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Deciduous teeth or primary teeth, also informally known as baby teeth, milk teeth, or temporary teeth,Illustrated Dental Embryology, Histology, and Anatomy, Bath-Balogh and Fehrenbach, Elsevier, 2011, page 255 are the first set of
teeth A tooth ( : teeth) is a hard, calcified structure found in the jaws (or mouths) of many vertebrates and used to break down food. Some animals, particularly carnivores and omnivores, also use teeth to help with capturing or wounding prey, tear ...
in the growth and development of humans and other
diphyodont A diphyodont is any animal with two ss of tooth (animal), teeth, initially the ''deciduous teeth, deciduous'' set and consecutively the ''permanent teeth, permanent'' set. Most mammals are diphyodonts—as to chew their food they need a strong, dura ...
s, which include most mammals but not
elephant Elephants are the largest existing land animals. Three living species are currently recognised: the African bush elephant, the African forest elephant, and the Asian elephant. They are the only surviving members of the family Elephantidae an ...
s,
kangaroo Kangaroos are four marsupials from the family Macropodidae (macropods, meaning "large foot"). In common use the term is used to describe the largest species from this family, the red kangaroo, as well as the antilopine kangaroo, eastern ...
s, or
manatee Manatees (family Trichechidae, genus ''Trichechus'') are large, fully aquatic, mostly herbivorous marine mammals sometimes known as sea cows. There are three accepted living species of Trichechidae, representing three of the four living speci ...
s which are
polyphyodont A polyphyodont is any animal whose teeth are continually replaced. In contrast, diphyodonts are characterized by having only two successive sets of teeth. Polyphyodonts include most toothed fishes, many reptiles such as crocodiles and geckos, ...
s. Deciduous teeth
develop Develop or DEVELOP may refer to: * ''Develop'' (magazine), a trade publication for the video game industry * ''Develop'' (Apple magazine), a technical magazine formerly published by Apple Computer * Develop (chess), moving a piece from its origina ...
during the
embryo An embryo is an initial stage of development of a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male spe ...
nic stage of development and erupt (break through the gums and become visible in the mouth) during infancy. They are usually lost and replaced by
permanent teeth Permanent teeth or adult teeth are the second set of teeth formed in diphyodont mammals. In humans and old world simians, there are thirty-two permanent teeth, consisting of six maxillary and six mandibular molars, four maxillary and four mand ...
, but in the absence of their permanent replacements, they can remain functional for many years into adulthood.


Development


Formation

Primary teeth start to form during the embryonic phase of human life. The development of primary teeth starts at the sixth week of tooth development as the
dental lamina The dental lamina is a band of epithelial tissue seen in histologic sections of a developing tooth. The dental lamina is first evidence of tooth development and begins (in humans) at the sixth week in utero or three weeks after the rupture of th ...
. This process starts at the midline and then spreads back into the posterior region. By the time the embryo is eight weeks old, there are ten buds on the upper and lower arches that will eventually become the primary (deciduous) dentition. These teeth will continue to form until they erupt in the mouth. In the primary dentition, there are a total of twenty teeth: five per quadrant and ten per arch. The eruption of these teeth ("
teething Teething is the process by which an infant's first teeth (the deciduous teeth, often called "baby teeth" or "milk teeth") appear by emerging through the gums, typically arriving in pairs. The mandibular central incisors are the first primary te ...
") typically begins around the age of six months and continues until 25–33 months of age during the primary dentition period. Usually, the first teeth seen in the mouth are the mandibular central incisors and the last are the
maxillary second molar The maxillary second molar is the tooth located distally (away from the midline of the face) from both the maxillary first molars of the mouth but mesial (toward the midline of the face) from both maxillary third molars. This is true only in pe ...
s. The primary teeth are made up of central incisors, lateral incisors,
canines Canine may refer to: Zoology and anatomy * a dog-like Canid animal in the subfamily Caninae ** ''Canis'', a genus including dogs, wolves, coyotes, and jackals ** Dog, the domestic dog * Canine tooth, in mammalian oral anatomy People with the surn ...
, first molars, and second molars; there is one in each quadrant, making a total of four of each tooth. All of these are gradually replaced by similarly named permanent counterparts except for the primary first and second molars; they are replaced by
premolar The premolars, also called premolar teeth, or bicuspids, are transitional teeth located between the canine and molar teeth. In humans, there are two premolars per quadrant in the permanent set of teeth, making eight premolars total in the mouth ...
s. The erupting permanent teeth cause
root resorption Resorption of the root of the tooth, or root resorption, is the progressive loss of dentin and cementum by the action of odontoclasts. Root resorption is a normal physiological process that occurs in the exfoliation of the primary dentition. Howeve ...
, where the permanent teeth push on the roots of the primary teeth, causing the roots to be dissolved by
odontoclast An osteoclast () is a type of bone cell that breaks down bone tissue. This function is critical in the maintenance, repair, and remodeling of bones of the vertebral skeleton. The osteoclast disassembles and digests the composite of hydrated prot ...
s (as well as surrounding alveolar bone by osteoclasts) and become absorbed by the forming permanent teeth. The process of shedding primary teeth and their replacement by permanent teeth is called tooth exfoliation. This may last from six to twelve years of age. By age thirteen, there usually are only permanent teeth remaining. However, it is not extremely rare for one or more primary teeth to be retained beyond this age, sometimes well into adulthood, often because its secondary tooth failed to develop.


