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Prosthodontics
Explanation: The combination of acrylic resin posterior teeth and porcelain anterior teeth can lead to differential wear and stress concentrations, which may cause resorption of the anterior residual ridge. Porcelain teeth are
Orthodontics
Crowding that occurs after age 18 is typically the result of physiological maturational changes.
Explanation: Dental crowding is a common malocclusion where teeth do not have enough space to align properly in the dental arch. After the age o
Pharmacology
Morphine is contraindicated in head injury for the following reasons:
Causes carbondioxide retention – this in turn increases intracranial tension
Therapeutic doses can cause respiratory depression in head injury patie