@article{oai:mdu.repo.nii.ac.jp:00002462, author = {赤羽, 章司 and 中村, 武 and 赤羽, 章司 and 中村, 武 and 志村, 隆二 and 中嶌, 哲 and 千野, 武廣}, issue = {1}, journal = {松本歯学, Journal of the Matsumoto Dental University Society}, month = {Apr}, note = {application/pdf, To study the relationship of the origin, development, and enlargement of salivary calculi to bacterial calcification, electron microscopic and bacteriological examinations of a calculus extracted from a child were made. Results obtained were as follows: 1. Cocci-like and filamentous microbiota-like structures, bearing needle crystals, were observed to adhere to the surface of the calculus and/or to exist immediately in the vicinity of the surface of the calculus. They were also found inside the calculus. 2. Two bacterial species, identified as Streptococcus sanguis and Corynebacterium pseudodiphtheriticum, could be isolated from the calculus. 3. Both isolated species formed needle crystals in vitro within the cell from which calcium and phosphate were detected by elementary analyses, demonstrating that the two bacterial species possess calcification activity. 4. These isolated bacteria may contribute to the formation of salivary calculi.}, pages = {49--57}, title = {唾石細菌とその石灰化能に関する電子顕微鏡的研究}, volume = {14}, year = {1988} }