如牙齿的

Inside the source apply color to develop process in the tooth in formative of, such as four wreath vegetables deposition is in the tooth essence, will make tooth yellow, brown or dark gray, be called four wreaths plain tooths;If containing fluorine in the drinking water is excessive, may also cause fluorine spot tooth, the tooth noodles presents a white chalk color, the palm tree brown spot piece;If the tooth nerve is bad clay-cold, hemoglobin and germ resolve an outcome to combine to also make tooth black.

内源性着色是在牙齿发育过程中形成的，如四环素沉积在牙本质内，就会使得牙齿变成黄色、棕色或暗灰色，称为四环素牙；如果饮用水中含氟过多，也可能导致氟斑牙，牙面呈白粉笔色、棕褐色斑块；如果牙神经坏死后，血色素与细菌分解产物结合也可使牙齿变黑。

Land, they have a body length of up to 12 meters or more, the giant killer animals to eat, there are more than 100 tons of grass-weight king, a mouth to gradually grow up to 800 teeth of ancestral Taotie; sea, They have more than the existing whales, great white shark, even the King of the sea; the sky, they have wings to start up to 12 meters wide, such as air fighter jets today.

陆地上，它们有体长可达12米以上、专吃动物的巨型杀手，有体重100多吨的食草大王，有嘴里能陆续长出多达800个牙齿的饕餮之祖；海洋里，它们有比现存的鲸、大白鲨还要大的海上霸王；天空中，它们有双翼展开可达12米、宽如今天战斗机的空中斗士。

After the teeth often hard to eat baby food such as biscuits, toast, apple slice, carrot chip, etc., in order to exercise the masticatory muscles, and promote the development of teeth and jaws. Molars after 1-year-old after grow, it should be regularly stubby eat food such as vegetables, if eaten too soft fine food, lack of masticatory muscle training, jaw can not be fully developed, but the teeth are still growing, it will lead to crowded teeth, with irregular or facial deformities.

出牙后要常给婴儿吃些较硬的食物，如饼干、烤面包片、苹果片、胡萝卜片等等，以锻炼咀嚼肌，促进牙齿与颌骨的发育。1岁以后臼齿长出后，应当经常吃些粗硬的食物，如蔬菜等，如果仍吃过细过软的食物，咀嚼肌得不到锻炼，颌骨不能充分发育，但牙齿却仍然生长，就会导致牙齿拥挤，排列不齐或颜面畸形。

Stomatology doctors found that children 7-12 years old are deciduous, the turn of the permanent teeth, tooth development as well, upper and lower dental contact some teeth too sharp, uneven teeth and maxillofacial, and the resulting high or obstacles Night is caused by the teeth of the important reasons.

口腔科医生发现，儿童在7至12岁是乳牙、恒牙的交替过程，如牙齿发育不好，上下牙颌接触时有的牙尖过高，咬颌面不平，因此造成的高点或障碍点是引起夜磨牙的重要原因。

Designed by a Pediatric Dentist for babies of 4 months and older, the Teething Ring stimulates and soothes baby's gums and allows for easier teeth eruption.

由专业儿科牙医设计，适合4个月以上的宝宝。促进宝宝牙齿和牙龈的发育，减轻宝宝出牙过程中的不适，如牙龈痒，牙床疼等症状，让宝宝的牙齿易于长出。

Taken together, these findings suggest that Bmp-4, Shh and Wnt-5a gene expressions may act together on the epithelial-mesenchymal interactions occurring in several aspects of the early mouse craniofacial development, such as odontogenesis, neuronal development, maxillae and mandible ossification, palatogenesis and tongue formation.

综上所述，这些研究结果表明，骨形态发生蛋白4， Shh和Wnt信号- 5A型基因表达共同作用，对早期小鼠颅面部的发育中上皮间的相互作用产生很大影响，如牙齿的发育，神经发展，上颌骨和下颌骨骨化及舌头的形成。

Notch1 is expressed by stem cells resided in the cervical loop epithelium, and Notch signaling pathway play a central role in fate decision of those stem cells. Notch receptors and their ligands are involved in both patterning and cell fate determination during odontogenesis. Moreover, many cell factors, which are closely related with odontogenesis, could regulate expression of Notch receptors or their ligands.

既往研究显示：早在牙齿发育期，Notch1就表达于颈环星网状层的干细胞中，是其保持干细胞性质的重要机制；Notch-Delta信号还与成釉细胞、成牙本质细胞分化有关，被认为是牙齿发育细胞分化多样性的原因之一；另外，目前已明确与牙胚细胞分化有关的生长因子如TGFβ、FGF、BMPs等均可诱导Notch受、配体的表达。

To feed an infant with animal food before it has teeth proper for masticating it, shows a total disregard to the plain indications of nature, in withholding such teeth till the system requires their assistance to masticate solid food.

养活婴儿与动物性食品在它适当的牙齿咀嚼它，显示了完全无视的平原迹象性质，如牙齿在扣留，直至系统需要的援助咀嚼固体食物。

Congenital element, because be born before, of pregnant woman hidebound, systemic sex disease, certain and familial genetic element (if the tooth is mixed,the character of jaw bone and size often affect a tooth, cause dental amlposition or jackknife to wait); Acquired element, basically be undesirable habit (consistent side sex is masticatory, buccal breath, make force of parity of tongue, lip, buccal share is destroyed, those who cause jaw growth is not not well-balanced, harmonious) with all sorts of tooth disease.

先天因素，由于出生前，孕妇的营养不良，全身性疾病，某些家族的遗传因素（如牙齿和颌骨的性状和大小常常影响牙位，造成牙齿错位或重叠等）；后天因素，主要是不良习惯（如一侧性咀嚼，口呼吸等，使舌、唇、颊部分均势力量受到破坏，导致面颌发育的不匀称、不协调）和各种牙病。

Although state regulations vary, some specific tasks dental assistants may perform include: assisting the dentist during a variety of treatment procedures; taking and developing dental radiographs; asking about the patient's medical history and taking blood pressure and pulse; serving as an infection control officer, developing infection control protocol and preparing and sterilizing instruments and equipment;helping patients feel comfortable before, during and after dental treatment; providing patients with instructions for oral care following surgery or other dental treatment procedures, such as the placement of a restoration; teaching patients appropriate oral hygiene strategies to maintain oral health;(e.g., tooth brushing, flossing and nutritional counseling); taking impressions of patients' teeth for study casts; performing office management tasks that often require the use of a personal computer; communicating with patients and suppliers (e.g., scheduling appointments, answering the telephone, billing and ordering supplies); and assisting with and helping to provide direct patient care in all dental specialties, including orthodontics, pediatric dentistry, periodontics and oral surgery.

虽然国家规定各不相同，一些具体工作牙医助手可能会执行包括：在协助处理程序的各种牙医；同时，发展牙科X光；询问病人的病史及服用降血压和脉搏；担任感染控制人员，发展infe ction控制协议，并编制和消毒仪器和设备，帮助患者感到舒服之前，期间和之后，牙科治疗；提供口腔保健指导为病人手术后或其他牙科治疗程序，如恢复的位置，；教病人适当的口腔卫生战略，以保持口腔卫生；（例如，刷牙，使用牙线和营养咨询）；考虑到病人的牙齿展示学习使人牙齿；执行办公室管理任务，往往需要使用个人电脑；与病人沟通和供应商（如：，安排约会，接电话，计费系统及订单用品）；和协助和帮助，提供直接的病人护理的牙科专业，包括矫正，儿童牙科，牙周病和口腔外科。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失