n (3:268). Gunsolley et al. note that the majority of treatment studies have dealt with AP, a small number with LJP, and clinical trials of GJP "are almost non-existent" (3:268). Their study of GJP indicated that treatment consistent with AP worked well except that attachment gain in AP subjects was significantly better than in GJP subjects. They also found that, following surgical treatment of GJP, microbiological parameters resembled those in LJP subjects in whom surgery had been required. Gunsolley et al. thus found similarities and differences among the three entities in regard to treatment efficacy that vary as confusingly as the identifying criteria (3:269).
Localized and generalized juvenile periodontitis are, however, easily distinguished in most of their features. LJP subjects present little supragingival plaque or calculus formation. This form of the disease seems to be self-limiting and affects the permanent incisors and first molars (1:57). Accumulating evidence of bone loss preceding the earlier teen years suggests that onset could involve primary dentition but these findings are based on occasional clinical observation and the necessary epidemiological surveys have not been performed (4:367).
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