Water is one of our most important natural resources. Without it, there would be no life on earth. The lifestyle we have become accustomed to depend heavily upon having plenty of cheap, clean water available as well as an inexpensive, safe way to dispose of it after use. Today, we face record consumption, uncertain supplies, and growing demands for protection from flooding and pollution. The health and economic effects of a shortage of clean water are matters of great concern. The supply of water available for our use is limited by nature. Although there is plenty of water on earth, but it is...

Clinical diagnosis has been the main stay of disease diagnosis since ages. Periodontal diagnosis is an important label that the clinician place of patients periodontal condition or disease. Proper diagnosis demands a thorough knowledge of the patient's physical, medical and dental status. The classification of the patient and the correct diagnosis for each individual tooth should form the basis for a pre-therapeutic prognosis and the treatment planning of the individual patient.