Shika Kiso Igakkai zasshi = Japanese journal of oral biology最新文献_第3页

An electron-microscopic observation on the collagen fibril arrangement in the outermost layer of dog dentine as revealed by tangential sections. 电镜下切线切片显示犬牙本质最外层胶原纤维的排列。

Shika Kiso Igakkai zasshi = Japanese journal of oral biology Pub Date : 1989-12-01 DOI: 10.2330/joralbiosci1965.31.724

S Tanaka

引用次数: 0

[Numerical anomaly of teeth in mongrel juvenile dogs. Canis familiaris]. 杂种幼犬牙齿的数值异常。犬属后裔)。

Shika Kiso Igakkai zasshi = Japanese journal of oral biology Pub Date : 1989-12-01 DOI: 10.2330/joralbiosci1965.31.638

M Imamura, K Koyasu, T Ono, H Ishiguro, K Kurosu

{"title":"[Numerical anomaly of teeth in mongrel juvenile dogs. Canis familiaris].","authors":"M Imamura, K Koyasu, T Ono, H Ishiguro, K Kurosu","doi":"10.2330/joralbiosci1965.31.638","DOIUrl":"https://doi.org/10.2330/joralbiosci1965.31.638","url":null,"abstract":"As this study subjects, upper and lower dentitions of 49 mongrel dogs were used. X-ray films of the upper and lower dentitions of the dogs were taken. These films were from the collection of the Department of Pedodontics, School of Dentistry, Aichi-Gakuin University. Although the data on the sex and age of the dogs were not available, the dental ages were judged to range from the deciduous dentition to the early mixed dentition. Molars were not dealt with in this study for two reasons: 1) the molars of many of the subjects had not yet been calcified, and 2) the upper second and/or lower third molars, if present, had frequently been sacrificed when the jaws were separated. Numerical anomalies were observed in 16 dogs (32.7%). And infranumerary teeth were observed in 14 dogs (26.8%). Incidences of infranumerary teeth were higher in the secondary dentitions than in the primary ones. Most of the infranumerary teeth were found in both the upper and lower premolars, but not in the upper incisors and the upper and lower canines. Infranumerary teeth often occurred symmetrically whereas supernumerary teeth occurred asymmetrically. This investigation suggests that tendency of the reduction of the upper third premolar was considered to be caused by the reduction of the maxilla through the process of domestication. These results are inconsistent with Fujita's terminal reduction theory.","PeriodicalId":21847,"journal":{"name":"Shika Kiso Igakkai zasshi = Japanese journal of oral biology","volume":"31 6","pages":"638-46"},"PeriodicalIF":0.0,"publicationDate":"1989-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2330/joralbiosci1965.31.638","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13663705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

[Histological changes in periodontal tissues of rat molars following perforation of the pulp and its floor]. [牙髓及牙底穿孔后大鼠磨牙牙周组织的组织学变化]。

Shika Kiso Igakkai zasshi = Japanese journal of oral biology Pub Date : 1989-12-01 DOI: 10.2330/joralbiosci1965.31.627

Y Hamamoto, T Nakajima, H Ozawa

{"title":"[Histological changes in periodontal tissues of rat molars following perforation of the pulp and its floor].","authors":"Y Hamamoto, T Nakajima, H Ozawa","doi":"10.2330/joralbiosci1965.31.627","DOIUrl":"https://doi.org/10.2330/joralbiosci1965.31.627","url":null,"abstract":"Histological changes in periodontal tissues of the first maxillary molars of immature rats following perforation down through the floor of pulp chamber were observed with light and electron microscopes. One and two weeks after perforation, ovally shaped epithelial islands were frequently observed in the apical end of the roots. Cellular cementum was being formed rapidly around the islands and the amorphous layer, containing scanty collagen fibrils and microfilaments, was observed between the epithelial islands and cementum. Four and eight weeks after the treatment, the islands were embedded in the cellular cementum and undergoing degeneration. In the bifurcational area, destruction of the periodontal tissues and subsequent proliferation of epithelium derived from the gingiva were observed. The epithelial rests of Malassez were characterized by enlargement of nucleus and cytoplasm. The results indicate that inflammatory stimulation induced histological changes of the odontogenic epithelial cells and enhances the formation of cementum. The possibility that the epithelial cells are associated with the formation of cementum is also suggested.","PeriodicalId":21847,"journal":{"name":"Shika Kiso Igakkai zasshi = Japanese journal of oral biology","volume":"31 6","pages":"627-37"},"PeriodicalIF":0.0,"publicationDate":"1989-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13663704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