Function

Primary teeth are essential in the development of the mouth. The primary teeth maintain the arch length within the jaw, the bone and the permanent teeth replacements develop from the same tooth germs as the primary teeth. The primary teeth provide guidance for the eruption pathway of the permanent teeth. Also the
muscle Skeletal muscles (commonly referred to as muscles) are organs of the vertebrate muscular system and typically are attached by tendons to bones of a skeleton. The muscle cells of skeletal muscles are much longer than in the other types of muscl ...
s of the
jaw The jaw is any opposable articulated structure at the entrance of the mouth, typically used for grasping and manipulating food. The term ''jaws'' is also broadly applied to the whole of the structures constituting the vault of the mouth and serv ...
and the formation of the jaw bones depend on the primary teeth to maintain proper spacing for permanent teeth. The roots of primary teeth provide a pathway for the permanent teeth to erupt. The primary teeth are important for the development of the child's speech, for the child's smile and play a role in
chewing Chewing or mastication is the process by which food is crushed and ground by teeth. It is the first step of digestion, and it increases the surface area of foods to allow a more efficient break down by enzymes. During the mastication process, th ...
of food, although children who have had their primary teeth removed (usually as a result of
dental caries Tooth decay, also known as cavities or caries, is the breakdown of teeth due to acids produced by bacteria. The cavities may be a number of different colors from yellow to black. Symptoms may include pain and difficulty with eating. Complicatio ...
or dental injuries) can still eat and chew to a certain extent.


Caries in deciduous teeth

Dental caries, also known as tooth decay and cavities, is one of the most prevalent chronic diseases among children worldwide. This oral condition involves bacterial infection which demineralizes and destructs tooth tissues. In primary dentition, extensive tooth decay is the most common dental disease. An extensive carious lesion affects at least half of a tooth and possibly involves the pulp.


