Mandibular diastema does not occur often, however, its abnormal characteristics have more disturbing implications. A major etiologic factor for mandibular diastema are pernicious habits associated with tongue thrust in a low rest position. The aim of this study is to report the approach and effects of intercepting the deleterious habit of tongue interposition and tongue thrust swallowing and the resultant periodontal changes. Tongue interposition and tongue thrust swallowing in lower jaw may

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... d to gingival recession, loss of alveolar bone, tooth mobility and diastema. Early termination of bad habits allows for prevention of periodontal problems and possibility of regeneration of soft and hard tissues. In the case study reported intercepting the tongue thrust on lower incisors led to the restoration of alveolar bone, reversing the recession and a spontaneous self-correction of the 7-mm diastema. Thus loss of teeth due to the periodontal problem was prevented and periodontal surgery to restore the level of the bone and gingiva was avoided..