Continue the use of No. 3 for a few alternate days. Apply liquor
ammoniae to reduce the pain, and when that is accomplished, fill the
decayed spots with silver succedaneum without delay, or the pain will
return. A drop of creosote, or a few drops of chloroform on cotton,
applied to the tooth, or a few grains of camphor placed in the decayed
opening, or camphor moistened with turpentine, will often afford
instant relief.