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Enamel spindles are "short, linear defects, found at the dentinoenamel junction (DEJ) and extend into the enamel, often being more prevalent at the cusp tips." The DEJ is the interface of the enamel and the underlying dentin. Because they are "formed by entrapment of odontoblast processes between ameloblasts prior to and during amelogenesis," they cannot be found at the enamel surface protruding inward, as enamel lamellae are often located.

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  • Enamel spindles (en)
  • エナメル紡錘 (ja)
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  • エナメル紡錘（エナメルぼうすい）は（英語: Dental-enamel junction）からエナメル質に向けて伸びる短い、線状の欠陥であり、（英語: Cusp (anatomy)）頂付近に多く見られる。 エナメル質形成前及び形成中に、エナメル芽細胞の間に取り込まれた象牙芽細胞によって作られたであり、エナメル葉のようにエナメル質表層から内側に向かうことや、のように小さく、枝分かれすることはない。。 エナメル紡錘に関する記述は、すでに1845年にはLessing によって報告されているが、1878年にBödeckerによって付けられた紡錘(spindle)という名称が現在では用いられている。 (ja)
  • Enamel spindles are "short, linear defects, found at the dentinoenamel junction (DEJ) and extend into the enamel, often being more prevalent at the cusp tips." The DEJ is the interface of the enamel and the underlying dentin. Because they are "formed by entrapment of odontoblast processes between ameloblasts prior to and during amelogenesis," they cannot be found at the enamel surface protruding inward, as enamel lamellae are often located. (en)
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  • Enamel spindles are "short, linear defects, found at the dentinoenamel junction (DEJ) and extend into the enamel, often being more prevalent at the cusp tips." The DEJ is the interface of the enamel and the underlying dentin. Because they are "formed by entrapment of odontoblast processes between ameloblasts prior to and during amelogenesis," they cannot be found at the enamel surface protruding inward, as enamel lamellae are often located. Enamel spindles are often confused with two other entities: enamel lamellae and enamel tufts. Lamellae are linear enamel defects that extend from the surface of the enamel towards the DEJ, or vice versa. Enamel tufts are "small, branching defects that are found only at the DEJ, protruding into the enamel towards the enamel surface. Enamel spindles however, are in fact odontoblast processes that extend into the enamel. (en)
  • エナメル紡錘（エナメルぼうすい）は（英語: Dental-enamel junction）からエナメル質に向けて伸びる短い、線状の欠陥であり、（英語: Cusp (anatomy)）頂付近に多く見られる。 エナメル質形成前及び形成中に、エナメル芽細胞の間に取り込まれた象牙芽細胞によって作られたであり、エナメル葉のようにエナメル質表層から内側に向かうことや、のように小さく、枝分かれすることはない。。 エナメル紡錘に関する記述は、すでに1845年にはLessing によって報告されているが、1878年にBödeckerによって付けられた紡錘(spindle)という名称が現在では用いられている。 (ja)
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