To investigate the effects of psychological stress on the masticatory muscles of rats, a communication box was applied to induce the psychological stress (PS) in rats. The successful establishment of psychological stimulation was confirmed by elevated serum levels of adrenocorticotropic hormone (ACTH) and changed behaviors in the elevated plusmaze apparatus. The energy metabolism of the bilater...

Given that public transportation networks are often worse in rural areas than in urban areas, rural residents who do not drive can find it difficult to access health-promoting goods, services, and resources related to masticatory ability. Moreover, geographical location, assessed by elevation, could modify this association. The aim of this study was to test whether the association between acces...

Ten female subjects with no history of temporomandibular disorders performed five exercises designed to induce masticatory muscle pain. Three of the exercises were replications of Christensen's tooth-clenching (1970) and tooth-grinding (1971) studies and Scott and Lundeen's mandibular protrusion (1980) study. The other two exercises were designed to induce specific unilateral masticatory muscle...

OBJECTIVE The objective of this study was to investigate the differences in masticatory efficiency among patients with different Angle's classes of malocclusion and to assess the correlation between masticatory efficiency and the occlusal contact area. METHODS The mixing ability index (MAI) was calculated for measuring masticatory efficiency of 61 adult patients according to Angle's classific...

PURPOSE The aim of this study was to obtain objective and standardized information on masticatory function and patient satisfaction following second molar single implant therapy. METHODS Twenty adult patients, who had restored second molar single implants more than 1 month before the study, were enrolled in this study. All patients received a chewing test using peanuts before and after insert...

Estimates of biting forces are widely used in paleontological and comparative studies of feeding mechanics and performance, and are usually derived from lever models based on measurements made on the skull that are relevant to the mechanics of the masticatory system. Owing to assumptions and unmeasurable errors in their estimation, such values are used comparatively rather than as absolute esti...

BACKGROUND Worldwide, millions of people are suffering from dementia and this number is rising. An index of quality of life (QoL) can describe the impact a disease or treatment has on a person's wellbeing. QoL comprises many variables, including physical health and function, and mental health and function. QoL is related to masticatory ability and physical activity. Animal studies show that dis...

The mastication is the first step in the digestion process and has as an objective prepare the food for the swallowing process and procession by the digestive system. (1-3) The masticatory sequence begins with the introduction of the food in the oral cavity, and ends with the swallowing of the bolus (2, 4, 5). Each masticatory sequence is a set of masticatory cycles, each cycle is composed by a...

Links Changes in postural EMG activity in the neck and masticatory muscles following obstruction of the nasal airways.

Recent advances in dentistry have enabled different treatment options in prosthetic dentistry, one of them is in relation to magnets which are available in small size and with strong attractive force. This magnets can be used for overdenture attachments which increases the stability of denture and reduces the lateral forces on abutment tooth. Rationale for tooth supported overdenture are to pre...