PMID: 9178977Apr 1, 1996Paper

Periodontics into the 21st century

Annals of the Royal Australasian College of Dental Surgeons
G J SeymourM Cullinan

Abstract

In recent years advances in clinical techniques and procedures such as guided tissue regeneration and implants, have dominated periodontics. However, as we move towards the 21st century, emphasis is swinging 'back to basics' with the recognition that patient susceptibility to periodontal disease determines the ultimate outcome not only of the disease process but also of the treatment undertaken. In this context attention is returning to the host response and with the advent of clonal and molecular biological techniques, new insights are being gained into the nature of host susceptibility. Previous studies have suggested that a T-cell/macrophage immunoregulatory imbalance may exist locally in the periodontitis lesion and that this imbalance may be antigen specific. More recently, T-cell subsets have been dichotomized on the basis of their cytokine profiles. In general, Th1 cells produce IL-2 and IFN-gamma while Th2 cells produce IL-4, IL-5 and IL-6. The major function of Th1 cells is to mediate delayed type hypersensitivity. In contrast the major function of Th2 cells is to provide B-cell help. A model for periodontal disease has now been developed based on this functional dichotomy which provides a framework for the study of cy...Continue Reading

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