The hole in the valve: presentation with haemolytic anaemia.
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Aged↗
Biomedical subjects
Y Terada
Publications and source records attributed to Y Terada.
Numeric approach to the biomechanical analysis of thermal effects in coated implants.
A two-dimensional, finite element method was used to examine the influence of material selection and suprabony exposure of the implant coating on thermal and mechanical stress distribution. Hydroxyapatite coating reduced the heat conduction to the surrounding tissue because of its low thermal conductivity. However, thermal stress resulted from thermal expansion of the hydroxyapatite and titanium core. This might influence the success of hydroxyapatite-coated implants because the biomechanical properties of ceramics are so poor for tensile and shearing stress. In addition, this tendency becomes more pronounced when the hydroxyapatite coating surface extends beyond the cortical bone.
Biomechanical Phenomena↗
Factors correlated with caraniomandibular disorders in young and older adults.
This study was conducted to examine prevalence of craniomandibular disorders in young adults compared with that in older subjects. In addition, the relationship between various oral conditions and this dysfunction was studied. No difference was found in the incidence of craniomandibular disorders between the groups. Classification according to the Helkimo index showed significant difference in complaints of craniomandibular disorders symptoms between the groups. Most of the older patients did not complain of mild disorders. The results suggest that conditions such as the number of teeth, presence or absence of dentures, and the type of denture worn are not important factors in the pathogenesis of craniomandibular disorders.
Adult↗
A clinical study of the relationship between occlusal curvature and craniomandibular disorders.
The occlusal curvature should be harmonized with stomatognathic function, but excessive occlusal curvatures are found in some craniomandibular disorder patients. Forty healthy subjects and 95 patients with craniomandibular disorder (50 with clicking, 25 with locking, and 20 with myofascial pain dysfunction syndrome) were evaluated to investigate the functional significance of the occlusal curvature. Anteroposterior and lateral occlusal curvature were measured using the least-square approximation of the mandibular buccal cusps in a second-order quadratic and modification of Monson's 4-inch sphere. "Clicking" and "locking" groups had significantly greater occlusal curvatures than healthy subjects. There appeared to be a relationship between occlusal curvature and craniomandibular disorders.
Adolescent↗