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Questions and Answers
What is the characteristic of a pure translation movement?
What is the characteristic of a pure translation movement?
- Pressure areas on the apex of the tooth
- All PDL surface with the same pressure (correct)
- Different pressure areas on the PDL surface
- No pressure area on the PDL surface
Which type of movement requires very light forces and is considered very dangerous?
Which type of movement requires very light forces and is considered very dangerous?
- Intrusion (correct)
- Rotation
- Torque
- Extrusion
What is the characteristic of a torque movement?
What is the characteristic of a torque movement?
- Controlled tipping movement of the crown
- Mass or bodily movement of the tooth
- Controlled tipping movement of the root (correct)
- Pure rotation of the tooth
Which type of movement can be achieved with both removable and fixed appliances?
Which type of movement can be achieved with both removable and fixed appliances?
What is the characteristic of an extrusion movement?
What is the characteristic of an extrusion movement?
What is the force range required for a torque movement?
What is the force range required for a torque movement?
What happens to the blood vessels within the PDL when heavy forces are applied for 3-5 seconds?
What happens to the blood vessels within the PDL when heavy forces are applied for 3-5 seconds?
What is the result of cell death in the compressed area after hours of heavy force application?
What is the result of cell death in the compressed area after hours of heavy force application?
What type of resorption occurs when osteoclasts come from far away to rescue the tooth?
What type of resorption occurs when osteoclasts come from far away to rescue the tooth?
When does tooth movement typically occur in response to heavy force application?
When does tooth movement typically occur in response to heavy force application?
What is the result of the application of continuous heavy forces for less than 1 second?
What is the result of the application of continuous heavy forces for less than 1 second?
What is the term for the type of resorption that occurs when the tooth begins to move?
What is the term for the type of resorption that occurs when the tooth begins to move?
What is the primary difference between frontal resorption and undermining resorption?
What is the primary difference between frontal resorption and undermining resorption?
What occurs within the first 4 hours of continuous force application?
What occurs within the first 4 hours of continuous force application?
What happens to the blood vessels within the PDL between 3-5 seconds of continuous force application?
What happens to the blood vessels within the PDL between 3-5 seconds of continuous force application?
What is the result of the 2nd wave of osteoclasts in frontal resorption?
What is the result of the 2nd wave of osteoclasts in frontal resorption?
At what time interval does tooth movement typically begin?
At what time interval does tooth movement typically begin?
What is the effect of < 1 second of continuous force application on the PDL?
What is the effect of < 1 second of continuous force application on the PDL?
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