Forensic examination was undertaken on a human skeleton of unknown identity which was discovered within the premise of a public cemetery. The material submitted to our examination was a skull having a total of 17 teeth in upper and lower jaws. General arrangement of these teeth, characteristic features thereof and missing teeth, together with further information on the incidence of tooth decay, levels of treatment received with each tooth and estimated time of treatment were part of the items of our examination. Beside these, further details were examined as to the state of pulp exstirpation, the way in which the hard tissues of teeth were cut for prosthetic purposes, the mode of treatment after the pulp exstirpation, the way in which the tooth was cut or excavated for pulp exstirpation and caries treatment, the selected kinds of filling materials such as the permanent cement and Neodine and the selected kinds of Sunplatinums used for crown works and their estimated thickness. From the data obtained, it was estimated that the skeleton was of a female 35 to 40 years old, being dead for about 1 to 2 years. A dentist and a technician who were responsible respectively for all the treatment and prosthetic construction given to the female could be traced and identified through our knowledges gained fom the reconstructed dental arches as to the ways in which the dental treatments were administered and as to the estimated time of the treatment, especially with relation to the crown work of 7__-| made from a Sunplatinum plate. The case was legally resolved as the skeleton of a wife.

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A survey was undertaken on the physical state of the whole population of public school pupils in Ohmuta city as to its possible yearly change through the period from 1961 to 1964, and the data obtained were compared with the average figures for both the Fukuoka prefectural population and the nation-wide population. Study was also made as to the possible effect of the residential environment upon the bodily growth in these subjects. Results obtained were summarized as follows. A remarkable increase was observed in height throughout the nation for every age stages of the subjects of both sexes as compared to the figure for the year 1900. The average for the Fukuoka prefectural population was smaller than that for the nation-wide population. A yearly increase of body weight was observed in both the nation-wide and Fukuoka prefectural population. Comparison of the average height and weight between the populations of Fukuoka Prefecture and Ohmuta city showed that the figures for the latter population was greater than those for the former. Reflecting the residential difference, the physical status in subjects residing in residential districts was most excellent, followed in order by those in commercial districts, agricultural districts and coal miners districts.

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In an autopsy case of 20-year-old male formosan rock monkey died from myocardial infarction, the authors found that it had been suffering from periodontosis. Patho-anatomical findings were myocardial infarction, congestion of lungs, liver, kidneys and spleen, atrophy of stomach and intestine, and periodontosis. In the periodontium there could be found localized gingivitis, breakdown of the principal fibers in the periodontal membrane and proliferation of capillaries. The resorption and osteoporosis of the alveolar bone were noticed in all the teeth, especially in the molars. However, there was no remarkable change in the supporting bone. In the maxillary and mandibulary arteries the authors could not find arteriosclerotic changes.

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1) The authors made a metal base denture for a patient suffering from an offensive heat shock caused by an acrylic resin denture, a poor heat-conducting material during daily meals for the last three years. The new metal denture resulted in eliminating such an offensive heat shock and has almost relieved him of fear for taking hot food and drink. 2) For the metal base of the denture a sheet of stainless steel of 0.4 mm in thickness was employed, which was hard, strong, dimensionally stable, and very inexpensive. The procedure for making the denture plate required only one-stage forming opration ; a new method for dental use, by high energy rate forming, using explosive energy and epoxy resin die. 3) The method was not so expensive as the conventional swaging technique, and moreover it was not so troublesome.

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In view of the widely acknowledged notion that the pits and grooves of occlusal surface of a tooth are responsible for the initiation of tooth caries, a clinical and statistical study was conducted on apparently healthy 1st molar teeth in lower jaws of 7-year-old children of both sexes to see the rate of possible inhibition of caries development by filling these anatomical depressions with the resin adhesives, ethylcyano-methacrylate monomer and methylmethacrylate polymer. The results were summarized as follows. No increase in the rate of DMFT by the 3rd month, but the 8th month after the filling the male group of the subjects developed 1.9 percent increase and the female group 3.2 percent increase. DMFT rate in the control group with non-filled teeth increased by 0.9 percent in the male, 7.5 percent in the female groups respectively by the 3rd month and by 4.6 percent in the male, 11.3 percent in the female groups respectively by the 8th month. The present study showed that this procedure proved very efficient in suppressing the tooth caries development, provided that care was taken to remove as much debris as possible from the pits and grooves of the tooth occlusal surface and keep them clean and disinfected before they were filled with these materials.

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We have experienced a case of odontom. Its lesion occurs on the part of |3^^- in 27 yearsold man, and has a size of the tip of an index finger. It was diagnosed clinically and patho-histologically as a compound composite odontom. Utilizing the past reports in Japan, we have statistically studied the frequency of odontom with respect to sex, age, location and classification.

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The authors reported a case of 26 year-old woman with cleidocranial dysostosis about her physical examination and oral-surgical and orthodontic treatment. The general findings of the present patient were as follows : deficient closure of anterior fontanel and posterotemporal fontanel, partial defect of right clavicle, hypoplasia of maxilla and nasal bone, slight prognathism of mandible, delayed or failed eruption of permanent teeth, impacted teeth with many suppernumerary teeth and failure of symphysial closure. Chromosomal analysis made by the peripheral leukocyte culture technic in the present patient showed 46, XX, Gp^+. As a result of the authors' oral-surgical and orthodontic treatment, twelve impacted teeth erupted partially.

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An autopsy case of 47 year-old woman suffered from malignant hemangioendothelioma of the right mandibular bone was presented. Patho-anatomical findings were as follows : 1) malignant hemangioendothelioma of right mandibular bone. 2) metastasis ; left maxillary bone, cranium, sterum, vertebrae, ribs, left humerus, ilium, pubic bone, ischium, femurs, tongue, right submaxillary gland, right parotid gland, liver, spleen, kidneys, pancres, adrenal glands, cerebrum, meninges, and lymph nodes. 3) cardiac hypertrophy and pedunculated thrombus in the right auricle. 4) pulmonal hemorrhage and congestion. 5) nephrosis. 6) gastric ulcer. Histologically, the tumor cells showed vasoformative structure. Such vasoformative tumor cells forming the canals were round, polygonal or spindle cells of varying size with hyper chromatic and often bizarre nuclei. Mitotic figure were numerous and included many abno rmal forms.

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