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In orthodontic mechanics, there is a 1:1 ratio; for every 1mm of incisor retraction, 1mm of space is required in the arch.

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In orthodontics, pitch refers to rotation around the transverse (side-to-side) axis, leading to an upward or downward rotation of the jaws or occlusal plane, which alters the vertical dimension.

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Pellagra is a disease caused by a severe deficiency of niacin (vitamin B3). It is classically characterized by the "three Ds": dermatitis, diarrhea, and dementia. If left untreated, it can lead to death, the fourth "D". Dermatitis: A symmetrical skin rash often appears on areas exposed to sunlight. Diarrhea: Gastrointestinal issues are common. Dementia: Neurological symptoms can include confusion, disorientation, and memory loss.

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Lateral throat form occupied by retromylohyoid flange in lower denture should be large, one-half inch.

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In achondroplasia, the cartilage columns lack orderly arrangement and fail to calcify properly.

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Cholic acid is a primary bile acid, while deoxycholic acid and lithocholic acid are secondary bile acids formed by bacterial action in the colon.

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The characteristic translucency of the incisal portion of natural teeth, is achieved in porcelain restorations by the addition of enamel porcelain

82002

Phase III studies are randomized controlled multicenter trials on large patient groups (300–3,000 or more depending upon the disease/medical condition studied) and are aimed at being the definitive assessment of how effective the drug is, in comparison with current 'gold standard' treatment.

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Explanation: Iontophoresis is a technique that uses a small electric current to drive charged substances (ions) into tissues. In dentistry, it is often used to deliver fluoride ions into the tooth structure, and it specifically encourages negative ions to penetrate.