50131

A thin bluish line around the gingival margin is due to the absorption of lead.

35960

The elastic range of a wire is the amount of deflection it can withstand before permanent deformation occurs. It is the difference between the elastic limit and the ultimate tensile strength.

11320

Kaposi's sarcoma is a disease characterized by vascular lesions caused by an infection with the human herpesvirus 8 (HHV-8). This virus is also known as the Kaposi sarcoma-associated herpesvirus (KSHV). The virus encodes several proteins involved in cell proliferation and antiapoptotic functions, which contribute to the pathogenesis of the sarcoma. 

58736

Flexible partial dentures reduce the leverage effects on abutment teeth due to their inherent material properties. However, a major disadvantage of long-span flexible major connectors is that their increased flexibility can lead to excessive forces being transmitted to the underlying residual ridge and the periodontal ligament of the abutment teeth, as the force is less distributed compared to a rigid connector. This can accelerate residual ridge resorption and damage the abutment teeth. 

30559

Thrombocytopenic purpura is a condition characterized by a low platelet count, which impairs the body's ability to clot blood effectively. When a patient with this condition undergoes a tooth extraction, the primary risk is excessive bleeding due to the clotting deficiency. Therefore, haemorrhage is the most common and significant postoperative complication

53257

The half moon shape is ideal for canine rests as it provides adequate support and stability for the removable partial denture.

41830

Killian's dehiscence is a weak area in the laryngopharynx. Outpouching here leads to Zenker's diverticulum.

82294

98165

Aggressive periodontitis is characterized by rapid attachment loss and bone destruction, but the amount of microbial deposits (plaque and calculus) is typically inconsistent with the severity of the destruction, often appearing minimal. The other options (deep pockets in all areas, increased mobility without clinical signs, widespread gingival recession) are general signs of periodontal disease but not specific diagnostic features that differentiate aggressive from chronic forms.

62878

The offset angle of a Gracey curette between the blade and shank is 60 degrees.