Zirconia’s high fracture toughness resists chipping and fracture, making it ideal for posterior crowns under occlusal forces.

porcelain onlay is ideal for a fractured cusp as it preserves tooth structure while providing strength and esthetics. Composite is less durable for large restorations, and a full crown is too invasive.

In the apical third, bypassing the separated file and incorporating it into the obturation is often successful if the canal is clean and the fragment is small. Retrieval is risky in curved canals.

Scaling and root planing is the first-line treatment for periodontitis to remove plaque and calculus, reducing inflammation.

Fluoride varnish significantly reduces caries risk in high-risk children by strengthening enamel and is easy to apply.

Water fluoridation is highly cost-effective, reducing caries by 25–40% across populations with minimal infrastructure.

Resin-modified glass ionomer releases fluoride, reducing secondary caries risk, and is biocompatible for use as a liner in deep cavities.

Pulpotomy with formocresol or MTA is the standard treatment for pulpal exposure in primary teeth to preserve function until exfoliation.

Ethical principles require non-maleficence; the dentist must educate the patient about risks and refuse harmful procedures.

CBCT provides 3D imaging to assess bone volume and anatomy for implant planning, unlike 2D radiographs.

Complex odontomas appear as radiopaque masses with a radiolucent rim, typically in the mandible, and are benign.

An open contact allows food to lodge between the pontic and abutment, causing impaction and discomfort.

Periodontal maintenance involves regular monitoring, scaling, and patient education to prevent disease recurrence.

The adhesive bond between the veneer and enamel ensures retention and longevity, making it the most critical factor.

Gracey curettes are designed for root planing, with area-specific blades for effective subgingival calculus removal.

Reflecting a flap allows safe removal of the fractured root, preventing infection or cyst formation.

Root resorption, particularly of the apical third, is a common side effect of orthodontic forces, especially with prolonged treatment.

Phenytoin, an anticonvulsant, is a common cause of drug-induced gingival hyperplasia, leading to generalized gingival enlargement.

Pericoronitis, often associated with impacted third molars, causes unilateral swelling and trismus due to inflammation of the operculum.

Neutropenia impairs immune response, increasing susceptibility to aggressive periodontitis, especially in younger patients.

Polyglactin is resorbable, biocompatible, and ideal for intraoral use as it degrades naturally, eliminating the need for suture removal.

The lingual nerve, located near the third molar, is commonly injured during extraction, causing paresthesia of the tongue.

A rapid palatal expander corrects posterior crossbite in growing children by widening the maxilla.

MTA has superior biocompatibility and sealing properties compared to calcium hydroxide, promoting dentin bridge formation in direct pulp capping.

porcelain onlay is ideal for a fractured cusp as it preserves tooth structure while providing strength and esthetics. Composite is less durable for large restorations, and a full crown is too invasive.