In combination with the use of conventional orthodontic appliances, interseptal bone reduction can enhance the rate of canine movement when interseptal bone is sufficiently reduced in both thickness and depth following surgical criteria.

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Non-Hodgkin's lymphoma (NHL) of the oral cavity frequently occurs in patients infected with human immunodeficiency virus (HIV). This report describes a lesion presenting as delayed healing of an extraction wound with hyperaemic swollen gingivae and ulceration in an apparently healthy 34-year-old Thai fisherman. The lesion was the first evidence of his HIV-positivity. It is, therefore, imperative that clinicians should consider a diagnosis of HIV infection in cases of non-healing extraction wounds in patients in high risk categories.

Burkitt‐like lymphoma of the oral cavity is relatively uncommon in patients with acquired immunodeficiency syndrome (AIDS). The lesion usually appears as a solitary ulcerated mass with rapid onset. Some may present initially as gingival inflammation which delays final diagnosis and treatment. This report describes the presentations of multifocal intraoral Burkitt‐like lymphoma in two Thai heterosexual men with AIDS. The clinical features and the radiographic findings in both cases mimicked a periodontal disease, showing extensive widening of the periodontal ligament space and loss of lamina dura in all segments of the molar teeth. The patients eventually died 5 and 14 months after they were diagnosed with HIV infection.

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