Mock Exam BDS 1st Year 2025

The developmental stages of teeth are named after the shape of;

• Dental papilla.

• Dental sac.

• Dental lamina.

• Epithelial component.

• Vestibular lamina.

The 'Dental Sac' will give rise to;

• Ameloblasts & Enamel.

• Odontoclasts.

• Pulp & Dentin.

• Cementum, Periodontal ligament & Alveolar Bone.

• Odontoblasts.

In 'Cap Stage' of tooth development, the cells of 'Inner Enamel Epithelium' are;

• Tall Columnar & in Concavity.

• Cuboidal & in Concavity.

• Tall Columnar & in Convexity.

• Cuboidal & in Convexity.

• Flattened cells.

A key feature of the initiation of tooth development is the formation of which of the following within the 'Primary Epithelial Bands'?

• Mesenchymal invaginations.

• Endodermal tubercles.

• Ectodermal lens.

• Placodes.

• Tuberculum mediatus.

Ectodysplasin (Eda) mutation leads to;

• Hyperdontia.

• Anodontia.

• Cleft lip.

• Oligodontia.

• Hypodontia.

A prime candidate for the induction of Lhx genes is;

• Fgf-6.

• Fgf-7.

• Fgf-8.

• Fgf-12.

• Fgf-1.

Which of the following can be regarded as one of the fragmentized product of dental lamina?

• Dentigerous cyst.

• Odontogenic keratocyst.

• Eruption cyst.

• Periapical cyst.

• Stafne's bone cyst.

In normal physiological architecture of the supporting apparatus of the tooth, 'Epithelial cell rests of Malassez' reside within the mature periodontal ligament. What is their function in this case?

• Inflammation.

• Mechanoreception.

• Repair & Regeneration.

• Collagen degradation.

• Attachment of PDL to alveolar bone.

Which one of the following structures serves as an organizational centre which orchestrates 'Cuspal Morphogenesis'?

• Enamel niche.

• Enamel pearl.

• Enamel knot.

• Enamel lamellae.

• Enamel tufts.

Tooth eruption is a process which is void of any bleeding incidence normally. This is because the epithelial barrier it crosses is;

• Aneural.

• Avascular.

• Demineralized.

• Anodontic.

• Highly mineralized.