Furcation entrance dimensions of the first and second mandibular molars among Jordanians.

Purpose: The complexity of molar furcation areas provides a challenge for periodontal treatment that leads to more tooth loss when compared to other tooth types. Furcation entrance dimension (FED) of molar teeth affects treatment outcomes and prognosis considerably. The aim of the present study was to determine the FED in first and second mandibular molars among Jordanian adults and to assess the relationship to gender.