上顎側切歯の盲孔 (dens invaginatus) の基礎的・応用的研究

概要

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Lingual pits of upper lateral incisors are susceptible to caries and dens invaginatus is thoughtto be more susceptible to caries than lingual pits. Moreover, the invaginated incisors with non-cariescause pulp death and lead to radicular granuloma and cyst.<BR>This study was carried out to investigate the reationship between invaginated teeth and caries, andinvaginated teeth and radicular cyst.<BR>Out of 3484 maxillary lateral incisors examined, 108 incisors or 3.1% showed palatal invagination (dens invaginatus). Of the 108 teeth affected, 5 were found with proximal caries but the invaginatedpart was not carious. Only 2 incisors were carious in the invaginated part but the enamel on the bottomof the invagination remained intact. There were 3 prophylactic treatment at theinvagination orifice inthe dens invaginatus.<BR>Eight teeth or 7.4% out of the 108 invaginated incisors led to radicular granuloma or cysts withoutcaries. This means that 0.23% out of all maxillary lateral incisors examined had radiculargranuloma or cysts.
歯科基礎医学会の論文