Verhandlungen des XInternationalen medicinischen congresses, Berlin, 1890 . of cilia would to my mindnecessitate the existence of a cavity in which they would be free toperform their usual function of vibration. Also in my case where thecolumnar cells pass into the outer wall of the cyst they becomealtered in appearance and lose their cilia. In conclusion 1 think this case is of interest as bearing uponthe etiology of multilocular cystic tumors. The presence of epitheliumin the root membrane of teeth, which under suitable circumstancesmay become ciliated, would account for these cas
Verhandlungen des XInternationalen medicinischen congresses, Berlin, 1890 . of cilia would to my mindnecessitate the existence of a cavity in which they would be free toperform their usual function of vibration. Also in my case where thecolumnar cells pass into the outer wall of the cyst they becomealtered in appearance and lose their cilia. In conclusion 1 think this case is of interest as bearing uponthe etiology of multilocular cystic tumors. The presence of epitheliumin the root membrane of teeth, which under suitable circumstancesmay become ciliated, would account for these cases as well as thespecial ingrowths of oral epithelium which Mr. Eve considers as theusual manner in which they arise, and to which I can also testifyfrom my own observations on gum polypi. — The accompanying illustrations are photomicrographs which I madefrom my preparations. I. A low-power view of the cyst, showing its lining of epithelium;the end of the root may also be noticed covered with A portion of the epithelium under a higher power showing 106 Abtheilung XIV: Zahnheilkunde. • - > i SSHrwSflli ft™S28 ShINt- \**£^{ Us k - p • ?v3?^ ?EL- By 6k.»\ Of WJsM K *. - - Btfxff^ ? II. Hr. Busch (Berlin): Ueber Verwachsung und Zwillingsbildung der Milchzahne und der bleibenden Zahne. Eine Verwachsung zweier Zahne liegt dann vor, wenn zwei nor-male Zahnkeime mit einander verwachsen, sei es nun, dass diese Ver-wachsung noch zu derjenigen Zeit erfolgt, in welcher die Bildung derZahne stattfindet, oder dass die vollkommen ausgebildeten Zahne nach-traglich dadurch mit einander verwachsen, dass die Cementumhiillungenihrer Wurzeln mit einander verschmelzen. Eine ZwiHigsbildung er-fordert einen iiberzahligen Zahnkeim. Derselbe kann entweder fur sichgetrennt erscheinen und wird dann einfach als uberzahliger Zahn be-zeichnet, oder er kann mit dem normalen Keim, von dem er sich ab-spaltet, verwachsen, und dann liegt derjenige Zustand vor, welchen
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Keywords: ., bookcentury1800, bookdecade1890, bookidverha, booksubjectmedicine
