- Coronal seal should be attained as soon as possible. (within a month to three).
- Ferrule impact is essential for form retention and resistance.
- Crown margins should stop either on a healthy tooth or root structure, or 1 to 2 mm below the core material.
- Design that is passive and parallel is ideal.
- Using a threaded-tapered design is terrible.
- The best posts are cast ones, but the process is technique-sensitive and lab and impression-procedure-dependent.
- It is advised to use a post that corrects for anatomical coronal flare.
- In subgingival degradation, amalgam might be the greatest substitute for better composite resins.
- The key to success is the cementation of the post-post design and length.
- Zinc phosphate, flowable composite resins, or dual cure cement are all options for luting cement.
- Length, size, design, and the ferrule effect all affect how well the post performs clinically.
- Clinicians desire:- whenever coronal filling needs additional retention, one may decide to place a post.
- One may decide according to the tooth structure available after removal of the entire carious lesion
- One may decide after anticipating the amount of tooth structure that would be available after crown preparation.
- Abutments of f.P.D. & r.P.D.S,
- Mandibular Incisors
- Teeth having cervical cavities
- If the destruction of the tooth is more than 30% To 40%
SIZE OF POST
- To select the size of post – select the size of peeso that fits without resistance.
- Please check manually whether Peeso is making a full turn.
- One may practically place the selected post on the radiograph of the indicated tooth to confirm the approximate size (at least 1 mm of root dentin thickness should be available around the post)
LENGTH OF POST
- Ideal post length must be more than 2/3rd the tooth length (more than the root length)
- Measure tooth length i.e from cusp tip to root apex (W.L). Calculate 2/3rd of this length and add 2 mm
- One should avoid putting a post in the apical 4 mm of area. Post length = WL – 5mm
- The post should end at 4mm below the bony crest in a periodontally compromised case
1 x 10 i-post refills
- For the Gutta Percha removal, use peeso drill number 1.
- Use the peeso drill to determine which peeso will fit in the canal space, and the corresponding i-post is chosen.
- Up till the calculated post length in the canal, peso is taken.
- Overused Post Hole preparation should not be done using peeso drills.
- Try the article. The flare will first be loose and separate from the anatomic coronal flare.
- As soon as the flare resembles the anatomical coronal flare, cut or trim the post using the airotor. Cut the post till it is stable and sturdy. Radiograph the area to verify the length.
- If the Post is too “tight” in the canal, use an airotor to lessen the flare.
- Cement the post with any type of cement ie.g. – Zinc Phosphate or dual care cements.
- Use opaquer to mask the metal if required.
- Use any core build-up material (silver amalgam or contrast-coloured composite) and seal the coronal cavity.
- Build the normal contacts and cuspal forms.