Treatment for caries in deciduous teeth

Tooth decay in primary teeth tends to progress quite quickly and often reaches the pulp of the tooth. In cases of extensive tooth decay, the pulp must be treated to maintain the health of the tooth and its supporting tissues. In pulp therapy, areas of decay and infected pulp tissue are removed, then the pulp is sealed with medicaments. Medicaments are medications placed over the pulp to maintain survival and promote repair. Treatment options include: * Indirect
pulp capping Pulp capping is a technique used in dental restorations to prevent the dental pulp from necrosis, after being exposed, or nearly exposed during a cavity preparation, from a traumatic injury, or by a deep cavity that reaches the center of the toot ...
(IPC) * Direct
pulp capping Pulp capping is a technique used in dental restorations to prevent the dental pulp from necrosis, after being exposed, or nearly exposed during a cavity preparation, from a traumatic injury, or by a deep cavity that reaches the center of the toot ...
(DPC) *
Pulpotomy Pulpotomy is a minimally invasive procedure performed in children on a primary tooth with extensive caries but without evidence of root pathology. The minimally invasive endodontic techniques of vital pulp therapy (VPT) are based on improved unders ...
*
Pulpectomy Root canal treatment (also known as endodontic therapy, endodontic treatment, or root canal therapy) is a treatment sequence for the infected pulp of a tooth which is intended to result in the elimination of infection and the protection o ...
Indirect
pulp capping Pulp capping is a technique used in dental restorations to prevent the dental pulp from necrosis, after being exposed, or nearly exposed during a cavity preparation, from a traumatic injury, or by a deep cavity that reaches the center of the toot ...
(IPC) is a treatment that leaves the deepest carious tooth material (dentin) next to the pulp undisrupted to avoid exposing the pulp. The caries-affected dentin is covered with a biocompatible medicament to form a seal over the tooth. Medicaments used in IPC include calcium hydroxide and alternates including bonding agents and liners. Direct pulp capping (DPC) is a treatment performed when a pin-point or small pulp exposure of 1mm or less occurs after removal of carious tooth material (dentin) excavation. The pulp is covered with a medicament. This technique has limited use when pulp is exposed due to injury but is generally not accepted for managing carious pulp exposures in primary teeth, as it has been shown to have limited success. Medicaments used in DPC include calcium hydroxide and alternates such as mineral trioxide aggregate (MTA).
Pulpotomy Pulpotomy is a minimally invasive procedure performed in children on a primary tooth with extensive caries but without evidence of root pathology. The minimally invasive endodontic techniques of vital pulp therapy (VPT) are based on improved unders ...
is a treatment performed on a primary tooth with extensive decay without involving pulp in the root canal (radicular pulp) (Cochrane). The entire coronal pulp is removed and the radicular pulp bleeding is stopped. The remaining radicular pulp is treated with a medicament. Pulpotomy is the most frequently used vital pulp therapy technique for deep dental caries in primary teeth. Medicaments used in pulpotomy include commonly
formocresol Formacresol is a mixture consisting of formalin, cresol and glycerine used in dentistry. It is used for vital pulpotomy of primary teeth and as a temporary intracanal medicament during root canal therapy. Buckley's solution is a 20% form of formo ...
, MTA and ferric sulfates and less commonly sodium hypochlorite, calcium hydroxide, and tricalcium silicate.
Pulpectomy Root canal treatment (also known as endodontic therapy, endodontic treatment, or root canal therapy) is a treatment sequence for the infected pulp of a tooth which is intended to result in the elimination of infection and the protection o ...
is a treatment performed on a primary tooth with extensive decay and involving pulp in the root canal (radicular pulp with irreversible
pulpitis Pulpitis is inflammation of dental pulp tissue. The pulp contains the blood vessels, the nerves, and connective tissue inside a tooth and provides the tooth’s blood and nutrients. Pulpitis is mainly caused by bacterial infection which itself is ...
or necrosis). The radicular pulp is removed, the pulp canals are filled with a medicament, and a filling is put on the tooth. Medicaments used in pulpectomy include resorbable materials so that they will undergo resorption (dissolution) along with the primary tooth root to allow for proper tooth loss (exfoliation) and replacement with permanent successor teeth.


