Distance from the free gingival margin, FGM, to the cement-enamel junction, CEJ
distance from the free gingival margin, fgm, to the cement-enamel junction, cej
Distance from the free gingival margin, FGM, to the cement-enamel junction, CEJ
distance from the free gingival margin, fgm, to the cement-enamel junction, cej