Direct anatomical posts for weakened roots: The state of knowledge

Customizing the prefabricated fiber post: A case report

“…Such scenario favors the formation of bubbles, which consequently creates a weak area in the restoration leading to adhesive failure and post debonding. 1 Customizing the prefabricated post to anatomic post yields precise adaptation to the root canal space encircled by thin and uniform layer of resin cement or reducing the cement volume, generating ideal circumstances for post retention, as performed in the present case report.…”

“…Despite constant improvements in techniques and restorative materials, rehabilitation of endodontically treated teeth still exists as a huge challenge as these teeth present with minimal and/or fragile tooth structure, remodeled esthetics and changed physical characteristics like decreased proprioception, altered collagen crosslinking and dehydration. [1][2][3] Extensive damage of the tooth may occur because of dental caries extension or trauma, while over-preparation of the canal, immature development, internal resorption, or removal of a previously placed excessively large dowel and core leads to thin remaining canal walls, making the definitive restoration more complicated implicating in a poor prognosis for the long-term functionality of the restored tooth. 1 Using the intraradicular post is a commonly employed method to reinforce strength in an endodontically treated tooth when its remaining coronal portion can no longer provide sufficient/satisfactory support and retention for the restoration.…”

“…[1][2][3] Extensive damage of the tooth may occur because of dental caries extension or trauma, while over-preparation of the canal, immature development, internal resorption, or removal of a previously placed excessively large dowel and core leads to thin remaining canal walls, making the definitive restoration more complicated implicating in a poor prognosis for the long-term functionality of the restored tooth. 1 Using the intraradicular post is a commonly employed method to reinforce strength in an endodontically treated tooth when its remaining coronal portion can no longer provide sufficient/satisfactory support and retention for the restoration. 4 Since quite a while, custom-fabricated cast metal post and core were considered as the first line of treatment for the rehabilitation of endodontically treated teeth having extensive loss.…”

“…As they are procured from an impression taken directly from the canal, these conventional posts offer an acceptable fit to the canal providing improved retention along with a thin cement layer.However, these posts exhibit certain flaws such as long working time, laboratory costs, lack of true adhesion, possibility of corrosion, trouble in removing them, if needed; and discrepancy of modulus of elasticity when compared to dentin. 1 High rigidity of the cast metal post and core can generate a wedging effect, which can uneventfully lead to extensive root fractures, representing a catastrophic failure. [1][2][3][4][5] Additionally, restoration of anterior teeth with metal post and core will invalidate the entire purpose of an all-ceramic crown by compromising on the esthetics.…”

Estudo Comparativo entre Pino de Fibra de Vidro e Pino Metálico Fundido: Uma Revisão de Literatura

“…Também possuem alta adesão as resinas odontológicas e proporcionam uma estética favorável, além de serem removidos facilmente, em caso de necessidade de retratamento endodôntico, sendo resistentes à corrosão. (PRADO et al, 2014;AMARAL et al, 2015).…”