29. 30 development of periodontium

Cementum, periodontal ligament and alveolar bone function and develop as an interdependent unit

Alveolar bone develops before cementum

SHH is a soluble inductive factor affecting cell differentiation

Development goes coronal to apical in direction

Cell rests of Malassez comes from the enamel organ

Alveolar bone cells were generated

There was less tritium thymidine in the pulp cells and odontoblasts due to high proliferation of these cells

PDL and cementum come from the dental follicle

Surrounding tissue, PDL, cementoblast, and pulp cells were observed.

none of the above

First cementum is cellular cementum

Outer cell layer is inductive

Interactions between the follicular cells and intermediate cementum leads to the production of cellular cementum

Signalling factors come from the dental papilla

none of the above

Before occlusion, fibers are perpendicular to root surface

Synthesis of intermediate cementum by the outer cell layer of HERS

Involved in odontoblast differentiation

Synthesis and differentiation

None of the above

T/T

T/F

F/T

F/F

Alveolar bone forms by mesenchymal condensation within the dental follicle

Lamellar bone becomes woven bone via action of the cutting cones

Cementum is appositional

Acellular cementum is thick

Parallel fibers are present in non-erupted teeth

To give the finger to animal rights' groups

The pulp graft demonstrated development of PDL

The dental papilla was shown to generate bone

The papilla and follicle both must be present for formation of PDL, bone, and tooth

Alveolar bone generation requires the presence of both cementum and PDL

T/T

T/F

F/T

F/F

The attachment between REE and enamel surface is a secondary epithelial attachment

The internal basal lamina attaches to the gingiva

Local expression of inflammatory mediators and cytokines stimulate proliferation of the inner layer of the REE and oral epithelium

The demarcation between gingival and sulcular epithelium is that sulcular has linear basal layer that becomes convoluted

Reduced enamel epithelium is attached to the unerupted enamel surface

T/T

T/F

F/T

F/F