[A cytochemical study of lysosomal system in rat junctional epithelium after intravenous horseradish peroxidase injection]. [静脉注射辣根过氧化物酶后大鼠结上皮溶酶体系统细胞化学研究]。

Shika Kiso Igakkai zasshi = Japanese journal of oral biology Pub Date : 1989-12-01 DOI: 10.2330/joralbiosci1965.31.671

N Ayasaka, T Iijima, T Kondo, T Goto, T Tanaka

引用次数: 0

[Fine structural observations of age changes in cementocytes of human permanent teeth]. 人恒牙胶凝细胞年龄变化的精细结构观察。

Shika Kiso Igakkai zasshi = Japanese journal of oral biology Pub Date : 1989-12-01 DOI: 10.2330/joralbiosci1965.31.656

Y Ohno

{"title":"[Fine structural observations of age changes in cementocytes of human permanent teeth].","authors":"Y Ohno","doi":"10.2330/joralbiosci1965.31.656","DOIUrl":"https://doi.org/10.2330/joralbiosci1965.31.656","url":null,"abstract":"Human cementum formation is a continuous process which occurs throughout life. Young cementocytes are situated near the periodontal membrane and old cementocytes towards the cementodentinal junction. Electron microscopic observations on 110 cementocytes of human permanent teeth were carried out to analyze the morphological and morphometric changes due to ageing. Cementocytes with ageing showed a rapid decrease in the number of the cell and a gradual decrease in the size of the cell, nucleus and cytoplasm. The location of the nucleus was changed from the periodontal side to the dentinal side and was hyperchromatic. Organelles showed a decrease in the size of the mitochondria, the rough-surfaced endoplasmic reticulum and the Golgi apparatus, meanwhile showing a gradual increase in the number of vacuoles and lysosomes. The cell death with ageing showed a rapid increase in number and their lacunae contained nuclear remnants, mitochondrial-like structures and fine fibrillar materials. Two distinct types of age changes were recognized: cytoplasmic swelling with scanty organelles and pronounced vacuoles, and cytoplasmic atrophy preserving the rough-surfaced endoplasmic reticulum in the narrowing cementum lacuna.","PeriodicalId":21847,"journal":{"name":"Shika Kiso Igakkai zasshi = Japanese journal of oral biology","volume":"31 6","pages":"656-70"},"PeriodicalIF":0.0,"publicationDate":"1989-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2330/joralbiosci1965.31.656","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13663706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A comparative study of the localization of vasoactive intestinal peptide- and substance P-like immunoreactivities in the submandibular salivary glands of mice. 小鼠下颌下唾液腺血管活性肠肽和p样物质免疫反应定位的比较研究。

Shika Kiso Igakkai zasshi = Japanese journal of oral biology Pub Date : 1989-12-01 DOI: 10.2330/joralbiosci1965.31.705

A Letić-Gavrilović, S Shibaike, S Fukai, S Naruse, K Abe

{"title":"A comparative study of the localization of vasoactive intestinal peptide- and substance P-like immunoreactivities in the submandibular salivary glands of mice.","authors":"A Letić-Gavrilović, S Shibaike, S Fukai, S Naruse, K Abe","doi":"10.2330/joralbiosci1965.31.705","DOIUrl":"https://doi.org/10.2330/joralbiosci1965.31.705","url":null,"abstract":"The localization of vasoactive intestinal peptide (VIP)- and substance P (SP)-like immunoreactivities within the submandibular salivary glands (SMG) of Balb/c male mice at 4 to 5 weeks of age were investigated. Two immunocytochemical methods using polyclonal, monospecific antibodies, the indirect immunofluorescence and peroxidase-antiperoxidase (PAP), were used to elucidate the localization of VIP- and SP-like immunoreactivities in the SMG. Both VIP- and SP-like immunoreactivities were positive in the SMG of Balb/c male mice at 4 to 5 weeks of age. The VIP-like immunoreactivity was found in the dense plexuses around the salivary duct and in the small scattered nerves surrounding glandular acini, and particularly in the nerve cell bodies of the submaxillary ganglion. The SP-like immunoreactivity was conspicuously abundant in the excretory ducts with a rich supply of SP-positive nerves, but also very scanty in the acinus areas close to the striated ducts and interlobular excretory ducts. It could be conclusively observed that the localization of the VIP- and SP-like immunoreactivities were different in the submaxillary ganglion, in the nerves around blood vessels and acinus areas, but very similar in the areas of the excretory and striated duct of the SMG.","PeriodicalId":21847,"journal":{"name":"Shika Kiso Igakkai zasshi = Japanese journal of oral biology","volume":"31 6","pages":"705-11"},"PeriodicalIF":0.0,"publicationDate":"1989-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2330/joralbiosci1965.31.705","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13629393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effects of sialoadenectomy of the submandibular or sublingual glands on the body growth of the rat. 颌下腺或舌下腺涎腺切除术对大鼠身体生长的影响。

