|
epithelium
|
mesenchyme
|
---|
|
ide
|
ode
|
odontoblasts
|
dental papilla
|
---|
initiation
|
++
|
++
|
-
|
-
|
morphogenesis
|
++
|
++
|
-
|
-
|
early cytodifferentiation
|
++ *
|
++ *
|
-
|
-
|
late cytodifferentiation
|
++ *
|
++ *
|
-
|
-
|
attachment
| | | | |
- The two layers of the enamel organ, IDE and ODE, maintain the expression of E-cadherin. The mesenchyme-derived dental papilla does not express this cell adhesion molecule during development. *: stronger expression of E-cadherin on theventral side of the developing tooth.