Exam in Biophysics Lecture 1 PDF

Summary

This document contains a biophysics exam related to dental forces. It includes questions on various types of forces and their effects on dental structures. Example questions include 'What is force defined as in dentistry?' and 'Which type of force is applied to teeth when biting?'

Full Transcript

EXAM IN BIOPHYSICS LECTURE 1 1. **What is force defined as in dentistry?** - A) Energy transfer - B) A push or pull causing an object to change shape, direction, or motion - C) A static position - D) A type of chemical reaction 2. **Which type of force is applied to te...

EXAM IN BIOPHYSICS LECTURE 1 1. **What is force defined as in dentistry?** - A) Energy transfer - B) A push or pull causing an object to change shape, direction, or motion - C) A static position - D) A type of chemical reaction 2. **Which type of force is applied to teeth when biting?** - A) Tensile - B) Compressive - C) Shear - D) Torsional 3. **Where do internal forces in the oral cavity originate?** - A) External objects - B) Dental instruments - C) Muscles and joints - D) Restorative materials 4. **Excessive compressive forces can result in:** - A) Tooth mobility - B) Enamel wear and fractures - C) Increased tooth length - D) Enhanced dental strength 5. **Shear forces are applied in which direction?** - A) Toward the center - B) Away from the object - C) Parallel to the surface - D) In a circular motion 6. **Which force is experienced during tooth grinding?** - A) Compressive - B) Tensile - C) Shear - D) Impact 7. **Parafunctional forces are typically generated by:** - A) Speaking - B) Eating - C) Habits such as bruxism or clenching - D) Chewing food 8. **Tensile forces act in which direction relative to an object?** - A) Toward the center - B) Parallel to the surface - C) Away from the object - D) Inward twisting motion 9. **During orthodontic treatment, excessive tensile forces can lead to:** - A) TMJ healing - B) Tooth elongation - C) Root resorption - D) Enamel thickening 10. **What is the impact of shear forces on dental structures?** - A) Tooth whitening - B) Enamel repair - C) Tooth wear and potential enamel chipping - D) Improved tooth stability 11. **Torsional forces involve:** - A) Pushing an object inward - B) Stretching an object - C) Twisting around an axis - D) Parallel sliding motion 12. **Which type of force occurs when an object strikes a dental structure suddenly?** - A) Compressive - B) Tensile - C) Torsional - D) Impact 13. **Functional forces are related to:** - A) Daily activities like chewing and speaking - B) Trauma and accidents - C) Sleeping - D) Parafunctional habits 14. **Which type of force can lead to TMJ disorders when excessive?** - A) Compressive forces - B) Tensile forces - C) Torsional forces - D) Shear forces 15. **Excessive parafunctional forces can cause:** - A) Increased enamel growth - B) Tooth wear, fractures, and TMJ disorders - C) Stronger teeth - D) Reduced jaw muscle tension 16. **The magnitude of forces during normal chewing is approximately:** - A) 5-10 psi - B) 20-40 psi - C) 100-150 psi - D) 1-2 pounds 17. **Dental professionals must manage forces to:** - A) Speed up procedures - B) Increase the patient's bite force - C) Minimize risk of complications and ensure stability - D) Enhance enamel gloss 18. **Which of the following forces is essential for maintaining proper dental occlusion?** - A) Shear force - B) Compressive force - C) Parafunctional force - D) Impact force 19. **The periodontal ligament helps to:** - A) Absorb and distribute forces on the teeth - B) Increase tooth hardness - C) Prevent any tooth movement - D) Connect the jawbone and skull 20. **The main di erence between compressive and tensile forces is:** - A) Compressive forces push, while tensile forces pull - B) Both act in the same direction - C) Tensile forces compress structures - D) Compressive forces lengthen structures 21. **Impact forces are most likely to cause:** - A) Gradual wear - B) Minor tooth movement - C) Fractures or dislocations - D) Enhanced tooth strength 22. **Shear forces act primarily during:** - A) Biting only - B) Grinding or clenching of teeth - C) Sleeping - D) Speaking 23. **What is a common consequence of unbalanced dental forces?