Tooth loss is a process in which one or more teeth come loose and fall out. Tooth loss is normal for deciduous teeth (baby teeth), when they are replaced by a person's adult teeth. Otherwise, losing teeth is undesirable and is the result of injury or disease, such as mouth trauma, tooth injury, tooth decay, and gum disease. The condition of being toothless or missing one or more teeth is called edentulism.
Prevention of tooth loss 
Missing tooth replacement 
Research in tooth regeneration 
Researchers in Japan have successfully regrown fully functional teeth in mice. Epithelial and mesenchymal cells were extracted from the mice, cultured to produce a tooth "germ", and the germ was then implanted into the bone at the space of a missing tooth. A tooth of the correct external and internal structure, hardness, strength, and sensitivity later erupted in the space, eventually meeting the opposing tooth in a manner similar to an original natural tooth. This technique may be a possible future treatment for replacement of missing teeth.
See also 
- Teeth cleaning
- Dental surgery
- Wisdom tooth
- Dental Implant
- Etsuko Ikeda, Ritsuko Morita, Kazuhisa Nakao, Kentaro Ishida, Takashi Nakamura, Teruko Takano-Yamamoto, Miho Ogawa, Mitsumasa Mizuno, Shohei Kasugai, and Takashi Tsuji (2009). "Fully functional bioengineered tooth replacement as an organ replacement therapy". Proceedings of the National Academy of Sciences of the United States of America 106 (32): 13475–80. doi:10.1073/pnas.0902944106. PMC 2720406. PMID 19666587.
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