Normal healthy gingiva with a deep cleft over the mesiobuccal root of upper fourth pre-molar
The factors that predispose various individuals to periodontal disease are many and varied.
They fit broadly into three categories:
The susceptibility of the individual based on the bacterial challenge provided and the defence systems available to fight it
The anatomical shape of the head and location of individual teeth
© 2002 eMedia Unit RVC v1.0
