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Viva Question and Answers Related to Dental Anatomy

Here are 50 potential viva questions and answers related to dental anatomy:

  1. Question: What is the primary function of teeth in the oral cavity?
    • Answer: The primary function of teeth is to assist in the mechanical breakdown of food during mastication or chewing.
  2. Question: Name the four types of human teeth.
    • Answer: Incisors, canines, premolars, and molars.
  3. Question: Define the term “occlusion” in dental anatomy.
    • Answer: Occlusion refers to the contact between the maxillary and mandibular teeth when the jaws are closed.
  4. Question: What is the dental formula for the permanent dentition in humans?
    • Answer: 2-1-2-3/2-1-2-3.
  5. Question: Differentiate between deciduous and permanent teeth.
  6. Question: What is the function of the periodontal ligament?
    • Answer: The periodontal ligament attaches the tooth to the alveolar bone and provides support during mastication.
  7. Question: Describe the structure of enamel.
    • Answer: Enamel is the outermost layer of the tooth, primarily composed of hydroxyapatite crystals, making it the hardest substance in the human body.
  8. Question: What is the function of dentin in a tooth?
    • Answer: Dentin provides support to the enamel and forms the bulk of the tooth structure. It is less hard than enamel but harder than cementum.
  9. Question: Define the term “crown” in dental anatomy.
    • Answer: The crown is the visible part of the tooth above the gumline.
  10. Question: Explain the process of tooth eruption.
  11. Question: What is the function of the pulp chamber in a tooth?
    • Answer: The pulp chamber contains the dental pulp, which includes nerves and blood vessels, providing nutrients and sensory functions to the tooth.
  12. Question: Differentiate between the functions of incisors and canines.
    • Answer: Incisors are primarily used for cutting, while canines are designed for tearing and piercing.
  13. Question: What is the role of cementum in dental anatomy?
    • Answer: Cementum covers the tooth roots, providing attachment for the periodontal ligament and anchoring the tooth in the alveolar bone.
  14. Question: Explain the term “mesial” in dental terminology.
    • Answer: Mesial refers to the side of the tooth that is closer to the midline of the dental arch.
  15. Question: How many roots do most maxillary first premolars have?
    • Answer: Most maxillary first premolars have two roots.
  16. Question: What is the function of salivary glands in the oral cavity?
    • Answer: Salivary glands produce saliva, which helps in the lubrication of food, initiation of digestion, and maintenance of oral health.
  17. Question: Define the term “cusp” in dental anatomy.
    • Answer: A cusp is a pointed or rounded elevation on the occlusal surface of a tooth.
  18. Question: What is the function of the temporomandibular joint (TMJ)?
    • Answer: The TMJ allows for the movement of the jaw, enabling activities such as chewing, speaking, and facial expressions.
  19. Question: Explain the term “dental caries.”
    • Answer: Dental caries, commonly known as cavities, is the demineralization of tooth structure caused by acids produced by bacteria in dental plaque.
  20. Question: Name the different surfaces of a tooth.
  21. Question: What is the function of the lingual frenulum?
    • Answer: The lingual frenulum is a fold of mucous membrane that limits the movement of the tongue and helps stabilize its position.
  22. Question: What is the importance of the gingiva in dental health?
    • Answer: The gingiva (gums) protects the underlying tooth structures and provides a seal around the teeth to prevent bacterial invasion.
  23. Question: How does the eruption sequence differ between the maxillary and mandibular teeth?
    • Answer: Mandibular teeth generally erupt before their maxillary counterparts.
  24. Question: Describe the location of the palatine rugae.
    • Answer: The palatine rugae are transverse ridges located on the hard palate behind the incisive papilla.
  25. Question: What is the function of the incisive foramen?
    • Answer: The incisive foramen allows for the passage of blood vessels and nerves to the anterior part of the hard palate.
  26. Question: Explain the term “contact area” in dental anatomy.
    • Answer: The contact area is the area where adjacent teeth touch each other in the same arch, promoting stability and preventing food impaction.
  27. Question: How do the cusp patterns differ between maxillary and mandibular molars?
