巻号一覧
37 巻 (1987)
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37 巻, 1 号
選択された号の論文の9件中1～9を表示しています
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橋本 勝一, 宮澤 忠蔵, 清水 秋雄1987 年 37 巻 1 号 p. 2-7
発行日: 1987年
公開日: 2010/10/27
ジャーナル フリー種々の濃度の細菌の全菌体および超音波破壊菌体によるラット多形核白血球 (以下PMNと略す) 走化性についてBoyden法の変法における細胞走化性試験用チャンバーを用いて測定した。供試菌としてBacteroides gingivalis ATCC 33277, Actinomyces viscesus ATCC 15987, Escherichia coliATCC 11775およびVeiiionella parvula ATCC 10790を用いた。A. viscesusの全菌体は, ある濃度までは濃度に伴いPMN走化活性が高くなったが, それ以上は一定ないし若干低下した。B. gingivalisの全菌体においても同様に濃度に伴い活性が高くなったが, 一定濃度以上になるとその活性は著るしく低下した。B. gingivalisの超音波破壊菌体でも同様の現象が認められた。一方, B. gingivalisと同様に内毒素を有する他のグラム陰性菌のV. parvulaおよびE. coliの全菌体は, B. gingivalisとは異なり高い菌濃度においてもPMN走化性の低下を示さなかった。すなわちB. gingivalisはPMN走化性に関してA. viscosus, E. coliおよびV. Parvulaとの比較において菌体濃度に依存してPMNの走化性を阻止することが明らかとなった。B. gingivalisの本性状は, 全菌体においても認められることから菌体表層物質が示すものと思われる。抄録全体を表示PDF形式でダウンロード (855K) -
上田 五男1987 年 37 巻 1 号 p. 8-12
発行日: 1987年
公開日: 2010/10/27
ジャーナル フリー著者らは先の報告で安静全唾液の緩衝能と流出量との間に唾液pHを固定した場合, 両者間の相関関係に統計学的有意な負の相関性のあることを示した (口腔衛生会誌, 34; 193, 1984.)。そこで, 安静全唾液の緩衝能発現における無機燐酸塩濃度の役割を明らかにするため本研究を企図した。
男子歯科学生60名 (23～26歳) を対象とし, 可及的安静な条件下で全唾液を採取し, いわゆる安靜唾液の流出量, 緩衝能 (Buffer pH) および無機燐酸塩濃度の測定を行った.
唾液流出量は, 0.08～0.96ml/minの範囲に分布し, 平均値は0.33ml/minであった。全被検者の約70%の流出量が0.1～0.39ml/minの範囲に含まれた。
唾液流出量と無機燐酸塩濃度の間には統計学的有意な負の相関関係が認められた (r=-0.46, p<0.001)。しかし, 唾液流出量と緩衝能値との間には一定の関係はみられなかった。
一方, 唾液無機燐酸塩濃度と緩衝能値との間には統計学的有意な正の相関関係がみい出された (r=0.33, p<0.01)。
以上の結果は, 安静全唾液の緩衝作用発現において唾液無機燐酸塩が一定の積極的な役割を演じていることを強く示唆している。抄録全体を表示PDF形式でダウンロード (643K) -
近藤 武, 笠原 香, 中根 卓, 樋口 寿英, 安藤 三男, 村居 正雄1987 年 37 巻 1 号 p. 13-20
発行日: 1987年
公開日: 2010/10/27
ジャーナル フリーIn 1981 the Ministry of Welfare decided to start a national program of health promotion, the object of which was to establish continuous health care from the time of life in the womb, through birth, development, and aging, to the time of death. The purpose of dental health in this program was to prevent loss of teeth caused by dental diseases, especially periodontal disease among middled-aged people. In this program there were 5 experimental areas to investigate health conditions and to try new practices of health administration in the community. In 1986 we did a survey of the dental condition of 119 middle-aged people (between 39 and 44) living in Aoki village, one of 5 experimental areas east of Nagano prefecture.
The results were as follows:
1. The percentage of people treated for dental caries were 81.8% in men and 78.1% in women. The results were higher than those of the national dental survey in 1981.
2. The percentage of people having no inflammation in the gingiva was 54.5% in men and 81.3% in women. The results were higher than those of the national dental survey in 1981.
3. The percentage of people having dental calcules was 54.6% in men and 28.6 % in women. The results indicated the need for of oral prophylaxis, especially in men.
