▁r idge ▁located ▁at ▁their ▁mid line . ▁N od ular ▁t ori ▁have ▁multiple ▁b ony ▁growth s ▁that ▁each ▁have ▁their ▁own ▁base . ▁Lob ular ▁t ori ▁have ▁multiple ▁b ony ▁growth s ▁with ▁a ▁common ▁base . ▁ ▁C ause ▁Although ▁some ▁research ▁suggest ▁pal atal ▁t ori ▁to ▁be ▁an ▁aut os om al ▁dominant ▁trait , ▁it ▁is ▁generally ▁believed ▁that ▁pal atal ▁t ori ▁are ▁caused ▁by ▁several ▁factors . ▁They ▁are ▁more ▁common ▁in ▁early ▁adult ▁life ▁and ▁can ▁increase ▁in ▁size . ▁In ▁some ▁older ▁people , ▁the ▁size ▁of ▁the ▁t ori ▁may ▁decrease ▁due ▁to ▁b one ▁res or ption . ▁It ▁is ▁believed ▁that ▁t ori ▁of ▁the ▁lower ▁j aw ▁are ▁the ▁result ▁of ▁local ▁str esses ▁and ▁not ▁due ▁sole ly ▁to ▁gen etic ▁influ ences . ▁ ▁Tre at ment ▁Pal atal ▁t ori ▁are ▁usually ▁a ▁clin ical ▁finding ▁with ▁no ▁treatment ▁necessary . ▁It ▁is ▁possible ▁for ▁ul cers ▁to ▁form ▁on ▁the ▁area ▁of ▁the ▁t ori ▁due ▁to ▁repeated ▁tra uma . ▁Also , ▁the ▁t ori ▁may ▁comp licate ▁the ▁fabric ation ▁of ▁dent ures . ▁If ▁removal ▁of ▁the ▁t ori ▁is ▁needed , ▁surg ery ▁can ▁be ▁done ▁to ▁reduce ▁the ▁amount ▁of ▁b one ▁present . ▁ ▁S urg ical ▁removal ▁▁ ▁A ▁max ill ary ▁tor us ▁is ▁only ▁removed ▁in ▁instances ▁where ▁it ▁is ▁problem atic . ▁This ▁includes ▁cases ▁where ▁in ▁an ▁ed ent ul ous ▁patient