Influence of resin cements on cuspal deflection and fracture load of endodontically-Treated teeth restored with composite inlays

Rhuy Jacob Cezarotto Dall Agnol, Paula Cristine Ghiggi, Maria Paula Gandolfi Paranhos, Gilberto Antonio Borges, Luiz Henrique Burnett Júnior, Ana Maria Spohr

Research output: Contribution to journalArticle

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Abstract

Objectives. To evaluate the influence of resin cements on cuspal deflection, fracture load and failure mode of endodontically-Treated teeth restored with composite resin inlays. Materials and methods. Forty maxillary premolars were randomly divided into four groups: G1 (sound teeth, control), G2 (RelyX ARC), G3 (RelyX Unicem) and G4 (Maxcem Elite). The teeth from groups 2, 3 and 4 received mesial-occlusal-distal preparations and endodontic treatments. Impressions were taken with vinyl polysiloxane and poured using type IV die stone. Inlays with Z250 composite resin were built over each cast and luted with the resin cements. A 200-N load was applied on the occlusal surface and the cuspal deflection was measured using a micrometer. The specimens were then subjected to an axial load until failure occurred. The resulting failure mode was analyzed. Results. The means for cuspal deflection (μm) and fracture load (N) followed by the same letter represent no statistically significant difference based on ANOVA and Tukey's test (p < 0.05). Cuspal deflection: G1 = 4.7 (±1.7)a, G2 = 12.0 (±8.9)a, G3 = 39.0 (±27.0)b and G4 = 56.8 (±18.2)b. Fracture load: G1 = 1982 (±893)a, G2 = 690.9 (±225.5) b, G3 = 679 (±193.6)b and G4 = 465.5 (±121.6)b. G1 presented cusp fractures only at the cement-enamel junction (CEJ). There was a high frequency of cusp fractures below the CEJ in G2, G3 and G4. Conclusions. Composite resin inlays luted with resin cements do not recover the strength of sound teeth. However, teeth restored with composite resin inlays and luted with RelyX ARC can withstand mechanical fatigue longer before failure occurs than those luted with RelyX Unicem and Maxcem Elite.

Original languageEnglish (US)
Pages (from-to)664-670
Number of pages7
JournalActa Odontologica Scandinavica
Volume71
Issue number3-4
DOIs
StatePublished - May 1 2013

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Resin Cements
Nonvital Tooth
Inlays
Composite Resins
Tooth
Dental Enamel
Endodontics
Bicuspid
Fatigue
Analysis of Variance
Rely X Unicem
RelyX ARC
Maxcem

Keywords

  • Deflection
  • Resin cements
  • Strength

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Dall Agnol, R. J. C., Ghiggi, P. C., Paranhos, M. P. G., Borges, G. A., Burnett Júnior, L. H., & Spohr, A. M. (2013). Influence of resin cements on cuspal deflection and fracture load of endodontically-Treated teeth restored with composite inlays. Acta Odontologica Scandinavica, 71(3-4), 664-670. https://doi.org/10.3109/00016357.2012.715187

Influence of resin cements on cuspal deflection and fracture load of endodontically-Treated teeth restored with composite inlays. / Dall Agnol, Rhuy Jacob Cezarotto; Ghiggi, Paula Cristine; Paranhos, Maria Paula Gandolfi; Borges, Gilberto Antonio; Burnett Júnior, Luiz Henrique; Spohr, Ana Maria.

In: Acta Odontologica Scandinavica, Vol. 71, No. 3-4, 01.05.2013, p. 664-670.

Research output: Contribution to journalArticle

Dall Agnol, Rhuy Jacob Cezarotto ; Ghiggi, Paula Cristine ; Paranhos, Maria Paula Gandolfi ; Borges, Gilberto Antonio ; Burnett Júnior, Luiz Henrique ; Spohr, Ana Maria. / Influence of resin cements on cuspal deflection and fracture load of endodontically-Treated teeth restored with composite inlays. In: Acta Odontologica Scandinavica. 2013 ; Vol. 71, No. 3-4. pp. 664-670.
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abstract = "Objectives. To evaluate the influence of resin cements on cuspal deflection, fracture load and failure mode of endodontically-Treated teeth restored with composite resin inlays. Materials and methods. Forty maxillary premolars were randomly divided into four groups: G1 (sound teeth, control), G2 (RelyX ARC), G3 (RelyX Unicem) and G4 (Maxcem Elite). The teeth from groups 2, 3 and 4 received mesial-occlusal-distal preparations and endodontic treatments. Impressions were taken with vinyl polysiloxane and poured using type IV die stone. Inlays with Z250 composite resin were built over each cast and luted with the resin cements. A 200-N load was applied on the occlusal surface and the cuspal deflection was measured using a micrometer. The specimens were then subjected to an axial load until failure occurred. The resulting failure mode was analyzed. Results. The means for cuspal deflection (μm) and fracture load (N) followed by the same letter represent no statistically significant difference based on ANOVA and Tukey's test (p < 0.05). Cuspal deflection: G1 = 4.7 (±1.7)a, G2 = 12.0 (±8.9)a, G3 = 39.0 (±27.0)b and G4 = 56.8 (±18.2)b. Fracture load: G1 = 1982 (±893)a, G2 = 690.9 (±225.5) b, G3 = 679 (±193.6)b and G4 = 465.5 (±121.6)b. G1 presented cusp fractures only at the cement-enamel junction (CEJ). There was a high frequency of cusp fractures below the CEJ in G2, G3 and G4. Conclusions. Composite resin inlays luted with resin cements do not recover the strength of sound teeth. However, teeth restored with composite resin inlays and luted with RelyX ARC can withstand mechanical fatigue longer before failure occurs than those luted with RelyX Unicem and Maxcem Elite.",
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AU - Dall Agnol, Rhuy Jacob Cezarotto

