Root Fortification

Abstract

An incompletely formed tooth is left with thin dentin walls and experiences a higher incidence of cervical root fracture that reduces the long-term overall prognosis of the tooth. Faced with these situations, clinicians have attempted to use various restorative methods to reinforce the remaining root. Various techniques have been reported, and the scientific evidence for each has been reviewed. The biomechanical considerations of reinforcing a weakened root are also reviewed, and the most current information about failure analysis, fracture characteristics of natural dentin, and in vitro test configurations used have been considered. In light of these additional considerations, some recommendations for future understanding of this complex problem have been proposed.

Influence of glass fibre post length and remaining dentine thickness on the fracture resistance of root filled teeth

“…There are several methods for the restoration of weakened roots, such as the use of accessory fibre posts, a thick layer of luting cement and the association of composite resin with glass fibre posts to obtain customized well-fitting posts (Zogheib et al 2011, Alsamadani et al 2012, Amin et al 2014, Wandscher et al 2014. The reinforcement of roots may be promoted by the use of composite resin associated with glass fibre posts to form a mono-block inside the weakened root, which could potentially increase its resistance to fracture (Schwartz 2006, Silva et al 2011, Zogheib et al 2011, Seghi et al 2013.…”

Comparison of Fracture Sites and Post Lengths in Longitudinal Root Fractures

“…There have recently been numerous reports of fiber posts in relation to root fracture, but in vitro findings are inconclusive, for example, one study observed that fiber posts increase fracture resistance (19) and another reported deterioration resulting from fiber posts (20). Further clinical studies on the effects of fiber posts on fracture resistance are required (21,22).…”

Incomplete rhizogenesis and necrosis treated with PBS® HP cement synthetic barrier: case report

“…1 In addition to necrosis, these teeth present thin walls with greater susceptibility to fracture and the broad lumen of the apical foramen makes it difficult to maintain the obturator material within the root canal, which compromises the long-term success of the treatment. 2,3 Dental maturity is assessed by the dental specialty (endodontics) through several classification systems for the degree of root formation and maturation. 4 The Cvek classification describes the five stages of root development: I=<1/2 root length, II=1/2 root length, III=root length 2/3, IV=open apical foramen and near full length of the root and V=closed apical foramen and complete root development.…”