Preformed Crowns

Decayed primary teeth can be restored with a fitted
crown A crown is a traditional form of head adornment, or hat, worn by monarchs as a symbol of their power and dignity. A crown is often, by extension, a symbol of the monarch's government or items endorsed by it. The word itself is used, partic ...
. This can be made from a variety of different materials and attached using a range of methods. A common one used amongst children with caries is a preformed metal crown (PMC). This type of crown is pressed over a decayed tooth without any preparation, local anaesthetic or caries removal, also termed the
Hall technique The Hall Technique is a non-invasive treatment for decayed baby back ( molar) teeth. Decay is sealed under preformed (stainless steel) crowns, avoiding injections and drilling. It is one of a number of biologically orientated strategies for managin ...
. Studies have shown that more dental practitioners prefer conventional fillings as opposed to PMC’s. However, studies have shown that the risk of both major and minor failures along with pain in the long term was comparatively lower using PMCs as opposed to conventional restorations. Patients who had crowns fitted using the Hall technique also experienced noticeably less discomfort at the time of the appointment, relative to fillings. However, the populations studied were limited to fit and healthy children, and additional research into the tolerance and outcomes of this treatment needs to be done for children with special needs.


Recommendations for medicaments used in pulp treatment

After direct pulp capping, it is unclear whether any one medicament is superior. After pulpotomy, MTA is the most effective medicament and formocresol is also effective. Both are more effective than calcium hydroxide, which is more likely to fail. While there are concerns about the toxicity of formocresol, currently there are no reports of toxicity related to formocresol use for vital pulp therapies in children. An undesirable effect of treatment with MTA is the grey discoloration of treated teeth, but this effect is purely esthetic and does not affect the success of pulp treatment. For pulpectomy, it is unclear whether any one medicament is superior. Zinc oxide eugenol (ZOE) may be the best choice for filling in the
root canals In vascular plants, the roots are the organs of a plant that are modified to provide anchorage for the plant and take in water and nutrients into the plant body, which allows plants to grow taller and faster. They are most often below the sur ...
after pulpectomy in primary teeth, but more evidence is needed to confirm the superiority. ZOE is effective, inexpensive, and reasonably safe for use in children.


Treatment recommendations

It is unclear which pulp therapy (i.e. IPC, DPC, pulpotomy, pulpectomy) is the most effective, as there are no studies directly comparing these treatment options. The success rates are similar amongst the various therapies. The choice of therapy should be made based on the removal of caries-affected dentin, whether there is a pulp exposure, adverse effects, clinical expertise, and patient preference.


