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Live crucian carp (one weighing ten taels), place white arsenic (one qian) inside its abdomen. Place it in a draft-free area away from cats and dogs. After seven days, white mold will grow on the fish's body.
Brush off the mold and collect it with a small amount of ointment base. Whenever toothache occurs, apply a small amount of this paste to the affected tooth; the tooth will fall out within moments.
Alternatively, soak eggplant roots in white horse urine, stir-fry until dry, and grind into powder. Apply to the gum root; the tooth will fall out almost instantly. Do not let the medicine touch healthy teeth.
Another method: crush one garlic clove, mix with prepared gypsum (Bai Long Gu, quantity unspecified in text but implied as appropriate for mixing), and apply to the painful area. The tooth will fall out within half an hour.

Crush two cloves of old garlic together with calomel (Qing Fen, one qian) until melted and uniform. Apply to Jingqu (LU8) acupoint. (Located at the wrist crease, posterior to the radial pulse, below the thumb base). Secure the area with a clam shell (or cover with another object). For males, apply to the left hand; for females, to the right hand. When a slight burning sensation is felt after a short while, remove immediately. A blister will form. Puncture the blister and wipe away the toxic fluid; this yields excellent results.
If the acupoint location is unknown, crush old garlic into a size similar to a broad bean and apply to the web between the thumb and index finger (Hegu area); this is also extremely effective.
Roast a single-clove garlic until hot, slice it, and apply as a warm compress to the painful area, replacing frequently. (This method also treats worm-induced toothache).
Boil locust tree branches to make a concentrated decoction and rub it on the gums.
Burn Achyranthes bidentata root (Niu Xi) to ash, wrap in cotton, and hold against the painful tooth.
Boil black soybeans in wine and rinse the mouth frequently.
Use calcined gypsum (Shi Gao, two liang) and alum (Ming Fan, six qian), both partially raw and partially calcined, ground into fine powder and rubbed on the teeth. This may prevent toothache permanently.
For severe pain, use Eucommia bark (Sui Bu, Du Zhong, two liang, sliced thinly with a copper knife, preferably from rocks), salt (Shi Yan, five qian), and mulberry fruit (Sang Shen Zi, five qian). Grind into a coarse residue. Brush teeth morning and evening, retain for a while, then spit out. This not only treats toothache but also strengthens teeth, benefits marrow, and removes bone toxicity. After one month, teeth will no longer loosen.
Use Sichuan pepper (Chuan Jiao, three fen), Asarum (Xi Xin, two fen; dosage must be precise, excess causes headache), and Angelica dahurica (Bai Zhi, one qian each). Soak thoroughly in boiling water. Hold in the mouth frequently, spit out after a moment, then repeat. Do not underestimate wind-fire toothache.
Use gypsum (Shi Gao, two qian) and black pepper (Hu Jiao, three grains), ground into fine powder and applied to the site; highly effective.
[Text fragment unclear: "Again old... qian ground into powder, applied twice cures." Likely refers to a previous ingredient or a missing term.]
Burn dried plum (Wu Mei) until charred but retaining nature, grind into powder. At time of use, add [unclear ingredient] and pepper powder, pack into the ear on the painful side, rest with hand covering the pillow; cure when slight sweat appears on the forehead.
Use Gardenia jasminoides fruit (Hei Shan Zhi) [method implied: likely decoction or application] to stop pain.
Mix borneol (Bing Pian) and cinnabar (Zhu Sha) in equal parts, grind into powder, and rub on the affected area.
Hold Daphne odora flowers (Rui Xiang Hua) [method implied] and rub on the affected area; effective.
Use realgar (Xiong Huang) and Myrobalan (Mo Shi Zi, one qian each), and Asarum (Xi Xin, [small amount]). Blow into the right ear; if right side hurts, blow into right nostril; if left side hurts, blow into left nostril.