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2017 ; 9
(3
): e454-e459
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Fracture resistance of endodontically treated teeth with different direct
corono-radicular restoration methods
#MMPMID28298991
Moosavi H
; Afshari S
; Manari F
J Clin Exp Dent
2017[Mar]; 9
(3
): e454-e459
PMID28298991
show ga
BACKGROUND: Endodontically treated teeth are widely considered to be more
susceptible to fracture than vital teeth. Obturation procedures and post
placement have been a main cause of vertical root fracture. MATERIAL AND METHODS:
Forty-eight human premolars with standardized weakened roots were endodontically
treated and allocated to four experimental groups (n=12). After root canal
treatment, in group 1, fiber posts #1 were cemented in root canals using Estelite
Core Quick, and the crowns were restored with resin composite. For group 2 and 3,
the roots and crowns were restored using a light-cured and self-cured adhesive
and resin composites respectively. In group 4, it was used the Panavia F 2.0
resin cement and resin composite for corono-radicular reconstruction. In group 5,
the teeth remained untouched. After 24 hours storage and 1000 thermocycles,
samples were loaded at a cross head speed of 1 mm per minute. RESULTS: A
significant difference was observed in fracture resistance among groups 4 and 5
compared to other groups. CONCLUSIONS: Root reconstruction with fiber post and
Panavia resin cement, and crown building using light-cured resin composite
resulted in increased fracture resistance equal to that of intact teeth. Key
words:Fracture resistance, fiber post, resin cement, resin composite.