Henneman Tooth Movement
Henneman Tooth Movement Quiz
Test your knowledge on the intricate processes involved in tooth movement with our comprehensive quiz on Henneman's theory. This quiz covers everything from the fun
- Multiple choice questions
- In-depth answers provided
- Improve your understanding of dental biomechanics
Which of the following is not a function of the periodontal ligament?
Contains nerve fibres than transmit tactile pressure
Blood vessels to nourish enamel and alveolar bone
Provides cementoblasts to produce cementum throughout tooth’s life
Osteoblasts that maintain bone tissue of tooth socket
Induction of tooth movement occurs by which four stages (in which correct order)?
Cell activation and differentiation, cell strain, matrix stain and fluid flow, remodelling
Matrix strain and fluid flow, cell strain, cell activation and differentiation, remodelling
Remodelling, cell strain, cell activation and differentiation, remodelling
Cell strain, remodelling, matrix strain and flow, cell activation and differentiation
Which words fills in the gap from the image below?
Strain of PDL cells: osteoblasts and fibroblasts
Activation of osteoclasts
Initiation of differentiation
Preparation of osteogenic cells
Which word fills in the gap of the blanked out box?
Absorption of alveolar bone
PDL strain
ECM synthesis
Breakdown of proteins
Which word fills in the gap of the blanked out box?
Bone recession
Bone remodelling
PDL fixation
Loss of attachment
Which of the following does NOT occur during the cell activation and differentiation stage?
New extracellular matrix is formed during remodelling when collagen increases
Transforming growth factor, cathepsins and interleukin-1 beta found in the gingival crevicular fluid of teeth and help synthesise extracellular matrix
Nitric oxide promotes osteoblast activity at apposition side so bone is formed
Bone formation at the apposition side is through extracellular matrix production and mineralisation
During the cell strain phase
Direct deformation of PDL cells via strain of cell matrix attachment
Protein kinases initiate intracellular signalling pathways
PDL osteoblasts release signalling molecules
Extracellular matrix is degraded
Which of the following does not occur at the resorption side during the remodelling stage?
PDL is being formed to maintain the tooth's support
Osteoclasts attach to alveolar bone via integrins
Type 1 collagen is replaced by Type 3 connective tissue so movement occurs
PDL and alveolar bone do not breakdown
Which of the following does not occur at the apposition side during the remodelling stage-?
Collagen production increases to fix tooth back into place
Osteoclasts destroy bone to allow tooth to move
New PDL fibres become trapped in new alveolar bone and are termed Sharpey's fibres
PDL fibres are stretched to move the teeth through the bone
Which substances are involved in cell activation and differentiation?
RANKL, osteoprotegerin, colony-stimulating factor
RANK, prostaglandins, modafinil
Osteocalcin, alkaline phosphatase, collagenous proteins
Osteoprotegerin, alkaline phosphatase, benzodiazepine
During cell activation and cell differentiation, - made by - activate - on - side to form bone
Chemokines; osteoblasts; PDL osteoclasts; apposition
Cytokines; osteoblasts; alveolar bone cells; apposition
Cytokines; osteocytes; PDL osteoblast precursors; resoprtion
Chemokines; osteoclasts; alveolar bone cells; resorption
During matrix strain and fluid flow, stretching of the collagen fibres occurs at the - side?
Resorption side
Apposition side
Tooth movement can only occur through orthodontic treatment around menarche.
True
False
How to osteoclasts attach to the bone surface during cell differentiation and activation?
Osteoblasts degrade the non-mineralised layer of the osteoid
Osteoblasts create an adhesion layer for molecules to attach
Surface tension increases as the ligament is stretched on one side
Vesicles carrying adhesion molecules breakdown and release factors
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