No root resorption or eruption was noted. The patient was lost to follow-up 18 months after presentation. No familial record was obtained. It was determined that both LJP and supernumerary teeth are uncommon but have a familial incidence, and their coexistence in these and other cases raises the possibility that they may be associated in a small minority of cases. Localized juvenile periodontitis exhibits a strong familial pattern, though no clear inheritance pattern has been identified.
Supernumerary teeth exhibit a familial prevalence.
Supernumerary premolars have different patterns than other supernumerary teeth, and it is suggested that they arise as post-permanent teeth. Both premolar supernumeraries and LJP are known to follow a familial pattern, and it may be hypothesized that some of the responsible genes may be linked, or such association may be simply a chance association. The similarity between these two cases and the previous cases raises a possible etiological connection. Reporting of further cases, however, will be required to establish any significant hypotheses.