𝗗𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁 𝗔𝗻𝗮𝘁𝗼𝗺𝗶𝗰𝗮𝗹 𝗥𝗼𝗼𝘁 ,,,

In this case upper right seven mb canal and db canal near to each other because the roots are fused together so we shouldn't extend your access more distally or mesially to avoid over reduction of tooth structure 𝐭𝐡𝐞 𝐭𝐫𝐢𝐜𝐤…