Society and culture

In almost all European languages the primary teeth are called "baby teeth" or "milk teeth". In the United States and Canada, the term "baby teeth" is common. In some Asian countries they are referred to as "fall teeth" since they will eventually fall out. Although shedding of a milk tooth is predominantly associated with positive emotions such as pride and joy by the majority of the children, socio-cultural factors (such as parental education, religion or country of origin) affect the various emotions children experience during the loss of their first primary tooth. Various cultures have customs relating to the loss of deciduous teeth. In English-speaking countries, the
tooth fairy The Tooth Fairy is a fantasy figure of early childhood in Western and Western-influenced cultures. The folklore states that when children lose one of their baby teeth, they should place it underneath their pillow or on their bedside table and ...
is a popular childhood fiction that a fairy rewards children when their baby teeth fall out. Children typically place a tooth under their pillow at night. The fairy is said to take the tooth and replace it with money or small gifts while they sleep. In some parts of
Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
,
Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic country located on ...
and
Norway Norway, officially the Kingdom of Norway, is a Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of Jan Mayen and t ...
, the children put the tooth in a glass of water. In medieval Scandinavia there was a similar tradition, surviving to the present day in Iceland, of is, tannfé, translation=tooth-money, a gift to a child when it cuts its first tooth. In
Nigeria Nigeria ( ), , ig, Naìjíríyà, yo, Nàìjíríà, pcm, Naijá , ff, Naajeeriya, kcg, Naijeriya officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf o ...
, the
Igbo Igbo may refer to: * Igbo people, an ethnic group of Nigeria * Igbo language, their language * anything related to Igboland, a cultural region in Nigeria See also * Ibo (disambiguation) * Igbo mythology * Igbo music * Igbo art * * Igbo-Ukwu, a ...
in a similar custom expect a visiting relative or guest to make a gift or donation to an infant upon the visitor's sighting of the infant's deciduous teeth.
Hausa Hausa may refer to: * Hausa people, an ethnic group of West Africa * Hausa language, spoken in West Africa * Hausa Kingdoms, a historical collection of Hausa city-states * Hausa (horse) or Dongola horse, an African breed of riding horse See also ...
culture has it that a child with a fallen tooth should not let a
lizard Lizards are a widespread group of squamate reptiles, with over 7,000 species, ranging across all continents except Antarctica, as well as most oceanic island chains. The group is paraphyletic since it excludes the snakes and Amphisbaenia alt ...
see the toothless gum because if a lizard does see it, no tooth will grow in its place. Other traditions are associated with mice or other rodents because of their sharp, everlasting teeth. The character Ratón Pérez appears in the tale of
The Vain Little Mouse The Vain Little Mouse ( es, La Ratita Presumida) is a folktale about a little mouse and her many suitors. Variants There are many variants of this tale. In some versions of the tale, the she-mouse is seduced by the answer of the cat, who sweetly ...
. A Ratoncito Pérez was used by Colgate in marketing toothpaste in Venezuela¡Producto Registrado!: Agosto 1998: Centuria Dental
.
and Spain. In
Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...
, the Tooth Fairy () is also often replaced by a small mouse (), or by
Saint Apollonia Saint Apollonia ( el, Αγία Απολλωνία, cop, Ϯⲁⲅⲓⲁ Ⲁⲡⲟⲗⲗⲟⲛⲓⲁ) was one of a group of virgin martyrs who suffered in Alexandria during a local uprising against the Christians prior to the persecution of Decius ...
, patron saint of tooth complaints. In
France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...
and in
French-speaking Belgium In Belgium, the French Community (french: Communauté française; ) refers to one of the three constituent constitutional linguistic communities. Since 2011, the French Community has used the name Wallonia-Brussels Federation (french: Fédé ...
, this character is called french: la petite souris, translation=The Little Mouse. From parts of lowland
Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the ...
comes a tradition similar to the fairy mouse: a white fairy rat who purchases the teeth with coins. Several traditions concern throwing the shed teeth. In
Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a list of transcontinental countries, transcontinental country located mainly on the Anatolia, Anatolian Peninsula in Western Asia, with ...
,
Cyprus Cyprus ; tr, Kıbrıs (), officially the Republic of Cyprus,, , lit: Republic of Cyprus is an island country located south of the Anatolian Peninsula in the eastern Mediterranean Sea. Its continental position is disputed; while it is geo ...
, and
Greece Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders with ...
, children traditionally throw their fallen baby teeth onto the roof of their house while making a wish. Similarly, in some Asian countries, such as
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
,
Korea Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republic o ...
,
Nepal Nepal (; ne, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne, सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in South Asia. It is mai ...
, the
Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...
, and
Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making i ...
