Page 49 - Craventreatiseonpyorrh00crav

PYOKKIKKA ALVEOLARIS. 39 Due precautions should be taken to protect any metallic fill- ings or devices from the blackening corrosive action of nitrate of silver. Observe that the ten per cent, solution of nitrate of silver is i/""~ just short of the caustic strength. The solution of nitrate of silver is very unstable, as are all solutions of this salt in water. As it is expensive it is best that the solution be made frequently if necessary, and in small quantities. If the dentist prefers or finds it necessary to prepare his own solution of nitrate of silver, he can easily do so by weighing out six grains of the crystals and dissolving them in one dram of filtered or distilled water. Observe the solution of nitrate of silver daily, and as soon ; as flocks of black solid matter appear it is deteriorating, and should be emptied out. The solution keeps better in blue glass bottles, and must be kept tightly corked against organic particles afloat in the air. Glass stoppers are not best in bottles containing solutions of nitrate of silver ; common corks are far better. It will do no harm in any case to repeat the nitrate of silver treatment at a third sitting, although one usually suffices. After all use of nitrate of silver shall have been completed, the patient's teeth and fillings should be carefully polished free from all stains. SUBSEQUENT CARE. In most cases, after the second treatment, the patient may report in a week >. ".I* ^ -rv^encesof the disease in the "pock-