.

Objectives: A comparison was made between the electromyographic patterns specific to patient with temporomandibular disorders and that of normal healthy patients.

Study Design: Electromyographic tests were carried out during rest and function of the masseter muscles and anterior temporalis muscles in a homogeneous group consisting of 95 patients for whom such pathology and its different degree of severity had been previously studied by means of a Helkimo Test. The electromyographic exploration results were compared to those of a control group consisting of 31 healthy subjects.

Electromyographic comparisons between clenching, swallowing and chewing in jaw muscles with varying occlusal parameters.

Unlabelled: The aim of this study is to determine the influence of Angle molar class, presence of a posterior crossbite, anterior guidance, as well as gender in the muscular activity of the masticatory system in a population of healthy dental students.

Study Design: Surface electromyography recordings are made for the masseter, anterior and posterior temporalis and digastric muscles; in three different tests: clenching at maximum intercuspation, swallowing and chewing.

Results: The results obtained show that: men achieve a higher masseter activity at maximum effort than women.