Prosthetics & Dentures Flashcards

What is the most common cause of denture stomatitis (Newton Type II)?

Answer: Candida albicans infection under the denture

Denture stomatitis is predominantly caused by Candida albicans colonising the fitting surface of the denture and inflaming the underlying mucosa, especially with overnight wear.

When recording the occlusal vertical dimension (OVD) for a complete denture, which clinical sign is used?

Answer: Freeway space (rest vertical dimension minus OVD = 2–4 mm)

Freeway space (interocclusal rest space) of 2–4 mm is the difference between RVD (rest position) and OVD; this guides correct vertical dimension for complete dentures.

What is the neutral zone in complete denture construction?

Answer: The zone where muscular forces from lips, cheeks, and tongue are balanced

The neutral zone is the space in the edentulous mouth where the inward forces of cheeks and lips are balanced by the outward force of the tongue, guiding denture tooth position.

Which occlusal scheme is most commonly prescribed for complete dentures?

Answer: Balanced occlusion

Balanced occlusion (bilateral balanced articulation) is the most appropriate complete denture occlusal scheme, providing stability during excursive movements by maintaining contacts on both sides.

What is the primary purpose of posterior palatal seal in a complete upper denture?

Answer: Maintain peripheral seal and retention

The posterior palatal seal (post dam) creates a continuous seal at the junction of the hard and soft palate, preventing air entry and improving denture retention by suction.

What clinical sign indicates that the occlusal vertical dimension has been set too high in a new complete denture?

Answer: Clicking teeth on speaking and reduced freeway space

If OVD is excessive, the freeway space is reduced or absent, causing teeth to contact during speech (clicking), muscle fatigue, and temporomandibular joint discomfort.