ACQUIRED IMMUNODEFICIENCY SYNDROME
1. Characteristics Of AIDS. Acquired immunodeficiency syndrome
infectious disease caused by human immunodeficiency virus (HIV). People with acquired immune deficiency syndrome are at increased risk of developing certain cancers and infections that usually occur only in people with a weakened immune system.
2. Linear Gingival Erythema
A. characteristics LGE
1. In gums manifestations of HIV infection were formerly known as HIV-associated gingivitis, but currently defined as linear gingival erythema. Linear gingival erythema (LGE) has 2 - 3 mm with a border intense erythema (redness) free gum  (Fig. 10-4).
2. Band erythema gums may extend into the attachment of the gums and/or outside mucogingival line in alveolar mucosa .
3. LGE may be localized to one or two teeth, but more often generalized condition of the gums.
4. LGE not ordinarily plaque biofilm control and periodontal instruments [9-11].
5. With the advent of antiretroviral therapy for HIV-positive patients, the prevalence of HIV-specific lesions decreased significantly .
B. etiology LGE
1. Etiology LGE is not well understood.
2. Studies show that organisms, usually not associated with gingivitis, such as Candida associated with LGE .
3. In addition, LGE defeats reduced proportion of t cells and macrophages and increasing the amount of IgG, plasma cells and PMNs .
4. These host cell responses and unusual organisms associated with LGE may be responsible for responding nature LGE plaque biofilm control and periodontal instruments.