Bacterial infectious diseases Anthrax - an acute infectious disease caused by the bacteria Bacillus anthracis - Anthrax can enter the human body through the intestines (ingestion), lungs (inhalation), or skin (cutaneous). 1. Pulmonary (pneumonic, respiratory, or inhalation) anthrax Respiratory infection initially presents with cold or flu-like symptoms for several days,...

Lupus erythematosus  - chronic discoid lupus is primarily limited to the skin, while SLE can involve the skin and other systems.  - pathogenesis: light and other external agents plus deposition of DNA (planted antigen) and immune complexes in the basement membrane.  Histology:  - basal cells along the dermal-epidermal junction and...

Psoriasis is a chronic disorder characterized by scaly, erythematous plaques, which histologically are secondary to epidermal proliferation.  - genetic factors (HLA relationships), environmental (physical injury, infection, drugs, photosensitivity), abnormal cellular proliferation (deregulation of epidermal proliferation) and microcirculatory changes in the papillary dermis (diapedesis of neutrophils into the epidermis) are all...

Pit and Fissure Sealants Pit and fissure sealants are preventive dental materials applied to the occlusal surfaces of teeth to prevent caries in the pits and fissures. These sealants work by filling in the grooves and depressions on the tooth surface, thereby eliminating the sheltered environment where bacteria can thrive...

Child Neglect and Munchausen Syndrome by Proxy Overview Child neglect is a serious form of maltreatment that can have profound effects on a child's physical, emotional, and psychological well-being. Understanding the different types of neglect is essential for identifying at-risk children and providing appropriate interventions. Additionally, Munchausen syndrome by proxy...

Serotonin or 5-hydroxytryptamine (5-HT) It is a neurotransmitter, widely distributed in the CNS, beginning in the midbrain and projecting into thalamus, hypothalamus, cerebral cortex, and spinal cord. CNS serotonin is usually an inhibitory neurotransmitter and is associated with mood, the sleep-wake cycle. Serotonin is thought to produce sleep by inhibiting...

Turbid Dentin Turbid Dentin: This term refers to a zone of dentin that has undergone significant degradation due to bacterial invasion. It is characterized by: Widening and Distortion of Dentin Tubules: The dentinal tubules in this zone become enlarged and distorted as they fill with bacteria. Minimal Mineral Content: There...

Titration of a weak acid with a strong base • A weak acid is mostly in its conjugate acid form • When strong base is added, it removes protons from the solution, more and more acid is in the conjugate base form, and the pH increases • When the moles...

The Palate The palate forms the arched roof of the mouth and the floor of the nasal cavities. The palate consists of two regions: the anterior 2/3 or bony part, called the hard palate, and the mobile posterior 1/3 or fibromuscular part, known as the soft palate.

Propofol -Intravenous Anesthetics - A nonbarbiturate anesthetic - It is very lipid-soluble, acts rapidly and has a short recovery time. - It is associated with less nausea and vomiting than some of the other IV anesthetics. - Propofol is very similar to thiopental in its effects on the cardiorespiratory system....

Flucloxacillin, important even now for its resistance to beta-lactamases produced by bacteria such as Staphylococcus species. It is still no match for MRSA (Methicillin Resistant Staphylococcus aureus). The last in the line of true penicillins were the antipseudomonal penicillins, such as ticarcillin, useful for their activity against Gram-negative bacteria

Fillers in composite resin are inorganic particles that enhance the mechanical and optical properties of the material. They come in various sizes, shapes, and compositions. The choice of filler influences the resin's strength, wear resistance, and polishability. Types of fillers: - Silica: Common in microfilled and hybrid composites, providing good...