27960

The knife-edge finish line may be difficult to detect on the tooth in an impression or on the die because it creates a very fine, feather-edge margin that can be easily damaged during impression taking or die pouring. This delicate margin is prone to chipping and may not reproduce accurately, making it challenging to identify precise margins.

95664

The setting time for gypsum products can range from a few minutes for impression plaster to up to 30 minutes for some dental stones, depending on the specific formulation and water to powder ratio.

84799

Hypersensitivity to the drug is a contraindication to the use of local anaesthetic agent.

28511

37071

The recommended suturing method for interproximal areas of diastemata is horizontal mattress suture.

19389

Newly erupted enamel is highly susceptible to caries. Applying fluoride varnish immediately after tooth eruption strengthens enamel during the maturation phase.

23333

In pneumothorax, breath sounds are absent

33240

37310

Vitamin D deficiency is most commonly due to insufficient exposure to sunlight, as the skin synthesizes vitamin D when exposed to UVB radiation. Other factors include poor dietary intake and impaired conversion or absorption in the liver and kidneys.

92420

Contraindications for activator include high FMA angle, severe protruded maxilla, and severe crowding. It is indicated for growing patients.