4. The mean number of lost teeth per person was 1.6 in men and 2.7 in women. In particular the loss of the second molar increased in proportion to aging.
5. The percentage of people with lost teeth and no prosthesis was 46.9% in men and 32.6% in women. People having more than 6-8 lost teeth generally suffered from malfunction of mastication.
6. The percentage of people having received treatment for dental diseases within one year prior to the date of survey was 43.6 % in men and 51.6 % in women.抄録全体を表示PDF形式でダウンロード (1544K) -
中村 康則, 桑島 治博, 岩崎 浩吉, 伊東 禧男, 増原 泰三1987 年 37 巻 1 号 p. 21-29
発行日: 1987年
公開日: 2010/10/27
ジャーナル フリーThis study was undertaken to determine if extracts from some sorts of chewing gum containing mutastein, a potent glucosyltransferase (GTase) inhibitor, have an inhibitory effect on insoluble glucan synthesis by Streptococcus mutans (S. mutans) and cellular adherence to glass. Six extracts from sucrose chewing gum and two sorts of palatinose chewing gum with or without mutastein were prepared and two S. mutans strains were cultivated in the BHI medium containing each extract. Similar experiments were also carried out using crude GTase of S. mutans 6715. Then adhesive and nonadhesive glucan products and growing cells adhering to glass in the six test mediums were determined.
It was found that insoluble glucan product, especially in adhesive glucan, and adhesive growing cells were fewer in the three mediums containing mutastein than in those without mutastein, although no obvious difference between S. mutans 6715 and B 13 was seen in the measured value. Similar results for insoluble glucan product were obtained in the experiment using crude GTase. In the experiment of in vitro plaque formation, fewer adhesive glucan and cells covered a glass rod in the medium with mutastein than in the medium without mutastein.
These results indicated that mutastein in chewing gum has a distinctly inhibitory effect on insoluble glucan synthesis and growing cells. It can be concluded from these in vitro studies that chewing of sucrose gum containing mutastein could lower dental caries due to sugar in the gum and also that palatinose gum with mutastein could prevent dental caries due to concomitant sugared foods by decreasing dental plaque formation in vivo.抄録全体を表示PDF形式でダウンロード (3526K) -
米満 正美, 鶴本 明久, 岡田 昭五郎, 佐塚 仁一郎, 高江洲 義矩, 藤井 信男, 山城 正宏1987 年 37 巻 1 号 p. 30-41
発行日: 1987年
公開日: 2010/10/27
ジャーナル フリーWe studied the correlation between caries prevalence and daily habits of schoolchidren in two rural primary schools (AGUNI and TONAKI) and one urban primary school (AKAMICHI) in Okinawa prefecture from 1982 to 1984.
The results were as follows.
1) The caries prevalence was highest in AGUNI, and lowest in TONAKI in each year.
2) AKAMICHI showed the highest values in DI-S (OHI-S) and PMA-index of anterior teeth, and TONAKI showed the lowest values.
3) By means of discriminant analysis and factor analysis, it became clear that there were the regional characteristics which correlated with the oral status of the schoolchidren. The schoolchildren of AKAMICHI whose life style was urban (they brush their teeth well, they eat between meals many times, they eat supper late and go to bed late, ……) were higher than children in the other two regions in the mean scores of DI-S and PMA-index individually. The schoolchildren of AGUNI were inferior to those in the other two regions in health concepts (for example, they take a bath fewer times, and they brush their teeth fewer times.). The schoolchildren of AGUNI also did not have regular rhythm in their daily habits. This might be one of the reasons that the oral status of schoolchildren in AGUNI was worse than those in TONAKI.
4) The means of the fluoride concentration in drinking water were 0.3 ppm (TONAKI), 0.03 ppm (AGUNI), and 0.07 ppm (AKAMICHI).
5) There were no differences among the fluoride concentrations in the enamel surface of primary teeth in the 3 regions.抄録全体を表示PDF形式でダウンロード (2168K) -
品田 佳世子1987 年 37 巻 1 号 p. 42-56
発行日: 1987年
公開日: 2010/10/27
ジャーナル フリーThis study was carried out to investigate whether c. w. (continuous wave) Nd: YAG laser irradiation might increase acid resistance of enamel in extracted rat molars and prevent dental caries in rats in vivo.