** - A) Improved enamel integrity - B) Malocclusion and TMJ issues - C) Reduced risk of tooth decay - D) Faster tooth healing 24. **The most critical step in managing forces during treatment is:** - A) Applying as much force as possible - B) Using minimal force at all times - C) Properly assessing and distributing forces evenly - D) Ignoring patient history 25. **Which structure is most a ected by compressive forces during chewing?** - A) The gums - B) The enamel - C) The tongue - D) The jaw muscles 26. **Torsional forces during a procedure can lead to:** - A) Immediate healing - B) Enamel and dentin fractures if excessive - C) Increased tooth flexibility - D) Enhanced tooth strength 27. **The main cause of parafunctional forces is:** - A) Regular chewing - B) Trauma from accidents - C) Habits like clenching or grinding - D) Orthodontic treatment 28. **Excessive shear forces can result in:** - A) Enhanced jaw strength - B) Tooth mobility - C) Tooth surface damage and occlusal discrepancies - D) Reduced risk of TMJ disorders 29. **Tensile forces are most often utilized during:** - A) Tooth extraction - B) Orthodontic treatment - C) Routine cleaning - D) Dental crown placement 30. **Functional forces are balanced during:** - A) Normal oral activities like chewing and speaking - B) Bruxism - C) Excessive clenching - D) External trauma 31. **What is the main component involved in absorbing shock during force application in the oral cavity?** - A) Enamel - B) Pulp - C) Periodontal ligament - D) Gums 32. **Which type of force can be detrimental if applied excessively during dental restoration placement?** - A) Tensile - B) Compressive - C) Torsional - D) Functional 33. **Excessive parafunctional force can result in:** - A) Decreased muscle activity - B) Improved jaw alignment - C) TMJ disorders and tooth damage - D) Enhanced chewing efficiency 34. **An e ective strategy for managing forces during dental procedures includes:** - A) Ignoring patient pain tolerance - B) Using high-impact tools exclusively - C) Proper occlusal analysis and adjustment - D) Reducing the number of procedures performed 35. **Impact forces in dental contexts are typically associated with:** - A) Routine check-ups - B) Sudden trauma or accidents - C) Slow tooth movement - D) Regular oral hygiene practices 36. **The enamel of the tooth primarily functions to:** - A) Supply nutrients - B) Absorb nutrients from food - C) Withstand forces during mastication - D) Prevent tooth decay directly 37. **What can excessive compressive force during dental treatment lead to?** - A) Tooth elongation - B) Enamel fractures or damage to restorations - C) Increased bone density - D) Enhanced enamel strength 38. **The primary purpose of managing forces in dentistry is to:** - A) Speed up procedures - B) Improve the aesthetic of dental tools - C) Prevent damage and ensure long-term stability of oral structures - D) Limit patient movement 39. **Shear forces are particularly relevant during:** - A) Simple biting - B) Tooth extraction - C) Lateral movements such as grinding - D) Routine brushing 40. **The definition of compressive force in dentistry includes:** - A) Pulling an object apart - B) Pushing an object together - C) Twisting an object - D) Sliding an object against another ANSWERS 1. **B) A push or pull causing an object to change shape, direction, or motion** 2. **B) Compressive** 3. **C) Muscles and joints** 4. **B) Enamel wear and fractures** 5. **C) Parallel to the surface** 6. **C) Shear** 7. **C) Habits such as bruxism or clenching** 8. **C) Away from the object** 9. **C) Root resorption** 10. **C) Tooth wear and potential enamel chipping** 11. **C) Twisting around an axis** 12. **D) Impact** 13. **A) Daily activities like chewing and speaking** 14. **A) Compressive forces** 15. **B) Tooth wear, fractures, and TMJ disorders** 16. **B) 20-40 psi** 17. **C) Minimize risk of