Leeway Space Leeway space refers to the size differential between the primary posterior teeth (which include the primary canines, first molars, and second molars) and their permanent successors, specifically the permanent canines and first and second premolars. This space is significant in orthodontics and pediatric dentistry because it plays a...

Keloids 1. Characterized by a progressively enlarging scar. 2. Caused by an abnormal accumulation of collagen at the site of injury. 3. More common in African-Americans.

Conditioning and Behavioral Responses This section outlines key concepts related to conditioning and behavioral responses, particularly in the context of learning and emotional responses in children. 1. Acquisition Acquisition refers to the process of learning a new response to a stimulus through conditioning. This is the initial stage where an...

  Anterior 2/3 of tongue Posterior 1/3 of tongue Motor Innervation All muscles by hypoglossal nerve (CN XII) except palatoglossus muscle (by the pharyngeal plexus) General Sensory Innervation Lingual nerve (branch of mandibular nerve CN V3) Glossopharyngeal nerve (CN IX) Special Sensory Innervation Chorda tympani nerve (branch of facial nerve)...

Histoplasmosis Histoplasmosis is a disease caused by the fungus Histoplasma capsulatum. Its symptoms vary greatly, but the disease primarily affects the lungs. Occasionally, other organs are affected—this form of the disease is called disseminated histoplasmosis, and it can be fatal if untreated. H. capsulatum grows in soil and material contaminated...

Solution Liners (Varnishes) Applications  o    Enamel and dentin lining for amalgam restorations o    Enamel and dentin lining for cast restorations that are used with non adhesive cements o    Coating over materials that are moisture sensitive during setting Components of copal resin varnish o    90% solvent mixture (e.g., chloroform, acetone, and...

Deciduous dentition period. -The deciduous teeth start to erupt at the age of six months and the deciduous dentition is complete by the age of approximately two and one half years of age. -The jaws continue to increase in size at all points until about age one year. -After this,...

Distoangular Impaction Distoangular impaction refers to the position of a tooth, typically a third molar (wisdom tooth), that is angled towards the back of the mouth and the distal aspect of the mandible. This type of impaction is often considered one of the most challenging to manage surgically due to its...

Common Problems in Film Processing 1. Light Radiographs Causes: Under Development: Temperature too low Time too short Depleted developer solution Under Exposure: Insufficient milliamperage Insufficient kVp Insufficient exposure time Film-source distance too great Film packet reversed in the mouth 2. Dark Radiographs Causes: Over Development: Temperature too high Time too...

Pemphigus 1. Ulcerative lesions on the skin and oral mucosa. 2. An autoimmune disease in which patients have autoantibodies against hemidemosomal attachment of epidermis cells. 3. Histologically characterized by acantholysis, in which epidermal cells appear to detach and separate from each other, as seen by Tzanck smears. 4. Can be...

Retention Definition: Retention refers to the phase following active orthodontic treatment where appliances are used to maintain the corrected positions of the teeth. The goal of retention is to prevent relapse and ensure that the teeth remain in their new, desired positions. Types of Retainers Fixed Retainers: Description: These are...

COPPER The normal serum level of copper is 25 to 50 mg/dl. Functions of copper (a) Copper is necessary for iron absorption and incorporation of iron into hemoglobin. (b) It is very essential for tyrosinase activity (c) It is the co-factor for vitamin C requiring hydroxylation (d) Copper increases the...