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A Case of Periodontal Polyp, Clinically Resembled to Pulp Polyp
Get PDFA 16-year-old boy was referred to the Department of Oral Surgery II, Matsumoto Dental College, for the treatment of a painless pulpoid polyp at the right mandibular first molar. Histopathologic findings from resected specimen showed that the polyp was surrounded by stratified squamous epithelium and that the neck was situated at the perforated portion of floor of pulp chamber and had been broken due to extraction. Root canal polyp in the distal root was covered with stratified squamous epithelium and did not connect with the polyp. It was diagnosed as periodontal polyp, based upon these histopathologic findings
In this study, the author surveyed the fauna of bumblebees at Kaoryanse park in Kitami-shi from 12nd May to 12nd November 2014 (total 31 days). The author observed Bombus terrestris (L.), that the introduced bumblebees, and B. hypocrita sapporoensis (Cockerell), B. deuteronymus deuteronymus (Schulz), and B. yezoensis Matsumura, that the indigenous at the surveyed area. The total numbers and distribution ratios of observed bumblebees were 384; 74.5%, 88; 17.1%, 36; 7.0% and 7; 1.4%, collectively. B. terrestris was observed all study periods, however the indigenous bumblebees were not obserbed until latter September to first October. Since the numerous observed numbers and the length of observed periods, B. terrestris is considered the dominant bumblebee species at this study site. It is needed to continue the survey of the fauna of bumblebees, and the monitoring the relationship between introduced and indigenous bumblebees in this area.
Get PDF 本研究では、2014年５月12日から2013年11月12日（合計31日）にかけて、北見市の香りゃんせ公園におけるマルハナバチ相の調査を行った。その結果、外来種であるセイヨウオオマルハナバチおよび在来種のエゾオオマルハナバチ、ハイイロマルハナバチ、エゾナガマルハナバチが確認できた。総観察数および構成比率はそれぞれ、384頭；74.5％、88頭；17.1％、36頭；7.0％、７頭；1.4％であった。セイヨウオオマルハナバチは全期間で観察されたが、在来種は９月後半から10月前半まで観察された。観察頭数および活動期間の長さから、セイヨウオオマルハナバチは本調査地における優占種であるといえる。今後もこの地域におけるマルハナバチ相の調査を継続し、セイヨウオオマルハナバチと在来マルハナバチの関連を調べる必要がある
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