1_Cementum overlaps the enamel (60%-65%)
ูุฐุง ุณุคุงู ูุฌู
2_(acellular cementum):
it does not contain cells and sharpey's
fibers make up most of its structure .
3_(cellular cementum
This type of cementum
contains cells (cementocytes), but sharpey's fibers occupy a
smaller portion of this type of cementum.
4_Ankylosis:Fusion of the cementum and alveolar bone with
obliteration of the PDL.(ู
ูุถูุน ููู ู
ูู
ุจุณ ุงูุงูู
ูุฐุง ุงูุณุทุฑ)
5ูReversal line:The newly formed cementum is demarcated
from the root by a deepl staining irregular line which
delineates the border of the previous resorption.