b Eruptive phase Begins by root formation and ends when the tooth reaches the

B eruptive phase begins by root formation and ends

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b. Eruptive phase: Begins by root formation and ends when the tooth reaches the occlusal plane. - Types of movement during the eruptive phase are: bodily (drifting), axial movement, tilting or tipping movement & rotating movement. - Development changes during this phase: o Root formation initiated by proliferation of Hertwigs root sheath. o Supporting apparatus formation. o Dentino-gengival junction formation. c. Post- eruptive phase: Begins when the tooth reaches the occlusal plane and ends with the life span of the tooth. - Pattern of tooth movement in post eruptive phase: axial movement & mesial drift. PDF created with pdfFactory Pro trial version
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