The Apical Border Plaque in Severe Periodontitis. An Ultrastructural Study
作者： Theofilos P. Vrahopoulos , Pauline M. Barber , Hubert N. Newman
DOI: 10.1902/JOP.1995.66.2.113
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摘要: This study concerns the apical border (AB) plaque in relation to severe forms of periodontitis (SP), including juvenile, post-juvenile, and rapidly progressing periodontitis. Twenty-four (24) teeth from 16 patients with SP were examined by transmission electron microscopy (TEM). The AB was not discrete, islands bacteria so-called plaque-free zone (PFZ). Coronal established consisted a layer Gram-positive cocci ghost cells superficial mainly Gram-negative morphotypes, cocci, rods, filaments, fusiforms, spirochetes. most apparently intact organisms PFZ bacterial or isolation predominantly abundance. Ruthenium red, alcian blue-lanthanum nitrate, safranin O used label matrix polyanionic macromolecules, periodic acid (thiosemicarbazide) silver proteinate for intracellular polysaccharide (IPS). components mainly...
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