|
The growth rate of acellular
extrinsic fibre cementum in adult is |
0.005 to 0.01 micron per
day |
|
what are collagen crimps
|
They are a specific type of
waviness of collagenous fibre, best visualized under polarizer, as a banded structure reflecting the periodicity of the fiber |
|
In PDL, The rate of collage
remodelling is highest along the |
Root apex
|
|
Why PDL does not get
mineralized |
The rich presence of
hylaraoun and chondroitin sulphate deter the minerlaization. Moreover, calcium binding proteins such as S100A4 in extracellular matrix of PDL have been suggested to prevent mineralization |
|
The main type of
glycosaminoglyacan in PDL is |
Hyaluronan
|
|
Zone of Shear in PDL is
associated with |
eruption of teeth.
Remodelling zone associated with teeth eruption and often in mid-region of the PDL |
|
The type of fibers that are
increased in PDL to accommodate high occusal loads are |
Oxytalan fibers
|
|
An abutment teeth, as
compared to normal teeth have high numbers of ____________________ fibers |
Oxytalan fibers
|
|
Periodontal ligament
fibroblasts are derived from |
Ectomesenchyme
|
|
Gingival fibroblasts are
derived from |
Mesenchyme
|
Prof. Rooban Thavarajah
Oral and Maxillofacial Pathologist
List