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Viva Question and Answers Related to  Occlusion

here are 30 viva questions and answers related to occlusion in dentistry:

  1. What is occlusion?
    • Occlusion refers to the contact and interaction between the maxillary and mandibular teeth when the jaws are in functional or static positions.
  1. Why is understanding occlusion important in dentistry?
    • Understanding occlusion is crucial for maintaining proper dental function, preventing issues like malocclusion, and ensuring the longevity of dental restorations.
  1. What are the primary components of occlusion?
    • The primary components include centric occlusion, centric relation, and the dynamic interplay of teeth during various functional movements.
  1. Define centric occlusion.
    • Centric occlusion is the maximum intercuspation of the teeth when the jaws are closed in a static position.
  1. Explain centric relation.
  1. What is the significance of the envelope of motion in occlusion?
    • The envelope of motion describes the range of mandibular movements during various functions like chewing and speaking. Understanding it helps in designing functional and esthetic restorations.
  1. Define occlusal interference.
    • Occlusal interference refers to any contact that disrupts the harmonious occlusal relationship, potentially causing functional or structural issues.
  1. What is the role of the temporomandibular joint (TMJ) in occlusion?
    • The TMJ plays a crucial role in providing a stable and functional foundation for occlusion. Any dysfunction in the TMJ can lead to occlusal problems.
  1. How does occlusion influence the longevity of dental restorations?
  1. Explain the concept of canine guidance.
    • Canine guidance is a type of occlusal guidance where the canines are the only teeth in contact during lateral mandibular movements. It provides stability and prevents lateral forces on posterior teeth.
  1. What is the significance of a mutually protected occlusion?
    • Mutually protected occlusion ensures that the posterior teeth protect the anterior teeth from excessive forces during function, promoting stability and minimizing the risk of damage.
  1. How do you diagnose and manage occlusal parafunction?
    • Occlusal parafunction can be diagnosed through patient history and clinical examination. Management may involve behavior modification, occlusal appliances, and sometimes psychological intervention.
  1. Discuss the role of occlusion in bruxism.
  1. What are the common signs of occlusal instability?
    • Signs may include tooth wear, mobility, muscle pain, temporomandibular joint dysfunction, and headaches.
  1. Explain the importance of occlusal equilibration.
    • Occlusal equilibration involves adjusting the occlusion to create harmonious contact between teeth, ensuring balanced forces during function.
  1. How does occlusion impact the success of prosthodontic treatments?
    • Proper occlusion is critical for the success of prosthodontic treatments, ensuring the stability and longevity of crowns, bridges, and other restorations.
  1. Discuss the concept of group function in occlusion.
    • Group function is a type of occlusal scheme where multiple posterior teeth share occlusal forces during lateral movements, providing stability and minimizing the load on individual teeth.
  1. What is the role of articulators in occlusion studies?
    • Articulators simulate mandibular movements, helping in the study of occlusion and the fabrication of prosthetic restorations.
  1. How does occlusion influence the success of orthodontic treatment?
  1. Discuss the relationship between occlusion and periodontal health.
    • Occlusal factors can contribute to periodontal disease. Imbalances in occlusion may lead to increased forces on certain teeth, potentially causing periodontal issues.
  1. What are the consequences of untreated malocclusion?
    • Untreated malocclusion can lead to problems such as temporomandibular joint disorders, headaches, tooth wear, and compromised oral health.
  1. How can occlusion affect speech?
    • Occlusion plays a role in articulation and phonetics. Malocclusion or improper tooth contact can affect speech patterns.
  1. Discuss the role of occlusion in the success of implant-supported restorations.
    • Proper occlusion is crucial for the success of implant-supported restorations, ensuring even distribution of forces and preventing overloading of individual implants.
  1. Explain the concept of balanced occlusion.
    • Balanced occlusion involves even contacts on both sides of the arch during functional movements, promoting stability and preventing lateral forces on individual teeth.
  1. How do you assess occlusal stability clinically?
    • Clinical assessment involves evaluating static and dynamic occlusion, checking for interferences, and observing the patient’s functional movements.
  1. Discuss the role of occlusion in the etiology of temporomandibular joint disorders (TMD).
    • Occlusal discrepancies can contribute to TMD by causing stress on the temporomandibular joint and surrounding structures.
  1. What is the significance of canine rise in complete dentures?
  1. Explain the importance of occlusion in the success of full-mouth rehabilitation.
    • Proper occlusion is critical in full-mouth rehabilitation to ensure that the restored dentition functions harmoniously, preventing issues like premature wear and failure of restorations.
  1. How does occlusion change with age?
    • Occlusion may change with age due to factors like tooth wear, changes in the temporomandibular joint, and alterations in muscle function.
  1. Discuss the role of occlusion in the prevention of temporomandibular joint dislocation.


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