. The principles and practice of dental surgery. WITH CLASPS. 711 The second bicuspids or first molars are the most suitable teethfor clasping, so far as regards position: but if caries, or defectin shape, or the absence of Pj^ 241. these teeth prevent theiruse, the first bicuspids orsecond molars must be used,whichever may be best suit-ed to give a firm Fig. 241 the plate is rep-resented as extending to thefirst molar on each side. It not unfrequently happens that one or two inferior incisorsare missing—the result either of accident, or from absorptionof the alveoli. They may be re
. The principles and practice of dental surgery. WITH CLASPS. 711 The second bicuspids or first molars are the most suitable teethfor clasping, so far as regards position: but if caries, or defectin shape, or the absence of Pj^ 241. these teeth prevent theiruse, the first bicuspids orsecond molars must be used,whichever may be best suit-ed to give a firm Fig. 241 the plate is rep-resented as extending to thefirst molar on each side. It not unfrequently happens that one or two inferior incisorsare missing—the result either of accident, or from absorptionof the alveoli. They may be replaced by attaching the artifi-cial teeth to a narrow plate, shaped somewhat as in the upperjaw, and clasped to a bicuspid or molar on each side. The platein this case must necessarily come close to, and sometimes evenrest against, the inside of the lower teeth. Unless it fit withgreat accuracy and is firmly secured, such a partial lower pieceis very apt to cause irritation, disease and absorption of thegums and alveoli over which it Fig. 242. INCISORS AND CUSPIDS WITH CLASPS. The construction of the plate represented in Fig. 242 is uponprecisely the same principle as the preceding, the only differencebeing that the part of theplate on which the teethare mounted fills a largervacancy in the alveoj^rarch. As in the formercase, when the teeth onone side of the mouth aretoo much decayed, or areincapable of affording asecure attachment, or are missing, even this number of teethmay be held by one or two clasps on only one side of the mouth;but whenever this is done, the plate should be extended half orthree-fourths of an inch back of the tooth to which it is clasped.
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