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Volume 4, Issue 1
Displaying 1-13 of 13 articles from this issue
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Yoshisuke Okura1955 Volume 4 Issue 1 Pages 1-7
Published: January 10, 1955
Released on J-STAGE: September 07, 2011
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Hajime Hayasni1955 Volume 4 Issue 1 Pages 8-18
Published: January 10, 1955
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSA clinical and bacteriological investigation of dental pulps of non-carious teeth in various conditions was performed with following results.
1) No microorganism was found in dental pulps of 25 intact teeth.
2) Only 9 cases of 50 pyorrheal teeth yielded positiv cultures. Streptococcus viridans was found in 7 cases, and Staphylococcus albus in 2 cases.
3) In 7 cases of 36 lower 3 rd molars accompanied by pericoronitis, Streptococcus viridans was found.
4) Of 58 teeth in acutely inflamed area of jow bone, 32 teeth yielded positive cultures. Among them Streptococcus viridans was identified in 15 cases, and Staphylococcus albus in 17 cases. Namely a majority of the cases were infected.
In view of these results, it is conceivable that even though the teeth in acutely inflamed area of jaw bone are not carious, a majority of them will be possible sources of recurrence of inflammation or focal infection. Therefore we have to watch them strictly, and they must be under timely treatment at a proper time.View full abstractDownload PDF (1756K) -
Shingo Onoue1955 Volume 4 Issue 1 Pages 19-23
Published: January 10, 1955
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESS1) As to the width of dentinal tubules of human teeth (central incisor and lateral incisor), it was proved to be narrower in tubules of people of older-age strata than in tubules of younger-age strata. However, this declining did not make gradual progress in complete parallel with the growing of age, but shaped step-by-step progress. The strata of human ages which shaped these steps of progress were those of 20-30's, and of 60's. This did not always apply to every case, but sometimes the step was 20-30's showing the declining, and no farther declining progress was shown until 70's. We have, that is to say, varying steps depending on the case, which appear one sometimes or two some other times.
2) Dentinal tubules in the outer part of dentine showed almost no difference in its width by the stratum of our age.
3) Width of dentinal tubules was proved to be getting narrower, according as it went to the outer part of dentine.View full abstractDownload PDF (473K) -
Tatsuya Okumura1955 Volume 4 Issue 1 Pages 24-28
Published: January 10, 1955
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESS1) The counts of lactobacilli in saliva were examined in 20 cases of the pregnant and in the same number of the non-pregnant, who, in both cases, have no carious tooth or one or more.
2) In the cases with carious teeth, the average number of bacilli counts made no great difference between the pregnant and the nonpregnant.
3) In the cases without carious teeth, the average number of bacilli counts in the pregnant showed twice as much as that in the non-pregnant. This fact will apparently indicate that the oral cavities of the pregnant are “ contaminated ”.
4) The fluctuation of bacilli counts after delivery showed a considerable change in the same individual, but generally speaking, gradual decrease in bacilli number seems to begin in 5 or 6 days after delivery.View full abstractDownload PDF (634K) -
Tatsuya Okumura1955 Volume 4 Issue 1 Pages 29-34
Published: January 10, 1955
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESS1) The counts of oral lactobacilli of new born babies, sucklings before dentition, infants with or without caries or the infants living in the area of fluorine-supply through the waterworks were made.
2) In the new born babies, the bacilli appeared 1 hour after birth.
3) The detection rate of bacilli seemed to be higher in the sucklings before dentition, who are fed with mother's, artificial or mixed milk. This seems to indicate that the lactose in milk promote the development and multiplication of bacilli.
4) The bacilli were also detectable in the most cases of the infants with caries, but in these cases the count of bacilli was not always proprotional to the number of carious teeth.
5) The bacilli were not detectable in 57.6% of the infants without carious teeth, and even in the cases in which the bacilli were detectable, the counts were 20 or so.
6) In comparing the infants living within the limit of fluolinesupply through the waterworks with those living without this limit, no difference between the counts of lactobacilli in the two groups was seen. This will indicate that the fluoline-supply has no remarkable effect on the oral lactobacilli.View full abstractDownload PDF (714K) -
Tatsuya Okumura1955 Volume 4 Issue 1 Pages 35-38
Published: January 10, 1955
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESS1) The inhibiting power of D.H.A.-salt for the multiplication of oral acidogenic bacilli was studied experimentally by using the culture mediums which were made by adding D.H.A.-salt to 2% tomatojuice glucose agar at a dilution of 2000, 1000 or 800 fold.
2) 14 of 20 cases in saliva and 5 of 7 case in softened dentine showed the decrease of bacilli counts according as the concentration of D.H.A.-salt increased.
3) The above mentioned facts show that D.H.A. inhibits the multiplication of oral acidogenic bacilli.View full abstractDownload PDF (602K) -
Eiji Yoshida1955 Volume 4 Issue 1 Pages 39-67
Published: January 10, 1955
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSRegular daily stripes (periodic pattern) visible in rabbit dentine are varied by the influence of various systemic changes. And serum calcium is considered to be related same way to the change of this stripe figure of calcification. By various procedures, the author succeeded in artificially making the stripes distinct, and attempted to elucidate relation between the stripes and serum Ca.View full abstractDownload PDF (27566K) -
Y. Fujioka1955 Volume 4 Issue 1 Pages 68-72
Published: January 10, 1955
Released on J-STAGE: September 07, 2011
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Teruo Nishi1955 Volume 4 Issue 1 Pages 73-77
Published: January 10, 1955
Released on J-STAGE: September 07, 2011
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Noboru Matsuda1955 Volume 4 Issue 1 Pages 78-82
Published: January 10, 1955
Released on J-STAGE: September 07, 2011
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S. Ota, M. Hada, S. Tanaka1955 Volume 4 Issue 1 Pages 83-86
Published: January 10, 1955
Released on J-STAGE: September 07, 2011
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Yoshitoshi Yamagata1955 Volume 4 Issue 1 Pages 87-93
Published: January 10, 1955
Released on J-STAGE: September 07, 2011
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Shoji Tomita1955 Volume 4 Issue 1 Pages 94-95
Published: January 10, 1955
Released on J-STAGE: September 07, 2011
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