Juvenile periodontitis occurs mainly in adolescence 13 to 25 year olds, no obvious early symptoms, treatment often has 20 years of age, the incidence of women than men. Generally good oral hygiene, plaque of patients early, less the amount of calculus, gingival inflammation, mild, but deep periodontal pockets, periodontal tissue damage and the amount of stimulus is not a local one: seven cases, inflammation of the gums were not significantly , is easily bleeding on probing, periodontal abscess can occur late.
Upper and lower first permanent molars and incisors, known as the limitations of juvenile periodontitis. Canine and premolar area rarely involved, mostly symmetrical. If the diffuse juvenile periodontitis may invade the majority of all 13 teeth. By X-ray shows the first molar absorption near-and far in both the vertical, forming a typical "arc absorption"; in the incisor area and more horizontal type of bone absorption. Can still see the gap widened periodontal ligament, bony dental instruments plates blurred, osteoporosis and other bone trabeculae. The patient's periodontal destruction faster than adult 3 to 4 times faster, at 4 to 5 years, periodontal attachment damage of 50% to 70%. Patients often around the age of 20 must be off on their own tooth or teeth. The early stage Period to help children through the permanent teeth of loose teeth and displacement is common in the maxillary anterior teeth, fan, can occur after a tooth gap, so as to cause food impaction.
Often more than the family illness, the patient's siblings, 50% chance of falling ill, the maternal inheritance of many genetic background may be related to leukocyte dysfunction and other factors.
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