Kazuyoshi Uemura

Cornelia de lange syndrome with cleft palate

4 cases of Cornelia de Lange syndrome with cleft palate are presented. All cases had the characteristic features of this syndrome. As to oral manifestations, high arches were noted in 2 cases, cleft of hard and soft palate in 1 case, submucous cleft palate in 2 cases. As the others abnormalities, partial anodontia and microdontia were presented. In this report, characteristic features of these 4 cases with referential literature are described.

Real-time holographic interferometry to measure displacement of the facial bone

The deformation of the facial bone made up of many complex- formed bones was measured and the role of suture considered with the mechanical response. The displacement of human dried facial bone was measured and considered under static loads by real time holographic interferometry. Materials were dried human skulls. Various loads were applied to the zygomatic, maxillary and the other facial bones by means of a loading apparatus. As the experimental result obtained from the load to the neighborhood of the temporo-zygomatic suture on the temporal bone, density of interference fringes increased on the temporal bone more than on the zygomatic and other facial bones and parallel interference fringes were observed on the temporal bone. The buffer effect on the temporo-zygomatic suture to the load was greater than the sutures of other facial bones. When the amount of load was increased on the same bone, it was expected that the zygomatic arch was broken independently as the type II of the fracture patterns by Knight and NOrth. When the neighborhood of the median suture on the maxillary bone was loaded, fine interference fringes were observed horizontally on the maxillary and zygomatic bones, while coarse interference fringes occurred on the frontal bone and the bilateral fracture pattern by LeFort was expected.

Measurement of displacement on facial bone by real-time holographic interferometry

The displacement of human dried facial bone was measured and considered under static loads by real time holographic interferometry. Materials were dried human skulls. Various loads were applied to the zygomatic, maxillary and other facial bones by means of a loading apparatus. As the experimental result obtained from the load to the neighborhood of the fronto-malar suture on the zygomatic bone, density of interference fringes increased on the zygomatic bone more than on the other facial bones and parallel interference fringes were observed on the zygomatic bone. Densities of orbital maxillary and zygomatic bones were greater, when the load was applied to the center of infraorbital margin than when it was applied to the other facial bones. When the neighborhood of the front-malar suture on the frontal bone was loaded, coarse interference fringes occurred on the zygomatic, maxillary and orbital bones, while fine interference fringes appeared on the frontal bone. When the maxillary bone near infraorbital margin was loaded, concentric circular fringes were observed. The result shows that the displacement depends on the loading point. When the load applied to the zygomatic bone, parallel fringes appeared on the bone. This means that the bone deformed almost as a body.

Clinical study of the malar bone fracture. Part 2: Usefulness in diagnosis of the malar bone fracture and its classification using computed tomography.

In the malar bone fracture, conventional radiographic methods has the limitation to analyze the pattern of displacement in an anteroposterior direction of the face. Thirty-four patients with malar bone fractures were examined with the biplane computed tomography (CT), i. e. the axial CT combined with the coronal CT, to analyze the displacement of the fragments.Malar bone fractures were classified into five groups according to the location and direction of the fragments.It is possible to establish a more complete three-dimensional pattern of displacement in malar bone fractures using the biplane CT.