Draft:Anatomy of the Tooth

Submission declined on 7 December 2024 by AlphaBetaGamma (talk).

Redundant topic (See Human tooth and Dental anatomy.)

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Declined by AlphaBetaGamma 30 days ago. Last edited by BattyBot 15 days ago. Reviewer: Inform author.

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Most adults have 32 teeth: 8 incisors, 4 canines, 8 premolars, and 12 molars (4 of these being wisdom teeth.^[1]). Each tooth is composed of the same basic material and are ectodermal organs meaning they arise from the outermost, or most superficial layer, of an animal embryo^[2].

Teeth have four main layers: enamel, dentin, cementum, and tooth pulp.

Enamel: Enamel is the protective layer of each tooth, protecting the tooth from harmful bacteria that could cause cavities to develop. Enamel is the hardest substance in the human body.

Dentin: Dentin occupies the layer underneath the enamel and is weaker than enamel. When dentin is exposed, a person is at risk for cavities to develop. Dentin is mainly composed of a mineral called hydroxyapatite (around 70%), along with organic components like collagen fibers (around 20%), and a small amount of water (around 10%^[3]).

Cementum: Cementum covers your tooth root. Along with your periodontal tissues, it helps anchor your tooth firmly in your jaw^[4]

Tooth Pulp: Tooth pulp lies within the innermost layer of your tooth. It contains nerves, blood vessels and connective tissues.^[4]

References

^ "How many teeth do adults have? Anatomy and function". www.medicalnewstoday.com. 2020-07-22. Retrieved 2024-12-06.
^ "Ectoderm | Embryo Project Encyclopedia". embryo.asu.edu. Retrieved 2024-12-07.
^ Dental, Visalia Care (2018-01-26). "What Is Dentin?". Visalia Care Dental Visalia California. Retrieved 2024-12-07.
^ ^a ^b N/A (2023-01-26). "Teeth". Cleveland Clinic.

[1] "How many teeth do adults have? Anatomy and function". www.medicalnewstoday.com. 2020-07-22. Retrieved 2024-12-06.

[2] "Ectoderm | Embryo Project Encyclopedia". embryo.asu.edu. Retrieved 2024-12-07.

[3] Dental, Visalia Care (2018-01-26). "What Is Dentin?". Visalia Care Dental Visalia California. Retrieved 2024-12-07.

[:0-4] N/A (2023-01-26). "Teeth". Cleveland Clinic.

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