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[New aspects of the physiology of dental occlusion. 1. Morphology of the temporomandibular joint].

The present article review, in the recent literature, some anatomical and biomechanical concepts about the temporomandibular joint in order to the better understanding of the physiology and dysfunction of the articulation. We point out the references about the function of the meniscus in the mandibular dynamics and the functional matrix concept and its relationship to temporomandibular joint dysfunction.

Cartilage, Articular↗
PubMed2001

[Dental occlusion and pathology of periodontal inflammation].

Effect of occlusion disorders on regional circulation in periodontal tissues was studied in patients with periodontitis of medium severity. The role of selective polishing in arrest of periodontal inflammation was determined on the basis of clinical and rheoparodontographic findings. Terms and stages of selective polishing promoting redistribution of masticatory loading were determined. The effect of this procedure on microvascular tone in the periodontium, essentially affecting the course of periodontal inflammation, is discussed.

Dental Occlusion↗
PubMed1995

[Treatment of lateral cross-bite with active plates in conditions of raised dental occlusion and by the quad-helix method].

The purpose of the paper was to estimate the effects of the fixed elevation of occlusion on lateral cross-bite treatment. There was also comparative studies in the group of children treated with the quad-helix appliances. Own results were obtained from the studies of 36 children with lateral cross-bite whose occlusions were regulated. The children were divided into 3 groups:--in the first group 13 children had the occlusion arised with the metal dental crowns widened by metal flat surface on the buccal side. They were cemented on first permanent upper molars (Fig. 1);--in the second group 12 children had the occlusion arised by the mass type "Composite" covering first permanent lower molar teeth (Fig. 2); in both groups children were treated by upper active plate;--in the third group 11 children had the appliance quad-helix used to widen the upper dental arch (Fig. 3). The obtained results (Tax. 1-4) show that stable elevation of the occlusion makes the treatment shorter, especially in the children where the cooperation is worse. For the patients with bigger narrowness of the upper dental arch it is directed to raise the occlusion with the metal dental crowns with flat widened surfaces. In the cases when the narrowness is smaller it is sufficient to raise the occlusion by the mass type "Composite" (Fig. 2). The quad-helix appliance is the most effective method of the treatment in the case of deciduous and mixed teeth, because the time of treatment is short. In the treatment of lateral cross-bites the most important matter is to liquidate the disproportion between the width of the upper and lower dental arches (by widening the maxillae) and to obtain the regular bite.

Child↗
PubMed2002

Relationship between dental occlusion and physical fitness in an elderly population.

BACKGROUND: The relationship between physical fitness and dental health status in elderly adults is still unknown. The purpose of the present study is to examine the relationship between physical fitness and occlusal condition of natural teeth in the elderly population. The sample consisted of 591 individuals aged 70 years and 158 aged 80 years selected from the registry of residents in Niigata city. METHODS: Hand grip strength (kg), leg extensor strength (kg), leg extensor power (watts), stepping rate (time per 10 seconds), and one-leg standing time with eyes open (seconds) were measured. The Eichner index was used as a measurement of occlusal condition. It was based on existing natural tooth contacts between maxilla and mandible in the bilateral premolar and molar regions and determined the three groups of classification used. In comparing physical fitness with Eichner index, multiple regression models were developed to adjust for variables such as age, gender, height, body weight, past medical history, blood pressure, serum albumin concentration, presence of lower back pain, smoking habit, marital status, and education. RESULTS: Multiple regression analyses revealed that leg extensor power (R(2) =.627, p <.05), stepping rate (R(2) =.159, p <.05), and one-leg standing time with eyes open (R(2) =.179, p <.05) showed significant correlations with the Eichner index. CONCLUSIONS: Leg extensor power, stepping rate, and one-leg standing time with eyes open are useful indicators in evaluating lower extremity dynamic strength, agility, and balance function, respectively. These findings suggest that dental occlusal condition is associated with lower extremity dynamic strength, agility, and balance function in elderly adults.

Aged↗