First published: 12 June 2019
Aim
The aim of the present study was to investigate survival
rates from fracture of endodontically treated posterior teeth (ETT)
restored with or without crowns with recall periods of up to 5 years.
Methods
ETT with single‐unit crown or resin composite
restorations were studied based on the inclusion criteria. Restoration,
tooth structure loss, adjacent teeth, fracture, and restorability were
recorded. Survival rates from fracture were calculated, and risk factors
were identified.
Results
Overall, survival rate of ETT with crowns (92.2%) was significantly higher than resin composites (77.4%) (P < 0.05).
ETT with one or two surface loss/es and two adjacent teeth had a high
survival rate of 86.9%, which was not significantly different to ETT
with crowns (P ≥ 0.05). Restoration and adjacent teeth were
identified as significant factors. The majority of fractured ETT with
resin composites were restorable, whereas those with crowns were
unrestorable. Survival rates from unrestorable fracture were not
significantly different between the crown (93.1%) and resin composite
(96%) (P ≥ 0.05).
Conclusions
The survival rate from the fracture of ETT restored with
crowns was significantly higher than ETT restored with resin composites,
but was not significantly different to ETT with one or two ETT with one
or two surface loss/es and two adjacent teeth. ETT restored with resin
composites had mostly restorable fracture, whereas ETT with unrestorable
fracture were similar between the two restorations.
Comments