<prompt> At distal end of mandibular arch pear shaped structure which is composed of typical gingival tissue known as?Retromolar padRetromolar papillaPterygomandibular rapheMasseteric notch  <response>: Retromoplar papilla:It is an scarremnants of gingival tissue of last mandibular molar extractionRetromolar Pad:Triangular pad of soft tissue at distal end of lower ridge. 