31789

Gout is a form of arthritis caused by the accumulation of uric acid crystals, specifically sodium urate crystals, in the joints. The body produces uric acid as a waste product during the metabolism of purines, which are substances found in certain foods and also synthesized by the body. High levels of uric acid can lead to the formation of these crystals, which cause inflammation and pain in the affected joints. Urea (Answer 1) is a waste product formed from the metabolism of proteins and amino acids, while guanine (Answer 3) and hypoxanthine (Answer 4) are purine bases involved in nucleotide metabolism, but they do not directly form the crystals seen in gout.

15268

Kobayashi hooks are auxiliary ligature wires with a spot-welded hook used to attach elastics to brackets that do not have integral hooks.

87155

Activation of muscle contraction is promoted by : Opening of the sarcoplasmic reticulum Ca channel. Ca2+ binding to troponin C. Opening of Na channels Ca²⁺ binding to the Ca²⁺-ATPase

89432

Both sonic and ultrasonic instruments are used in dental procedures, particularly in endodontics and scaling. They generate vibrations that help in the removal of debris and biofilm. A key feature of these instruments is that they require the use of copious amounts of irrigating solutions to enhance their effectiveness, cool the instrument, and flush out debris. While they may also be used for flaring coronal portions of root canals and can be controlled during operation, the commonality that stands out is the need for irrigating solutions.

71390

19464

The OHI-S index has a high degree of correlation with the PI of Russell.

90755

Among the given choices, the advantage of a sagittal split osteotomy over a transoral vertical subcondylar osteotomy is that it allows for greater mandibular movement. The sagittal split osteotomy is a surgical technique used in orthognathic surgery to reposition the mandible in cases of severe skeletal discrepancies. It involves splitting the mandible along the midline and moving the two halves apart, which can provide significant advancement or setback of the lower jaw. This technique may be used to correct both mandibular prognathism and retrognathism, making it a versatile option in orthognathic surgery. Additionally, it is associated with fewer complications compared to the transoral vertical subcondylar osteotomy, which involves cutting through the medullary bone of the condyle and can pose a higher risk of injury to the facial nerve and other vital structures. However, it's important to note that the choice of surgical approach is determined by the specific case and the individual patient's needs.

40517

Proteus bacilli are known for their characteristic swarming motility on agar and a distinctive odor, which is often described as fishy or seminal. This is due to the production of ammonia and indole as metabolic byproducts.

64824

The 30-degree occipitomental view is best for viewing both the rim and floor of the orbit.

13867

Tetracycline is often prescribed for juvenile periodontitis (also known as aggressive periodontitis) due to its effectiveness against the specific bacteria involved in the condition, such as Aggregatibacter actinomycetemcomitans.