远中面 meaning in English

distal surface
distalsurface

A18 year old male patient , mesial lesion in relation to 26 . mesial and distal amalgam restorations with marginal deterioration . discoloured palatal groove
18岁男性患者， 26号牙齿的牙冠中面出现缺损，中面及远中面的汞合金修复出现边缘恶化现象。上颚沟变色。
Ru1ls : the root surface with high root caries prevalence rate are labial surfaces of incisor and canine , mandibular premolar and molar , lingual surfaces of mandibular incisor and canine and maxillary molar , distal surface of premolar and mesial surface of molar
结果：根面龋易感性高的根面为前牙、下领前磨牙、磨牙的唇（颊）面、下前牙与上领磨牙的舌面、前磨牙的远中面、磨牙的近中面。