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The pulse at the Cun and Guan positions of the left hand is flooding, rapid, or wiry and tense, indicating wind-heat in the intestines and stomach, with symptoms of toothache.
If the Chi pulse is flooding yet empty, it indicates Kidney deficiency, primarily manifesting as loose and sparse teeth, with pain caused by Ministerial Fire (deficient fire of the Kidney) flaming upward.

Zhu Danxi stated: Tooth swelling and pain, whether accompanied by loosening or bleeding, all belong to Heat syndromes; one should purge Stomach Fire. In cases of Stomach Excess syndrome, Tiaowei Chengqi Tang (Regulating the Stomach Decoction) can be used with added Coptidis Rhizoma (Huanglian), Gypsum Fibrosum (Shigao), Bupleuri Radix (Shengma), Angelicae Dahuricae Radix (Baizhi), Saposhnikoviae Radix (Fangfeng), Schizonepetae Spica (Jingjie), Menthae Haplocalycis Herba (Bohe), Platycodonis Radix (Jiegeng), and Glycyrrhizae Radix et Rhizoma (Gancao). Externally, Sishen San (Four Divine Powder) mixed with Terminalia chebula resin (Wutonglü) can be ground and applied to the area, or Musk (Shexiang) can be added.

The Classics state: When a person reaches forty, Yin Qi naturally halves. It is also said: At around fifty (five times eight), Kidney Qi declines, hair falls out, and teeth become dry. This shows that upon reaching forty, one must urgently tonify the Kidney and strengthen the teeth without delay. If consolidation and nourishment are maintained before damage occurs, there will be no destruction. The I Ching says: "If nourishment is obtained, nothing does not grow; if nourishment is lost, nothing does not perish." This is exactly what is meant!

Taiping Shenghui Fang states: Those who fear cold water have Heat-type toothaches and should be treated with Natrii Sulfas (Yaxiao), Curcumae Longae Rhizoma (Jianghuang), Realgar (Xionghuang), and Schizonepetae Spica (Jingjie). Those who fear hot water have Cold-type toothaches and should be treated with Zingiberis Rhizoma Recens (Ganjiang) and Piperis Kadsurae Fructus (Bibo). Those who fear neither cold nor heat have Wind-toothaches, treated with Gleditsiae Sinensis Fructus (Zhuyazaojiao), Bombyx Batryticatus (Jiangcan), Vespa Nidus (Fengfang), and Aconiti Lateralis Radix Preparata (Caowu). Those with holes have dental caries (worm teeth), treated with Realgar (Xionghuang), Calcined Stone (Duanshi), and Sugar (Shatang). After applying medication, rinse with warm water.

My fellow townsman, Song Wang Chengxiang's concubine, loved rich and strong flavors. One day, severe heat toxicity erupted, causing flesh to protrude from between the teeth, gradually swelling until her mouth could not close, preventing even water or gruel from entering. A physician treated her, and she recovered in a few days. The method involved using one bowl of Rehmanniae Radix Preparata (Shengdihuang) juice, taking several pods of Gleditsiae Sinensis Fructus (Yazaojiao), heating them over fire, dipping them into the juice until absorbed, grinding them into powder, and applying it to the swollen flesh, which immediately subsided.

Teeth damaged due to lack of care, such as being struck, falling, biting hard objects, or chewing heavy items, are all external causes and cannot be cured by medicine alone. Wise individuals must be cautious about this.

(From Heji Jufang) Qingwei San (Clear the Stomach Powder): Treats toothache caused by excessive Heat in the Yangming channel, or headache radiating to the teeth due to taking hot-natured medicines.
Moutan Cortex (Mudanpi), Cimicifugae Rhizoma (Shengma) (1 qian each); Angelicae Sinensis Radix (Danggui), Rehmanniae Radix Preparata (Shengdihuang), Coptidis Rhizoma (Huanglian) (1.5 qian each).
Take as one dose, decoct in two zhong of water until reduced to 0.8 zhong, and take warm after meals.