, when a child loses a tooth, the usual custom is that he or she should throw it onto the roof if it came from the lower jaw, or into the space beneath the floor if it came from the upper jaw. While doing this, the child shouts a request for the tooth to be replaced with the tooth of a mouse. This tradition is based on the fact that the teeth of mice grow for their entire lives, a characteristic of all rodents. In
Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
, a different variation calls for lost upper teeth to be thrown straight down to the ground and lower teeth straight up into the air or onto the roof of a house; the idea is that incoming teeth will grow in straight. Some parts of
China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
follow a similar tradition by throwing the teeth from the lower jaw onto the roof and burying the teeth from the upper jaw underground, as a symbol of urging the permanent teeth to grow faster towards the right direction. The
Sri Lanka Sri Lanka (, ; si, ශ්‍රී ලංකා, Śrī Laṅkā, translit-std=ISO (); ta, இலங்கை, Ilaṅkai, translit-std=ISO ()), formerly known as Ceylon and officially the Democratic Socialist Republic of Sri Lanka, is an ...
, tradition is to throw the baby teeth onto the roof or a tree in the presence of an Indian palm squirrel. The child then tells the squirrel to take the old tooth in return for a new one. In some parts of
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
, young children offer their discarded baby teeth to the sun, sometimes wrapped in a tiny rag of cotton turf. In the
Assam Assam (; ) is a state in northeastern India, south of the eastern Himalayas along the Brahmaputra and Barak River valleys. Assam covers an area of . The state is bordered by Bhutan and Arunachal Pradesh to the north; Nagaland and Manipur ...
state of India, children throw their baby teeth to the roof of their house and urge a mouse to take it, to exchange with its teeth (permanent ones). Something similar occurs in the
Dominican Republic The Dominican Republic ( ; es, República Dominicana, ) is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean region. It occupies the eastern five-eighths of the island, which it shares wit ...
where children will throw their baby teeth to the roof of a house with a thatched roof and ask a mouse to take it and replace it with a new (permanent) tooth (but not its own). The tradition of throwing a baby tooth up into the sky to the sun playfully asking for a better tooth to replace it is common in Middle Eastern countries (including
Iraq Iraq,; ku, عێراق, translit=Êraq officially the Republic of Iraq, '; ku, کۆماری عێراق, translit=Komarî Êraq is a country in Western Asia. It is bordered by Turkey to Iraq–Turkey border, the north, Iran to Iran–Iraq ...
,
Jordan Jordan ( ar, الأردن; tr. ' ), officially the Hashemite Kingdom of Jordan,; tr. ' is a country in Western Asia. It is situated at the crossroads of Asia, Africa, and Europe, within the Levant region, on the East Bank of the Jordan Rive ...
,
Egypt Egypt ( ar, مصر , ), officially the Arab Republic of Egypt, is a transcontinental country spanning the northeast corner of Africa and southwest corner of Asia via a land bridge formed by the Sinai Peninsula. It is bordered by the Mediter ...
and
Sudan Sudan ( or ; ar, السودان, as-Sūdān, officially the Republic of the Sudan ( ar, جمهورية السودان, link=no, Jumhūriyyat as-Sūdān), is a country in Northeast Africa. It shares borders with the Central African Republic t ...
). It may originate in a pre-Islamic offering and certainly dates back to at least the 13th century, when Izz bin Hibat Allah Al Hadid mentions it. In
Prehistoric Britain Several species of humans have intermittently occupied Great Britain for almost a million years. The earliest evidence of human occupation around 900,000 years ago is at Happisburgh on the Norfolk coast, with stone tools and footprints prob ...
, lost teeth were commonly burnt to destroy them. This was partly for religious reasons connected with the
Last Judgement The Last Judgment, Final Judgment, Day of Reckoning, Day of Judgment, Judgment Day, Doomsday, Day of Resurrection or The Day of the Lord (; ar, یوم القيامة, translit=Yawm al-Qiyāmah or ar, یوم الدین, translit=Yawm ad-Dīn, ...
and partly for fear of what might happen if an animal got them. A rhyme might be said as a blessing: ''Old tooth, new tooth'' ''Pray God send me a new tooth''


See also

*
Permanent teeth Permanent teeth or adult teeth are the second set of teeth formed in diphyodont mammals. In humans and old world simians, there are thirty-two permanent teeth, consisting of six maxillary and six mandibular molars, four maxillary and four mand ...
*
Human tooth development Tooth development or odontogenesis is the complex process by which teeth form from embryonic cells, grow, and erupt into the mouth. For human teeth to have a healthy oral environment, all parts of the tooth must develop during appropriate stag ...
*
Tooth eruption Tooth eruption is a process in tooth development in which the teeth enter the mouth and become visible. It is currently believed that the periodontal ligament plays an important role in tooth eruption. The first human teeth to appear, the decidu ...
*
Tooth fairy The Tooth Fairy is a fantasy figure of early childhood in Western and Western-influenced cultures. The folklore states that when children lose one of their baby teeth, they should place it underneath their pillow or on their bedside table and ...
*
Teething Teething is the process by which an infant's first teeth (the deciduous teeth, often called "baby teeth" or "milk teeth") appear by emerging through the gums, typically arriving in pairs. The mandibular central incisors are the first primary te ...
* Dentition


References

{{DEFAULTSORT:Deciduous Teeth Types of teeth Tooth fairies