interfirst
adjEtymology From inter- + first. A recent coinage; see usage notes.
1
Nonstandard Between the members of the first pair of specified things (such as premolars or molars).
- Further corroborating these findings, Vajaria el al 11 also found expansion in interfirst premolar distances.2015, Marcio Rodrigues de Almeida et al., “Dentoalveolar mandibular changes with self-ligating versus conventional bracket systems: A CBCT and dental cast study”, in Dental Press Journal of Orthodontics, volume 20, →DOI: