Effect of intratooth location and thermomechanical cycling on microtensile bond strength of bulk-fill composite resin

doi:10.4103/JCD.JCD_30_18

. 2018 Nov-Dec;21(6):657-661.

doi: 10.4103/JCD.JCD_30_18.

Effect of intratooth location and thermomechanical cycling on microtensile bond strength of bulk-fill composite resin

Udaya Ramya Salagalla¹, Jyothi Mandava¹, Ravi Chandra Ravi¹, Vasavi Nunna¹

Affiliations

PMID: 30546214
PMCID: PMC6249940
DOI: 10.4103/JCD.JCD_30_18

Effect of intratooth location and thermomechanical cycling on microtensile bond strength of bulk-fill composite resin

Udaya Ramya Salagalla et al. J Conserv Dent. 2018 Nov-Dec.

. 2018 Nov-Dec;21(6):657-661.

doi: 10.4103/JCD.JCD_30_18.

Authors

Udaya Ramya Salagalla¹, Jyothi Mandava¹, Ravi Chandra Ravi¹, Vasavi Nunna¹

Affiliation

¹ Department of Conservative Dentistry and Endodontics, GITAM Dental College and Hospital, Visakhapatnam, Andhra Pradesh, India.

PMID: 30546214
PMCID: PMC6249940
DOI: 10.4103/JCD.JCD_30_18

Abstract

Context: The initial bond strength and potential durability of an adhesive restoration are significantly affected by regional variations in dentin composition.

Aim: The aim of this study is to evaluate the influence of dentin location and thermomechanical cyclic loading on microtensile bond strength of bulk-fill composite resin to coronal dentin.

Materials and methods: Disto-occlusal cavity preparations were done on 60 extracted human mandibular molars with pulpal floor depth of 1.5 and 3.5 mm for superficial and deep dentin and 1.5 mm axial wall depth and are restored with bulk-fill restorative composite. Bond strength evaluation was done using universal testing machine, and mode of bond failure was observed under scanning electron microscope.

Statistical analysis: Statistical analyses were done using ANOVA and Tukey's multiple post hoc test. For comparison of failure mode, Mann-Whitney U-test was used.

Results: Superficial dentin has shown higher bond strength compared to deep dentin and gingival wall dentin (P = 0.001). The bond strength values decreased with the thermomechanical cycling (P = 0.001). Deep dentin and gingival dentin have exhibited more of adhesive failures.

Conclusion: Bond strength of bulk-fill composite was negatively influenced by the depth of dentin and thermomechanical loading.

Keywords: Bond strength; bulk-fill composite; dentin depth; thermomechanical loading.

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Conflict of interest statement

There are no conflicts of interest.

Figures

**Figure 1**
Scanning electron microscope photographs of specimens showing different failure modes. (1) Cohesive failure within bulk fill composite. (2) Adhesive failure at dentin and composite interface with broken resin tags. (3) Adhesive failure at the dentin and adhesive interface. (4) Mixed failure – cohesive failure within the bulk fill composite and adhesive failure at the dentin and adhesive interface. (5) Mixed failure – cohesive failure within the composite and adhesive failure with broken resin tags. (6) Adhesive failure between the dentin and bonding agent with broken resin tags

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References

1. Opdam NJ, van de Sande FH, Bronkhorst E, Cenci MS, Bottenberg P, Pallesen U, et al. Longevity of posterior composite restorations: A systematic review and meta-analysis. J Dent Res. 2014;93:943–9. - PMC - PubMed
1. Ástvaldsdóttir Á, Dagerhamn J, van Dijken JW, Naimi-Akbar A, Sandborgh-Englund G, Tranæus S, et al. Longevity of posterior resin composite restorations in adults-A systematic review. J Dent. 2015;43:934–54. - PubMed
1. Carvalho RM, Fernandes CA, Villanueva R, Wang L, Pashley DH. Tensile strength of human dentin as a function of tubule orientation and density. J Adhes Dent. 2001;3:309–14. - PubMed
1. Cavalcanti AN, Mitsui FH, Lima AF, Mathias P, Marchi GM. Evaluation of dentin hardness and bond strength at different walls of class II preparations. J Adhes Dent. 2010;12:183–8. - PubMed
1. Perdigão J. Dentin bonding-variables related to the clinical situation and the substrate treatment. Dent Mater. 2010;26:e24–37. - PubMed

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[1] