General and dental pathology with special reference to etiology and pathologic anatomy; a treatise for students and practitioners . sitsupon buccal and part of the occlusal sur-faces of an upper molar. to a deep yellow. The yellowish variety is usually the harder. Thereis a gradual increase in density from the time of the first deposi-tion until the calculus assumes a decidedly hard texture. Duringthe beginning of their formation, varying in different individualsfrom a few days to a few weeks, they are soft and may be re-moved by a thorough brushing of the teeth. In contact with thegingivae as
General and dental pathology with special reference to etiology and pathologic anatomy; a treatise for students and practitioners . sitsupon buccal and part of the occlusal sur-faces of an upper molar. to a deep yellow. The yellowish variety is usually the harder. Thereis a gradual increase in density from the time of the first deposi-tion until the calculus assumes a decidedly hard texture. Duringthe beginning of their formation, varying in different individualsfrom a few days to a few weeks, they are soft and may be re-moved by a thorough brushing of the teeth. In contact with thegingivae as they invariably are, they produce degrees of irritationAvhich lessen the power of the tissues to ward off infection, atthe same time rendering the field a favorable one for bacterialactivity. CALCAKKOlS DEPOSITS 387 Lesions in the Investing Tissues Caused by Salivary Calculi The deposition begins a1 the gingival margin, and, following a decrease in the resistance of the soft tissues by virtue of the me- chanical irritation induced by the deposit, bacteria invade the area. An inflammation follows which results eventually in a. Fig. 308.—Large masses of salivary calculi removed from the teeth to which they were attached.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpathology, bookyear19
