Background: Inquiring thoroughly and systematically for evidence supporting the mechanism, time span, onset, or ending events of generalized aggressive periodontitis. The aim of the current retrospective cross-sectional study was to set temporal boundaries of the generalized form of aggressive periodontitis based on eruption time of permanent teeth via panoramic radiographs. Methods: based on the Egyptian chronology, the primary outcome of the current retrospective study was to assess the correlation between the eruption sequence and the temporal borders of the disease as well as the prevalence of destructive events in accordance to the eruption schedule. The first affected tooth, the last affected tooth, the first unaffected tooth, the number of affected teeth, the presence of interrupted tooth all are factors that extracted from the panoramic radiographs.
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the radiographic eruption date of the first and the last affected teeth
Timeframe: 4 years