isolated abutment

i·so·lat·ed a·but·ment

a lone-standing tooth, or root, used as an abutment with edentulous areas mesial and distal to it.

i·so·lat·ed a·but·ment

(īsŏ-lā-tĕd ă-bŭtmĕnt)
Lone-standing tooth, or tooth root, used as an abutment with edentulous areas mesial and distal to it.