Development L14 - tooth eruption Flashcards
tooth eruption refers to the movement of the tooth from the devlopmental position in the jaw to its what position?
to its functional position in occlusion in the mouth
tooth eruption is split in to two types what are they
active eruption
passive eruption
in reference to tooth eruption - the bodily movement of the tooth to its desired location is referred to as what type of tooth eruption?
active eruption
in reference to tooth eruption - the uncovering of the tooth by apical gingival migration is referred to as what type of tooth eruption
passive eruption
what is pre-eruptive movement?
is the movement of the permanet tooth, from a ligual position to a apical position of the primary tooth.
this movement prepares the permanent tooth for eruption
what occurs during permanent eruptive movement
the permanet tooth moves cervically, as it does this, it resorbs the root of the primary tooth. causing primary tooth exfoliation
what is the eruptive force of tooth
5-10g force
what determines the speed at which a tooth erupts
balance between eruptive forces and resistive forces
eruption theories, such as root formation, bone formation and fluid pressure. is though to push or pull the tooth?
push
eruption theories such as PDL: collagen contraction, fibroblast contraction and fibroblast migration, has push or pull effect on the tooth
pull
where would you find a greater hydrostatic pressure, for a erupting tooth, cerically or apically
apically
if you was to use cervical sympathetic stimulation (vasoconstrictor) of the erupting teeth, what would happen?
cessation of eruption
Primary tooth must be resorbed to facilitate successional eruption.
what is primary tooth resorbed by?
osteoclast
