The purpose of the NIDCR Short-term Mentored Career Enhancement (K18) awards in dental, oral, and craniofacial (DOC) research is to provide mid-career and senior investigators with short-term (2.5 months up to 12 months project period) career development experiences in the theories, tools, methods, or approaches of another scientific area to enhance their existing research programs and to broaden opportunities for research experiences and collaborations. Two categories of candidates are targeted: (a) established DOC research investigators who seek training with investigators from another field to enrich their existing DOC research program; and (b) established investigators in other fields who seek training with DOC research investigators to facilitate the introduction of DOC research into an existing research program.This Funding Opportunity Announcement (FOA) is designed specifically for candidates proposing research that does not involve leading an independent clinical trial, a clinical trial feasibility study, or an ancillary clinical trial. Under this FOA candidates are permitted to propose a research experience in a clinical trial led by a mentor or co-mentor.