HomeDentistry The peripheries of the custom tray should be under extended to all border and clearance from the frenum areas.. 2mm publisher :NIL NAM -June 08, 2023 The peripheries of the custom tray should be under extended to all border and clearance from the frenum areas:2mm.***4mm.6mm.8mm. Labels Dentistry Facebook Twitter Share:The peripheries of the custom tray should be under extended to all border and clearance from the frenum areas.. 2mm Facebook Twitter WhatsApp Pinterest LinkedIn Reddit Tumblr Telegram Email