齿者，骨之所终，而髓之所养也，小儿禀受肾气不足，不能上营而髓虚，不能
充于骨，又安能及齿，故齿久不生也，地黄丸主之。一小儿三岁，言步未能，齿
发尤少，体瘦艰立，发热作渴，服肥儿丸不应。余曰此肾虚疳证也，盖肥儿丸脾胃
经之药，久服则肾益虚，其疳益甚。不信，牙发渐落。令用地黄丸加鹿茸、五味子，
半载而元气壮健。一小儿体瘦腿细，行步艰辛，齿不坚固，发稀短少。用六味地
黄丸、补中益气汤年余，诸证悉愈，形体壮实。
〔张涣〕香附丹 治齿不生。
大香附子（拣净，刮去皮） 沉香（各一两） 雄鼠粪（烧灰） 干蟾（烧灰） 槟榔（各半两）
上件捣，罗为细末，用羊髓四两煮烂和成膏，如黍米大。每服十粒，麝香汤下，量儿大小加减。
〔汤氏〕芎黄散 治小儿齿不生。
大川芎 生地黄（各半两） 山药 当归 甘草（炙。各一分）
上焙，为末，热汤调服。或时以药末擦齿龈。
《千金翼方》 溺坑中竹木，主小儿齿不生，正旦刮涂之，即生。
《外台·短剧》又方 取雌鼠屎三七枚，以一枚拭齿根处，尽此止，二十一日齿当生。
雌鼠屎，头尖是也。《千金》同。《杨氏产乳方》用三十枚，仍云雌粪，用两头丸者是。
《圣惠》治小儿齿不生，或因落不生方
上取牛粪中黑豆二七枚，小开去头上皮，以此豆头开处，注齿根上，时时用之，
当效也。
牙齿，是骨骼的终点，由骨髓滋养。小儿先天禀受的肾气不足，不能上达濡养头部，导致髓海空虚，无法充盈骨骼，又怎能促使牙齿生长呢？因此牙齿迟迟不生，应当用地黄丸主治。有一个三岁的儿童，说话和走路都还不会，头发和牙齿尤其稀少，身体消瘦，站立困难，伴有发热和口渴的症状，服用肥儿丸没有效果。我说这是肾虚兼疳证。因为肥儿丸是治疗脾胃经疾病的药物，长期服用会使肾气更加虚弱，疳积症状也会加重。家长不信，结果孩子的牙齿和头发逐渐脱落。后来改用加有鹿茸、五味子的地黄丸，半年后元气恢复壮健。另一个儿童身体消瘦，腿部纤细，行走艰难，牙齿不坚固，头发稀疏短少。使用六味地黄丸、补中益气汤治疗一年多，所有症状全部痊愈，形体变得壮实。
〔张涣〕香附丹 治疗牙齿不生。
大香附子（挑选干净，刮去外皮） 沉香（各一两） 雄鼠粪（烧成灰） 干蟾（烧成灰） 槟榔（各半两）
以上药材捣碎，过筛成为细末，用羊髓四两煮烂调和成膏剂，大小如黍米。每次服用十粒，用麝香汤送下，根据儿童年龄大小增减剂量。
〔汤氏〕芎黄散 治疗小儿牙齿不生。
大川芎 生地黄（各半两） 山药 当归 甘草（炙。各一分）
以上药材焙干，研为粉末，用热开水调服。或者偶尔将药末涂抹擦拭牙龈。
《千金翼方》 溺坑中的竹木，主治小儿牙齿不生，在正月初一刮取涂擦，牙齿就会生出。
《外台·短剧》另一方法 取雌鼠屎三七枚，用一枚擦拭齿根处，用完这枚为止，二十一天后牙齿应当长出。
雌鼠屎，头尖的是。《千金》方相同。《杨氏产乳方》用三十枚，仍注明是雌粪，用两头圆的是。
《圣惠》治疗小儿牙齿不生，或因掉落而不生的方法
以上取牛粪中的黑豆十四枚，轻轻剥开去掉头上的皮，用这颗豆剥开的一端，注在齿根上，经常使用，应当见效。
Teeth are the culmination of bones and are nourished by marrow. If a child has insufficient congenital Kidney Qi, it cannot ascend to nourish the head, resulting in empty Marrow Sea, which fails to fill the bones; how can it then promote tooth eruption? Therefore, delayed tooth eruption occurs, and Dihuang Wan (Rehmannia Pill) should be primarily used. A three-year-old child could neither speak nor walk, with particularly sparse hair and teeth, emaciated body, difficulty standing, accompanied by fever and thirst. The administration of Fei'er Wan (Flesh-Enriching Pill) was ineffective. I stated that this is a deficiency of the Kidney complicated by Gan syndrome (malnutrition). Since Fei'er Wan is a formula for the Spleen and Stomach meridians, prolonged use would further deplete the Kidney and exacerbate the Gan condition. The parents did not believe this, and the child's teeth and hair gradually fell out. Subsequently, Dihuang Wan supplemented with Lurong (Deer Antler) and Wuweizi (Schisandra Fruit) was prescribed. After half a year, the Yuan Qi (Original Qi) became robust. Another child was emaciated with thin legs, had difficulty walking, unfirm teeth, and sparse, short hair. Treatment with Liuwei Dihuang Wan (Six-Ingredient Rehmannia Pill) and Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction) for over a year resulted in the complete resolution of all symptoms and a robust physique.
