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Mataftsi M, Skoura L et al. Oral Dis 2011; 17: 13–25

Linear gingivitis erythema and other periodontal clinical observations have been associated with HIV infection. However, studies exploring these findings are ambiguous. For example, when studying the oral microflora of HIV-infected individuals with periodontal diseases, 1) some papers report there is an increased occurrence of putative periodontal pathogens, 2) others a decreased number, and 3) yet others identified opportunistic microbial species. Nevertheless, studies are cited that suggest periodontal diseases 'could act as a risk factor for HIV reactivation in infected individuals'. It may be premature to make inferences in 'the post-HAART era', because of lack of power in published studies. However, immune reconstitution inflammatory syndrome (IRIS) is a putative link between periodontal diseases and HAART. This is when an inflammatory condition (such as periodontal disease) can be exacerbated as a consequence of HAART.