Invasive aspergillosis of the maxilla in an immunocompromised patient.

Patients who are immunocompromised have a high susceptibility to infection, which can be fatal. Studies have shown that patients receiving chemotherapeutic and adjunctive medications have inhibited inflammatory response to microbes, particularly those increasing the potential for the development of invasive infection. Aspergillus is a fungus often found in the atmosphere.

Intraoral manifestation of thromboangiitis obliterans (Buerger's disease).

A case of thromboangiitis obliterans (Buerger's disease) showing vascular lesions in the oral cavity is presented. To our knowledge, this is the first report of involvement of branches of the external carotid artery with this disease. The clinical, radiographic, plethysmographic, and histologic features of Buerger's disease are presented.

Effect of stretching on the physical properties of stainless steel wire.

Stretching of 25-gauge stainless steel wire causes alterations in the physical properties of the wire. The yield strength and ultimate tensile strength are increased and the elasticity is decreased. These alterations make stretched wire more satisfactory for maxillofacial surgical applications than unstretched wire.