Which of the following statements is false?
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
What did the Ten Cate experiment regarding tooth buds implanted in the backs of rats reveal about periodontal development?
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
Which of the following is true?
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
Which of the following is true about HERS?
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
The periodontal ligament uses type 4 collagen. The basal dental lamina and alveolar bone uses collagen types 1 and 3.
T/T
T/F
F/T
F/F
Which of the following is false?
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
What was the point of that experiment where teeth were grown in the eyes of rats?
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
The reduced enamel epithelium attaches to the enamel surface via desmosomes. Eruption leads to fusion of REE and oral epithelium
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
Passive eruption involves the apical migration of the gingival margin. This naturally occurs with age
