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28 PYORRHCEA ALVEOLARIS. high state of receptiveness, permitting quick effect of a solu- tion of cocaine, which should be applied immediately within the " pocket" to induce local anaesthesia. If properly applied this solution will obtund even the cementum in most cases. There is no danger of using the hot water too freely if the temperature is carefully maintained at 140° Fahrenheit. The ordinary nozzles that come with the three-ringed dental syringes are too large for the treatment of pyorrhoea alveol- aris, as they frequently cannot be inserted into the
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