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Pregunta 1
Pregunta
Which of the following statements is false?
Respuesta
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Cementum, periodontal ligament and alveolar bone function and develop as an interdependent unit
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Alveolar bone develops before cementum
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SHH is a soluble inductive factor affecting cell differentiation
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Development goes coronal to apical in direction
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Cell rests of Malassez comes from the enamel organ
Pregunta 2
Pregunta
What did the Ten Cate experiment regarding tooth buds implanted in the backs of rats reveal about periodontal development?
Respuesta
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Alveolar bone cells were generated
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There was less tritium thymidine in the pulp cells and odontoblasts due to high proliferation of these cells
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PDL and cementum come from the dental follicle
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Surrounding tissue, PDL, cementoblast, and pulp cells were observed.
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none of the above
Pregunta 3
Pregunta
Which of the following is true?
Respuesta
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First cementum is cellular cementum
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Outer cell layer is inductive
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Interactions between the follicular cells and intermediate cementum leads to the production of cellular cementum
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Signalling factors come from the dental papilla
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none of the above
Pregunta 4
Pregunta
Which of the following is true about HERS?
Respuesta
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Before occlusion, fibers are perpendicular to root surface
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Synthesis of intermediate cementum by the outer cell layer of HERS
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Involved in odontoblast differentiation
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Synthesis and differentiation
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None of the above
Pregunta 5
Pregunta
The periodontal ligament uses type 4 collagen. The basal dental lamina and alveolar bone uses collagen types 1 and 3.
Respuesta
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T/T
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T/F
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F/T
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F/F
Pregunta 6
Pregunta
Which of the following is false?
Respuesta
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Alveolar bone forms by mesenchymal condensation within the dental follicle
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Lamellar bone becomes woven bone via action of the cutting cones
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Cementum is appositional
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Acellular cementum is thick
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Parallel fibers are present in non-erupted teeth
Pregunta 7
Pregunta
What was the point of that experiment where teeth were grown in the eyes of rats?
Respuesta
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To give the finger to animal rights' groups
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The pulp graft demonstrated development of PDL
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The dental papilla was shown to generate bone
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The papilla and follicle both must be present for formation of PDL, bone, and tooth
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Alveolar bone generation requires the presence of both cementum and PDL
Pregunta 8
Pregunta
The reduced enamel epithelium attaches to the enamel surface via desmosomes. Eruption leads to fusion of REE and oral epithelium
Respuesta
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T/T
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T/F
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F/T
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F/F
Pregunta 9
Pregunta
Which of the following is true?
Respuesta
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The attachment between REE and enamel surface is a secondary epithelial attachment
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The internal basal lamina attaches to the gingiva
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Local expression of inflammatory mediators and cytokines stimulate proliferation of the inner layer of the REE and oral epithelium
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The demarcation between gingival and sulcular epithelium is that sulcular has linear basal layer that becomes convoluted
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Reduced enamel epithelium is attached to the unerupted enamel surface
Pregunta 10
Pregunta
Passive eruption involves the apical migration of the gingival margin. This naturally occurs with age
Respuesta
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T/T
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T/F
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F/T
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F/F
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