(From Jingyan Fang) Yuchi San (Jade Pool Powder): Treats toothache caused by wind and caries, with swollen and itching gums, loose teeth, gum ulceration and bleeding, hot gums, and foul odor.
Angelicae Sinensis Radix (Danggui), Ligusticum Chuanxiong Rhizoma (Chuanxiong), Saposhnikoviae Radix (Fangfeng), Angelicae Dahuricae Radix (Baizhi), Ligustici Chuanxiong Rhizoma (Ben), Asari Radix et Rhizoma (Xixin), Cimicifugae Rhizoma (Shengma), Phellodendri Amurensis Cortex (Digupi), Sophorae Flavescentis Flos (Huaihua), Glycyrrhizae Radix et Rhizoma (Gancao) (equal parts).
Coarsely crush the herbs. Take 5 qian per dose, decoct in two zhan of water with 20 black soybeans and 3 slices of ginger until reduced to one zhan, then strain. Take at any time, swish and spit out; swallowing is also acceptable.

(From Miyan Fang) Qingwei Yin (Clear the Stomach Decoction): Treats all types of toothache caused by wind-heat, dampness, and phlegm, with swollen gums, bleeding, and loose teeth.
Angelicae Sinensis Radix (Danggui), Rehmanniae Radix Preparata (Shengdihuang), Scutellariae Radix (Huangqin), Gypsum Fibrosum (Shigao) (1 qian each); Cimicifugae Rhizoma (Shengma) (0.5 qian); Paeoniae Radix Alba (Baishaoyao), Tangerine Peel (Qingpi), Coptidis Rhizoma (Huanglian) (0.8 fen each); Glycyrrhizae Radix et Rhizoma (Gancao), Moutan Cortex (Mudanpi) (0.4 fen each); Gardeniae Fructus (Zhizi), Atractylodis Rhizoma (Cangzhu) (1 qian each); Asari Radix et Rhizoma (Xixin), Pogostemonis Herba (Huoxiang), Schizonepetae Spica (Jingsui) (0.6 fen each).
Decoct in two zhong of water until reduced to 0.8 zhong. After meals, slowly hold in the mouth and swallow for best effect.

(From Li Dongyuan) Shengong Wan (Divine Merit Pill): Treats bad breath due to excessive meat consumption, dental caries, and receding gums with bleeding.
Pogostemonis Herba (Huoxiangye), Angelicae Sinensis Radix (Dangguishen), Aucklandiae Radix (Muxiang), Cimicifugae Rhizoma (Shengma) (1 qian each); Rehmanniae Radix Preparata (Shengdihuang, washed with wine), Glycyrrhizae Radix et Rhizoma (Gancao) (3 qian each); Coptidis Rhizoma (Huanglian, washed with wine), Amomi Fructus Rotundus (Suosharen) (5 qian each).
Grind into fine powder, mix with steamed bread dough soaked in decoction to form pills the size of mung beans. Take 100 pills per dose, up to 200, on an empty stomach with plain boiled water. This medicine also treats metrorrhagia, bloody dysentery, and persistent lower bleeding with brown, purple, or black blood, as well as intestinal bleeding. Take on an empty stomach with rice soup. It is effective for flooding and slow pulses, numbness, rising Qi and Blood, rebellious Qi ascending, and hallucinations.

Lixiao Bingzi (Instant Effect Cake): Treats all wind and worm toothaches with unbearable pain.
Alpiniae Officinarum Rhizoma (Liangjiang), Aconiti Lateralis Radix Preparata (Caowu), Ligusticum Chuanxiong Rhizoma (Chuanxiong), Piperis Kadsurae Fructus (Bibo), Piperis Longi Fructus (Hujiao) (equal parts).
Grind into fine powder, bind with wine paste into pills the size of Chinese tallow tree seeds, and shape into cakes. Place one cake on the affected area to bite; relief comes immediately upon salivation.

Bi Yao (Nasal Medicine): Treats various toothaches.
Realgar (Xionghuang) (1 qian), Boswelliae Resina (Ruxiang), Myrrhae Resina (Moyao) (0.5 fen each).
Grind into fine powder. For right-sided toothache, blow into the left nostril; for left-sided toothache, blow into the right nostril. There are four methods for treating toothache; using this ensures recovery. First use nasal insufflation, then rinsing, then application, and finally oral medication according to the syndrome. This constitutes the simultaneous application of four treatments.