For complex classification systems, data is usually gathered from multiple sources of information that have varying degree of reliability. In fact, assuming that the different sources have the same relevance in describing all the data might lead to...
Periodontitis--Age factors; Natural immunity; Age factors in disease
Periodontal disease arises from excessive host inflammatory responses to the tooth-associated microbial biofilm, known as dental plaque. Severity ranges from superficial inflammation of the gingivae (gingivitis) to extensive destruction of...
