When you decide to go for post placement, don't miss these general rules

1️⃣ at least 3 - 4 mm of endodontic filling material should remain in the apical region.
2️⃣ a 1:1 ratio between the height of the crown and the root length of the post should be respected.
3️⃣ the post should be extended by at least half of the length of the root supported by bone tissue.
4️⃣ the surrounding walls of the canal (dentin) should be prepared minimally so as not to weaken the tooth.
5️⃣ there is at least 1.5 - 2.5 mm of coronal tooth structure which is known as " ferrule effect " that is very crucial for the success of a tooth restored by a root post.