[Zhang Huan] Xiangfu Dan (Cyperi Bulb Pill) treats delayed tooth eruption.
Da Xiangfu Zi (Cyperi Rhizoma, selected clean, skin scraped off), Chenxiang (Aquilariae Lignum Resinatum, each 1 liang), Xiong Shufen (Excrement of male mouse, burnt to ash), Ganchan (Bufo bufo gargarizans, burnt to ash), Binglang (Arecae Semen, each 0.5 liang).
The above ingredients are crushed and sifted into fine powder. Mix with 4 liang of Yangsui (Marrow of Ovis aries or Bos taurus), boiled until soft, to form a paste, sized like Setaria italica seeds. Take 10 pills per dose, administered with Shexiang Tang (Moschus Decoction), adjusting the dosage according to the child's age and size.
[Tang Shi] Xionghuang San (Ligusticum and Rehmannia Powder) treats delayed tooth eruption in children.
Da Chuanxiong (Ligustici Chuanxiong Rhizoma), Shengdihuang (Rehmanniae Radix, each 0.5 liang), Shanyao (Dioscoreae Rhizoma), Danggui (Angelicae Sinensis Radix), Gancao (Glycyrrhizae Radix et Rhizoma, prepared by honey-frying, each 1 fen).
The above ingredients are baked and ground into powder. Administer mixed with hot water. Alternatively, apply the powder directly to the gums occasionally.
Qianjin Yi Fang (Supplement to the Essential Prescriptions Worth a Thousand Gold) states that bamboo or wood from a latrine pit treats delayed tooth eruption in children. Scrape and apply on the first day of the New Year, and teeth will erupt.
Waitai Jianyue (External Cabinet: Short Prescriptions) another method: Take 21 pieces of Excrement of female mouse. Use one piece to wipe the tooth root area. Stop after using one piece. Teeth should erupt within twenty-one days.
The Excrement of female mouse has a pointed tip. This is consistent with Qianjin Fang. Yangshi Chanlu Fang (Yang's Obstetric and Neonatal Formulas) uses 30 pieces, specifying female excrement, and those with rounded ends at both sides are used.
Shenghui Fang (Prescriptions of Holy Grace) treats delayed tooth eruption in children, or failure to erupt after loss.
Take 14 black beans from cow dung. Gently open them to remove the skin on the tip. Apply the opened end of these beans to the tooth root repeatedly. It should be effective.