complications and ensure stability** 18. **B) Compressive force** 19. **A) Absorb and distribute forces on the teeth** 20. **A) Compressive forces push, while tensile forces pull** 21. **C) Fractures or dislocations** 22. **B) Grinding or clenching of teeth** 23. **B) Malocclusion and TMJ issues** 24. **C) Properly assessing and distributing forces evenly** 25. **B) The enamel** 26. **B) Enamel and dentin fractures if excessive** 27. **C) Habits like clenching or grinding** 28. **C) Tooth surface damage and occlusal discrepancies** 29. **B) Orthodontic treatment** 30. **A) Normal oral activities like chewing and speaking** 31. **C) Periodontal ligament** 32. **B) Compressive** 33. **C) TMJ disorders and tooth damage** 34. **C) Proper occlusal analysis and adjustment** 35. **B) Sudden trauma or accidents** 36. **C) Withstand forces during mastication** 37. **B) Enamel fractures or damage to restorations** 38. **C) Prevent damage and ensure long-term stability of oral structures** 39. **C) Lateral movements such as grinding** 40. **B) Pushing an object together** LECTURE 2 1. **During tooth preparation, forces must be controlled to avoid:** - A) Full removal of enamel - B) Damage to healthy tooth structure - C) Increased gum sensitivity - D) Speeding up decay 2. **What is essential for the success of dental implants?** - A) High shear force - B) Controlled compressive force for osseointegration - C) High tensile force - D) Constant impact force 3. **Which force type is most relevant during the placement of dental crowns?** - A) Impact force - B) Compressive force - C) Torsional force - D) Tensile force 4. **Why must forces be carefully managed during tooth extractions?** - A) To increase tooth movement - B) To prevent bone fractures and tissue damage - C) To ensure faster extraction - D) To reduce patient comfort 5. **Forces in orthodontics are primarily used to:** - A) Harden the tooth enamel - B) Move teeth into desired positions - C) Reduce jaw size - D) Increase saliva production 6. **Orthodontic forces need to be:** - A) Minimal and quick - B) Controlled and gradual - C) Randomly applied - D) Highly forceful for rapid results 7. **Excessive force during orthodontic treatment can lead to:** - A) Improved tooth color - B) Root resorption - C) Enhanced jaw strength - D) Increased tooth density 8. **In restorative dentistry, proper force management helps to:** - A) Increase restoration size - B) Prevent fracture or loosening of restorations - C) Reduce patient visits - D) Avoid tooth whitening 9. **Endodontic treatment requires forces that are:** - A) High impact to clear canals - B) Gentle and controlled to avoid complications - C) Random and fast - D) Focused on the tooth crown 10. **During implant placement, force control is necessary to:** - A) Reduce the procedure time - B) Ensure successful osseointegration - C) Enhance the tooth's enamel - D) Create larger tooth gaps 11. **In prosthodontics, forces are considered to:** - A) Enhance jaw growth - B) Maintain stability and function of prostheses - C) Reduce muscle activity - D) Improve gum color 12. **What must dentists consider when treating children in pediatric dentistry?** - A) Use of maximum force for quick results - B) The developing teeth and jaw structure - C) Only aesthetics - D) Minimizing all procedures 13. **What can happen if excessive forces are applied during oral surgery?** - A) Faster healing time - B) Bone fractures and tissue damage - C) Enhanced implant integration - D) Reduced bleeding 14. **Braces and aligners apply forces that are:** - A) Constantly high - B) Controlled and gradual - C) Randomly intense - D) Only compressive 15. **The main goal of managing forces during dental procedures is to:** - A) Speed up the procedure - B) Improve patient aesthetics - C) Minimize risk of complications and ensure long- term stability - D) Reduce treatment time significantly 16. **In endodontics, improper force management can result in:** - A) Faster tooth recovery - B) Instrument breakage or root canal damage - C) Better crown fitting - D) Reduced