AU - Ghiggi, Paula Cristine

AU - Paranhos, Maria Paula Gandolfi

AU - Borges, Gilberto Antonio

AU - Burnett Júnior, Luiz Henrique

AU - Spohr, Ana Maria

PY - 2013/5/1

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N2 - Objectives. To evaluate the influence of resin cements on cuspal deflection, fracture load and failure mode of endodontically-Treated teeth restored with composite resin inlays. Materials and methods. Forty maxillary premolars were randomly divided into four groups: G1 (sound teeth, control), G2 (RelyX ARC), G3 (RelyX Unicem) and G4 (Maxcem Elite). The teeth from groups 2, 3 and 4 received mesial-occlusal-distal preparations and endodontic treatments. Impressions were taken with vinyl polysiloxane and poured using type IV die stone. Inlays with Z250 composite resin were built over each cast and luted with the resin cements. A 200-N load was applied on the occlusal surface and the cuspal deflection was measured using a micrometer. The specimens were then subjected to an axial load until failure occurred. The resulting failure mode was analyzed. Results. The means for cuspal deflection (μm) and fracture load (N) followed by the same letter represent no statistically significant difference based on ANOVA and Tukey's test (p < 0.05). Cuspal deflection: G1 = 4.7 (±1.7)a, G2 = 12.0 (±8.9)a, G3 = 39.0 (±27.0)b and G4 = 56.8 (±18.2)b. Fracture load: G1 = 1982 (±893)a, G2 = 690.9 (±225.5) b, G3 = 679 (±193.6)b and G4 = 465.5 (±121.6)b. G1 presented cusp fractures only at the cement-enamel junction (CEJ). There was a high frequency of cusp fractures below the CEJ in G2, G3 and G4. Conclusions. Composite resin inlays luted with resin cements do not recover the strength of sound teeth. However, teeth restored with composite resin inlays and luted with RelyX ARC can withstand mechanical fatigue longer before failure occurs than those luted with RelyX Unicem and Maxcem Elite.

AB - Objectives. To evaluate the influence of resin cements on cuspal deflection, fracture load and failure mode of endodontically-Treated teeth restored with composite resin inlays. Materials and methods. Forty maxillary premolars were randomly divided into four groups: G1 (sound teeth, control), G2 (RelyX ARC), G3 (RelyX Unicem) and G4 (Maxcem Elite). The teeth from groups 2, 3 and 4 received mesial-occlusal-distal preparations and endodontic treatments. Impressions were taken with vinyl polysiloxane and poured using type IV die stone. Inlays with Z250 composite resin were built over each cast and luted with the resin cements. A 200-N load was applied on the occlusal surface and the cuspal deflection was measured using a micrometer. The specimens were then subjected to an axial load until failure occurred. The resulting failure mode was analyzed. Results. The means for cuspal deflection (μm) and fracture load (N) followed by the same letter represent no statistically significant difference based on ANOVA and Tukey's test (p < 0.05). Cuspal deflection: G1 = 4.7 (±1.7)a, G2 = 12.0 (±8.9)a, G3 = 39.0 (±27.0)b and G4 = 56.8 (±18.2)b. Fracture load: G1 = 1982 (±893)a, G2 = 690.9 (±225.5) b, G3 = 679 (±193.6)b and G4 = 465.5 (±121.6)b. G1 presented cusp fractures only at the cement-enamel junction (CEJ). There was a high frequency of cusp fractures below the CEJ in G2, G3 and G4. Conclusions. Composite resin inlays luted with resin cements do not recover the strength of sound teeth. However, teeth restored with composite resin inlays and luted with RelyX ARC can withstand mechanical fatigue longer before failure occurs than those luted with RelyX Unicem and Maxcem Elite.

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