PROBLEM TO BE SOLVED: To provide a dental abutment which has less fear for allergy, is easy to be inserted in the root canal while having a proper hardness (elasticity), and by which the breakage or the like of a tooth is hard to occur even during use for a long period of time.SOLUTION: A dental abutment 1 includes: an inserting-fixing section 2 which is inserted in the root canal of a remaining natural tooth and fixed and a supporting section 3 which is continuously formed from the inserting-fixing section in a manner to protrude to the outside of the root canal from the opening of the root canal, and supports an artificial tooth section. The inserting-fixing section 2 and the supporting section 3 are constituted of an integrally molded article of a resin containing 50 wt.% or more of a polyolefin resin as the major component, and especially of the integrally molded article of a resin of which the major component is a polypropylene containing 50 wt.% or more of a polypropylene.COPYRIGHT: (C)2014,JPO&INPIT【課題】アレルギーのおそれが少なく、適度な硬さ(弾性)を有して根管に挿入しやすく、長期的な使用のもとでも歯牙の破損などが生じにくい歯科用支台を提供する。【解決手段】歯科用支台1は、残存する天然歯の根管に挿入されて固定される挿入固定部2と、根管の開口からその根管の外側へ突出するように挿入固定部から連続して形成されて人工歯部を支持する支持部3と、を備える。挿入固定部2と支持部3とは、ポリオレフィン樹脂を50重量%以上の主成分とする樹脂の一体成形品で、特にポリプロピレンが50重量%以上を占めるポリプロピレンを主成分とする樹脂の一体成形品で構成される。【選択図】図1