    • Answer: Maxillary molars typically have three roots and three cusps, while mandibular molars often have two roots and two or three cusps.
  28. Question: Define the term “trigone” in dental anatomy.
    • Answer: The trigone is the triangular-shaped area on the occlusal surface of molars formed by the convergence of the cusps.
  29. Question: What is the function of the uvula in the oral cavity?
    • Answer: The uvula helps in the closure of the nasopharynx during swallowing and speech.
  30. Question: Explain the term “papilla” in dental anatomy.
  31. Question: How does the root structure differ between maxillary and mandibular premolars?
    • Answer: Maxillary premolars typically have two roots, while mandibular premolars often have one root.
  32. Question: What is the function of the parotid glands in saliva production?
    • Answer: The parotid glands produce serous saliva, which is watery and rich in enzymes, aiding in the initial digestion of food.
  33. Question: Describe the location of the mental foramen.
    • Answer: The mental foramen is located on the anterior aspect of the mandible, near the apex of the premolars, allowing for the passage of blood vessels and nerves.
  34. Question: What is the purpose of the circumvallate papillae on the tongue?
    • Answer: Circumvallate papillae contain taste buds and are involved in the perception of taste.
  35. Question: Explain the term “embrasure” in dental anatomy.
    • Answer: An embrasure is the triangular space formed by the curvatures of adjacent teeth surfaces, particularly on the facial or lingual aspects.
  36. Question: How do the functions of the masseter and temporalis muscles differ in mastication?
    • Answer: The masseter primarily elevates the mandible, while the temporalis assists in both elevation and retraction.
  37. Question: Define the term “canine guidance” in occlusion.
    • Answer: Canine guidance is a type of occlusion where the guidance during jaw movement is primarily provided by the canines.
  38. Question: What is the significance of the median palatine raphe in dental anatomy?
    • Answer: The median palatine raphe is a fibrous band in the midline of the hard palate, providing structural support.
  39. Question: How is the numbering system for permanent teeth different from deciduous teeth?
    • Answer: Permanent teeth are numbered 1-32, while deciduous teeth are numbered A-T in each quadrant.
  40. Question: Explain the term “gingival sulcus.”
  41. Question: What is the role of the dental papilla during tooth development?
    • Answer: The dental papilla is responsible for the formation of dentin and pulp tissue within the developing tooth germ.
  42. Question: Describe the composition of saliva.
    • Answer: Saliva is composed of water, electrolytes, mucus, enzymes (e.g., amylase), and antimicrobial agents.
  43. Question: Differentiate between primary and secondary dentin.
    • Answer: Primary dentin forms during tooth development, while secondary dentin is produced throughout the life of the tooth in response to stimuli.
  44. Question: What is the significance of the attached gingiva in periodontal health?
    • Answer: The attached gingiva is firmly bound to the underlying bone, providing stability and resistance to mechanical forces during mastication.
  45. Question: How does the shape of the incisal edge differ between maxillary central and lateral incisors?
    • Answer: The incisal edge of maxillary central incisors is usually more symmetrical, while the lateral incisors may exhibit more variations.
  46. Question: Explain the term “dental arch.”
    • Answer: A dental arch is the curved arrangement of teeth in either the maxilla or mandible.
  47. Question: What is the role of the enamel organ during tooth development?
    • Answer: The enamel organ gives rise to enamel-producing cells called ameloblasts, essential for enamel formation.
  48. Question: Define the term “gingival recession.”
    • Answer: Gingival recession is the exposure of the tooth root surface due to the apical migration of the gingival margin.
  49. Question: How do the roots of maxillary molars differ from those of mandibular molars?
    • Answer: Maxillary molars typically have three roots (mesiobuccal, distobuccal, and palatal), while mandibular molars commonly have two roots (mesial and distal).
  50. Question: What is the function of the palatal rugae in dental anatomy?

These questions cover a range of topics within dental anatomy and should provide a comprehensive review for a viva examination.

 

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