infection risk 17. **Forces in pediatric dentistry should be:** - A) The same as for adults - B) Adjusted for growing tissues - C) Ignored for baby teeth - D) Maximum for best results 18. **The success of dental bridges depends on:** - A) High tensile force - B) Equal distribution of applied forces - C) Using minimal force - D) Avoiding any force application 19. **Managing forces in prosthodontics helps prevent:** - A) Bone growth - B) Fractures, loosening, and mechanical failure - C) Faster gum healing - D) Reduced tooth alignment 20. **During oral surgery, excessive force can lead to:** - A) Enhanced bone density - B) Trauma and complications - C) Faster tissue recovery - D) Increased patient comfort 21. **Why is proper force control important in orthodontic treatment?** - A) To improve tooth shine - B) To ensure controlled and safe tooth movement - C) To enhance tooth enamel - D) To reduce dentist workload 22. **What is a common e ect of excessive orthodontic force?** - A) Tooth elongation - B) Root resorption - C) Stronger teeth - D) Improved enamel condition 23. **Implant-supported restorations must consider:** - A) Only axial forces - B) Both axial and non-axial forces - C) Tensile forces exclusively - D) Minimal force application 24. **The forces applied during tooth extraction should:** - A) Be as strong as possible - B) Minimize trauma to surrounding tissues - C) Focus on breaking the tooth - D) Increase bleeding 25. **Endodontic procedures require precision to:** - A) Increase tooth size - B) Avoid damage to the canal and surrounding structures - C) Improve tooth aesthetics - D) Reduce root density 26. **Pediatric dental force management considers:** - A) Adult-like application - B) The unique growth and development of children - C) Fast and forceful treatment - D) Reducing patient interaction 27. **Orthodontic appliances are designed to:** - A) Increase enamel density - B) Apply controlled forces for tooth movement - C) Maximize patient comfort - D) Reduce tooth spacing automatically 28. **The main biomechanical consideration in prosthodontics is:** - A) Tooth elongation - B) Proper distribution of forces to prevent failure - C) Increased gum pressure - D) Enhanced jaw strength 29. **What happens if excessive force is applied to dental implants?** - A) The implant becomes more secure - B) The implant may fail due to overload - C) The surrounding bone strengthens - D) The implant fuses more rapidly 30. **Why must forces be controlled during prosthodontic treatment?** - A) To increase prosthesis size - B) To maintain marginal integrity and prevent bone loss - C) To reduce treatment time - D) To avoid gum discoloration Answers LECTURE 2 1. B) Damage to healthy tooth structure 2. B) Controlled compressive force for osseointegration 3. B) Compressive force 4. B) To prevent bone fractures and tissue damage 5. B) Move teeth into desired positions 6. B) Controlled and gradual 7. B) Root resorption 8. B) Prevent fracture or loosening of restorations 9. B) Gentle and controlled to avoid complications 10. B) Ensure successful osseointegration 11. B) Maintain stability and function of prostheses 12. B) The developing teeth and jaw structure 13. B) Bone fractures and tissue damage 14. B) Controlled and gradual 15. C) Minimize risk of complications and ensure long- term stability 16. B) Instrument breakage or root canal damage 17. B) Adjusted for growing tissues 18. B) Equal distribution of applied forces 19. B) Fractures, loosening, and mechanical failure 20. B) Trauma and complications 21. B) To ensure controlled and safe tooth movement 22. B) Root resorption 23. B) Both axial and non-axial forces 24. B) Minimize trauma to surrounding tissues 25. B) Avoid damage to the canal and surrounding structures 26. B) The unique growth and development of children 27. B) Apply controlled forces for tooth movement 28. B) Proper distribution of forces to prevent failure 29. B) The implant may fail due to overload 30. B) To maintain marginal integrity and prevent bone loss

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