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Volume 2, Issue 4
Displaying 1-8 of 8 articles from this issue
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Y. Kawamura, K. Kishi, [in Japanese], T. Miyazaki1953 Volume 2 Issue 4 Pages 219-223
Published: 1953
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSElectrical discharges of some of the face muscles (orbicularis oris, levator labii sup., procerus) during pronounciation (a, i, u, e, o; Sa, Si, Su, Se, So) were measured in normal and cleft palate persons.
In this experiment silver surface electrodes, condenser-coupled amplifier and electromagnetic oscillograph were used.
The results were as follows;
1. In normal cases, electrical discharges of these face muscles were weak or not found. In most cases these weak discharges were only found immediately before the waves of voice recorded simultaneously.
2. In cleft palate patients, these electrical discharges were more remarkable than in cases of normal persons and these were recognized not only immediately before the occurrence of waves of the voice, but also showed the afterdischarges.
3. The electrical discharges of the procerus muscle were not recognized in both normal and cleft palate persons.
4. There were no relations between the degrees of the electrical discharges of these face muscles during pronounciation and the form of the cleft palate.View full abstractDownload PDF (2357K) -
T. Obara1953 Volume 2 Issue 4 Pages 224-230
Published: 1953
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSA piece of vinyl resin was inserted in the resected part of articular process of rabbit's mandible and the influence of resin upon the tissues around it was examined. Further using fascia of muscle in place of resin, an experiment was made as control. The results were as follows.
1) Vinyl resin exerted no specific influence upon the tissues around it.
2) Vinyl resin was unchanged in the tissues,
3) The above mentioned facts shows that vinyl resin remains harmlessly and stably in the tissues.
4) A piece of fascia of muscle which was inserted in the resected part of articular process was at first wrapped by connective tissue in the same manner as vinyl resin and then fell into necrosis after about 3 months. Thereafter it was gradually dissolved and absorbed.View full abstractDownload PDF (15787K) -
T. Terasaki, K. Shiota1953 Volume 2 Issue 4 Pages 231-237
Published: 1953
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSWe had a roentgenological study of the supernumerary teeth in the incisal regions of upper jaws, based on an examination of 1789 school children from the age of 8 to 13 years in the Department of Oral Diagnosis of ABCC at Hiroshima in the year of 1951. The subjects consist of 870 boys and 919 girlds, who were selected at random among the pupils of the grammer schools in the same city, The results were summerized briefly as follows:
1) Among the pupils examined, the fifty-three cases of supernumerary teeth were found in the incisal regions of upper jaws ; those occuring between the first and second incisors were only in the two cases, and the others were all found mesially to the first ones. (so-called “Mesiodens”)
2) The occurence of the supernumerary teeth in the incisal regions of upper jaws were distributed forty-three cases (4.96 %, 0.73 %) in males and ten (1.09 %, 0.33 %) in females ; the difference in both sexes was highly significant statistically.
3) Among sixty-one teeth found in the fifty-three cases, fifteetn ones had been erupted, but forty-six, including thirty-eight inverted teeth, were unerupted: They were found unilaterally in the forty-five cases and bilaterally in the eight cases.
4) Median diastema and other maleruptions of the permanent incisors due to the erupted or unerupted supernumerary teeth were evidenced in the twenty-eight cases.
5) The slight enlargement of tooth sac was observed on the roentgenograms of the four unerupted supernumerary teeth of our series, and one of them showed cyst formation evidently on the coronal portion of the embedded tooth.
6) The supernumerary teeth were of rudimentary form ; most cases (75.4 %) showed peg in shape and the others were turbinated.
7) Regarding the incipience of the supernumerary teeth by observing comparative state of its development with that of the permanent first incisors, the development of the supernumerary teeth were ahead of the first incisors in the thirteeth cases, a contemporary in the four cases and the retarded only in the one case among the nineteen cases, in which the root formation could be compared.
In addition, we believed that our materials regarding the shape and size of the supernumerary teeth, its position in the dental arch and the comparative state of its development with that of the permanent teeth could offer the important data on discussing the occurrence of the supernumerary teeth.View full abstractDownload PDF (1011K) -
K. Usuda1953 Volume 2 Issue 4 Pages 238-247
Published: 1953
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSpenicillin was administered to healthy persons and patients parenterally, and the concomitant levels of penicillin in the blood serum and in the saliva were measured at various intervals after administration. Further the experiments were made on the inflluence of various drugs upon the excretion of penicillin.
1) Excretion of penicillin in saliva was observed by its administration over a sertain unit.
2) When 20000-30000 units of penicillin were administered, its excretion in saliva was observed in all cases of patients (2 cases of actinomycosis, 2 cases of acute alveolar abscess, 1 case after operation of ankylosis of madibular joint) but not observed in all cases of healthy persons.
3) The concentration of penicillin in saliva was always lower than that in blood.
4) Excretion of penicillin insaliva was influenced by injection of 1% pilocarpine (0.5cc), atropine (0.5cc), 0.1% adrenalin (0.5cc), acethylcholin (0.5cc), tetraethylammonium bromide (0.5cc), 0.1% histamin (1cc), 10% peptone (1cc), 50% invert sugar (1cc) and 10% saline solution (1cc). Eventually excretion of penicillin in saliva was disturbed by those drugs except pilocarpine, histamin and peptone.View full abstractDownload PDF (1260K) -
T. Sakamoto1953 Volume 2 Issue 4 Pages 248-251
Published: 1953
Released on J-STAGE: September 07, 2011
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M. Mori1953 Volume 2 Issue 4 Pages 252-259
Published: 1953
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSDownload PDF (4348K) -
Y. Kurata1953 Volume 2 Issue 4 Pages 260-264
Published: 1953
Released on J-STAGE: September 07, 2011
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I. Yamamoto1953 Volume 2 Issue 4 Pages 265-267
Published: 1953
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSDownload PDF (6971K)
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