Shika Kiso Igakkai zasshi = Japanese journal of oral biology Pub Date : 1989-12-01 DOI: 10.2330/joralbiosci1965.31.753

H Katsukawa, Y Ninomiya, M Funakoshi

引用次数: 0

Effects of autonomic agents on the secretion of glycoproteins from the secretory cells of the major salivary glands in rats. 自主药物对大鼠主要唾液腺分泌细胞分泌糖蛋白的影响。

Shika Kiso Igakkai zasshi = Japanese journal of oral biology Pub Date : 1989-12-01 DOI: 10.2330/joralbiosci1965.31.697

Y Iwabuchi, C Aoki, T Masuhara

{"title":"Effects of autonomic agents on the secretion of glycoproteins from the secretory cells of the major salivary glands in rats.","authors":"Y Iwabuchi, C Aoki, T Masuhara","doi":"10.2330/joralbiosci1965.31.697","DOIUrl":"https://doi.org/10.2330/joralbiosci1965.31.697","url":null,"abstract":"The characteristics of the glycoproteins contained in the secretory segments of the three major salivary glands of adult male rats and the secretion of these various glycoproteins in response to autonomic agents were examined by micro-disc electrophoresis. Characterization of the glycoproteins showed that the acinar segments from the three major salivary glands and the segments of the convoluted granular tubules from the submandibular gland each contain characteristic species of glycoproteins. The glycoproteins characteristic of the acinus of the submandibular gland were secreted into saliva in response to carbachol or dobutamine, those characteristic of the parotid gland by carbachol, methoxamine, or dobutamine, and those of the sublingual gland by carbachol, whereas glycoproteins characteristic of the convoluted granular tubules of the submandibular gland were only elicited by methoxamine. The secretory response of carbachol, methoxamine and dobutamine, respectively, were almost completely reduced by pretreatment with atropine, prazosin and metoprolol. The relative proportions of glycoproteins secreted into the oral cavity from secretory cells of the three major glands varied significantly with the nature of the stimulant.","PeriodicalId":21847,"journal":{"name":"Shika Kiso Igakkai zasshi = Japanese journal of oral biology","volume":"31 6","pages":"697-704"},"PeriodicalIF":0.0,"publicationDate":"1989-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13663709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Culture conditions for efficient recovery of bacteria from infected dental root canals. 感染牙根管细菌有效恢复的培养条件。

Shika Kiso Igakkai zasshi = Japanese journal of oral biology Pub Date : 1989-10-01 DOI: 10.2330/joralbiosci1965.31.603

N Ando, E Hoshino, M Sato, K Kota, M Iwaku

引用次数: 5

Developmental change in activity of N-acetyl-beta-glucosaminidase and a comparison of its multiple enzyme activities in the masseter muscle of normal and dystrophic mice. 正常和营养不良小鼠咬肌n -乙酰- β -氨基葡萄糖酶活性的发育变化及其多种酶活性的比较。

Shika Kiso Igakkai zasshi = Japanese journal of oral biology Pub Date : 1989-10-01 DOI: 10.2330/joralbiosci1965.31.609

M Murayama, M Hiramatsu, M Kashimata, A Sato, K Ueda, N Maeda, M Kumegawa, N Minami

引用次数: 1