. La scienza e la pratica della chirurgia dentaria. hly forma articolata, closelyresembling il hyphomyces, o stampo funghi.Gli organismi sono tutti relativamente grande, essendo10 /J, o più di diametro ; essi sono di forma circolare, ovale o,lanceolated, e se colorate con poli- 279 cromatica lihie metilene mostra un distinctnucleus nel centro prendendo una colorazione rossa,e suriounded da Ijlue cloplasni in whichare un nuniher finemente refractile granuli. I principali rappresentanti di questo gruppo associ ated-con la patologia della bocca sono thesaccharomycrs albicans, oidio albicans, o cosiddetto tordo fungo, un

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. The science and practice of dental surgery. hly articulated form, closelyresembling the hyphomyces, or mould fungi.The organisms are all comparatively large, being10 /J, or more in diameter ; they are round, oval, or lanceolated, and when stained with poly- 279 chromatic methylene lihie show a distinctnucleus in the centre taking a red colouration, and suriounded by Ijlue cloplasni in whichare a nuniher of finely refractile granules. The chief representatives of this group associ-ated with the pathology of the mouth are thesaccharomycrs albicans, oidium albicans, or so-called thrush fungus, and sacclmroinycef! r/ingivae.The first organism is an occasional inliabitantof healthy mouths, and the writer has met withit in about one per cent of unclean mouths. Itis not common, and is rarely found in pyor-rhoea alveolaris , or aheolar osteitis. Tlie other saccharomyces is occasionallyfound in discharge of pus along the gum margins ;it has many of the cultural characteristics of thesaccharomyces neoformans of San Felice, from •••.. 4» Fig. 380.—Saccharomyces neoformans, 24 hrs.glucose agar. Gram, x 1000. which organism, however, it differs in severalimportant respects, and may, therefore, beconsidered to be a species esjiecially related totlie mouth. Saccharomyces Albicans (Oidium Albicans, Thrush Fungus).—The growth of this organismon artificial media is exceedingly characteristicIts colonics form delicate rayed masses with aminute central point, the fine filaments radiatingregularh- from the centre. It stains by Gramsmethod, and by the ordinary aniline dyes. When examined microscopically, the organ-ism is found to consist of an irregular myceliumhaving a large munber of joints ; the individualjoints are somewhat elongated, tajjered, andmany /jl in width, and at the ends show a slightlj^protruding rim. This portion of the cell takeson a deeper stain than the other part of theorganism. Tlie organism grows fairly well on ordinarylaboratory media, but nuich the bes

Parole chiave associate all'immagine

• bookcentury1900
• bookdecade1910
• booksubjectdentistry
• bookyear19