ADEX Trivia 4

Question 1

Which vitamin deficiency is most closely associated with scurvy and impaired collagen synthesis affecting the periodontium?

Accepted Answer

Vitamin C

Answer

Vitamin C (ascorbic acid) is essential for collagen synthesis; its deficiency causes scurvy, which manifests as inflamed, bleeding gingiva.

Question 2

What is the average eruption age of the mandibular central incisors in primary dentition?

Accepted Answer

6–10 months

Answer

The mandibular central incisors are typically the first primary teeth to erupt, appearing around 6–10 months of age.

Question 3

Which type of epithelium lines the oral mucosa of the hard palate?

Accepted Answer

Stratified squamous keratinized

Answer

The hard palate is covered by stratified squamous keratinized epithelium, which withstands the mechanical stress of chewing.

Question 4

What does the abbreviation 'OHI' stand for in dental hygiene practice?

Accepted Answer

Oral Health Instruction

Answer

OHI stands for Oral Hygiene Instruction, which refers to patient education on effective plaque removal techniques.

Question 5

Which instrument adaptation technique places the terminal 1–2 mm of a curette against the tooth surface?

Accepted Answer

Toe-third adaptation

Answer

Toe-third (or terminal third) adaptation ensures only the working end tip contacts the tooth to prevent soft tissue trauma.

ADEX - Dental Hygiene Exam Practice Test