To identify the basic parameters of oral behavior in mice, we recorded the three-dimensional jaw movement trajectories and masseter and digastric muscle activities in freely behaving mice eating foods of various textures. Results showed that: (1) there are characteristic jaw movement patterns for food intake and mastication; (2) the pattern in a chewing cycle may be divided into opening, closin...

Incorrect oral habits, such as dysfunctions and parafunctions, may lead to the development of mastication anomalies. The present analysis covered 15 publications from the years 2005-2015, examining the impact of harmful oral habits and dysfunctions on the development of mastication anomalies. Based on the literature review, it can be stated that malocclusion is common in populations worldwide, ...

The aim of the authors is in conditions of clinical study to investigate the masticatory function in patients with different types of prostheses. Normal function requires the coordinated action of many elements, including teeth, salivary glands, tongue, and masticatory muscles. Dysfunction in any of these areas can result in impaired mastication. Missing teeth and old prostheses are concern to ...

Congenital double lip is a rare developmental anomaly which usually involves the upper lip. It may occur in isolation or as a part of Ascher's syndrome. The occurrence of double lip may result in facial deformity especially when patient attempts to talk, smile, or even try to show the teeth. It affects esthetics and also interferes with speech and mastication. Although surgery may be undertaken...

This clinical report describes the prosthetic management of a patient following total glossectomy and total laryngectomy that severely compromised his oral function, caused facial disfigurement, and limited the patient's quality of life. A feeding aid prosthesis was designed to address the patient's chief complaint of difficulty in feeding and mastication. The prosthesis was designed as an impl...

Atrophy of the muscles of mastication is a well known indirect sign of damage to the mandibular division of the trigeminal nerve (V3). Because V3 motor palsy is difficult to diagnose clinically, computed tomography (CT) or magnetic resonance (MR) imaging of the head and neck often provide the only evidence of masticator space muscle atrophy (1). This finding, in turn, should alert the physician...

introduction we aimed to introduce a 6-universal-prismatic-spherical (ups) parallel mechanism for the human jaw motion and theoretically evaluate its kinematic problem. we proposed a strategy to provide a fast and accurate solution to the kinematic problem. the proposed strategy could accelerate the process of solution-finding for the direct kinematic problem by reducing the number of required ...