
Periodontitis is a group of inflammatory diseases that affect the connective tissue attachment and supporting bone around the teeth. A number of possible pathogens have been detected on the basis of their association with disease progression and also because of their possession of virulence factors which can damage the tissues. Attempts to relate microbiological data to clinical events have proved difficult due to the variability and unreliability of clinical diagnostic methods. “Periodontal diagnosis” is an important tag that a clinician ties on the periodontal disease condition of the patient, capturing all his past experience with the condition in question. Currently, the clinical parameters that are used to diagnose active periodontitis exhibit poor accuracy and reliability. Modern in-office diagnostic methods are clinical parameters of destructive periodontal disease such as longitudinal assessment of changes in pocket depth or attachment level, radiographic bone loss, bleeding on probing, suppuration, plaque scores, tooth mobility and patient reports of pain to detect disease. This review is an attempt to summarize the current status of chair side diagnostic tests in the field of periodontology. For that last 10 years articles were collected through search engine.