The laser was directed on to the normally erupted or prematurely exposed upper left first molars of rats. The upper right first molars of the same animals served as controls.
The acid resistance of enamel was increased by laser irradiation in the normally erupted and prematurely exposed teeth. The normally erupted teeth gained more acid resistance than the prematurely exposed teeth.
Laser irradiation twice (once a day for two days) effective by reduced dental caries in the normally erupted teeth as compared to the control side. The same dose of irradiation on the prematurely exposed teeth, however, failed to reduce dental caries significantly. Irradiation four times (once a day for four days) reduced dental caries on the prematurely exposed teeth significantly. Laser irradiation after the treatment with 2% NaF on the prematurely exposed teeth inhibited dental caries incidence significantly, compared with NaF treatment or laser irradiation only. These results suggest that c. w. Nd: YAG laser irradiation is effective in preventing dental caries.抄録全体を表示PDF形式でダウンロード (2746K) -
2. 都道府県別にみた一人平均齲歯数の推移長田 公子, 片山 剛, 氏家 高志, 岡田 昭五郎1987 年 37 巻 1 号 p. 57-62
発行日: 1987年
公開日: 2010/10/27
ジャーナル フリーTime-related trends in the prevalence of dental caries in 3-year-old Japanese children were determined by employing the Annual Statistics of Dental Health Checkup for 3-year-olds, extending over a span of two decades from 1963 to 1983 by prefectures. Geographic distribution of caries prevalence was compared at two-year intervals in computing mean numbers of dmf primary teeth. A significant increase in mean dmf was statistically observed during the first decade (1963-1972) without any consistent geographic variations. A substantial decline of caries experience among 3-year-old children has been seen since 1975 throughout the country, but marked geographic difference in caries prevalence has remained. Caries prevalence was much higher in the regions of Hokkaido, Tohoku, Kyushu, and Okinawa, ranging from 4.1 to 5.9 dmf per child, as compared to the nationwide figure of mean dmf (3.4) in 1983.抄録全体を表示PDF形式でダウンロード (1966K) -
可児 瑞夫, 可児 徳子, 飯野 新太郎, 広瀬 晃子, 磯崎 篤則, 伊川 英二, 奥野 雅典, 加藤 裕久1987 年 37 巻 1 号 p. 63-71
発行日: 1987年
公開日: 2010/10/27
ジャーナル フリーThe purpose of this study was to investigate the effect of ammonium titanium fluoride solution on rat caries, in comparison with that of acidulated phosphate fluoride solution (APF). Eighteen-day-old male Sprague-Dawley rats were randomly distributed among three groups. Each animal was infected with S. mutans GS-5 for three days and fed a cariogenic diet (Diet 2000 No. 3) during the experimental period. The first group received APF (0.9 % of F, pH 3.4), the second group received (NH4) 2TiF6 (0.9 % of F, pH 3.4), and the third group served as a control. Each animal was weighed, and given topical application of the solution once a week under anaesthesia. At 54, 68, 82 and 96 days of age, animals were killed, and caries prevalence was examined by assigning occlusal fissure lesions to 6 grades using a standardized photograph (x 50) of the rat jaw. Caries score (caries incidence and caries extent) were calculated from these data. The distributions of calcium, phosphorous, fluoride and titanium in enamel were determined by electron microprobe analysis.
Caries incidence was not clearly reduced in the fluoride groups compared with the control. However, significantly lower value of caries extent was found in the fluoride groups than in the control. The fluoride groups had very few serious grades of lesion, whereas the control had many collapsible lesions. There was no significant difference between the effect of APF and (NH4) 2TiF6 An enriched zone of fluoride and titanium was observed at the entrance of enamel fissures in the group treated with (NH4) 2TiF6, but at the bottom of enamel fissures, fluoride and titanium were difficult to detect. During the experimental period, the treatments did not affect the weight gains of the rats in any group. It is concluded that the topical application of (NH4) 2TiF6 leads to uptake of fluoride and titanium into the enamel surface in vivo, and is as effective in preventing caries in rats as APF, especially in inhibiting caries progression.抄録全体を表示PDF形式でダウンロード (2964K) -
篠宮 眞琴, 三谷 恵子, 北村 信子, 中垣 晴男, 榊原 悠紀田郎1987 年 37 巻 1 号 p. 72-73
発行日: 1987年
公開日: 2010/10/27
ジャーナル フリーPDF形式でダウンロード (1920K)
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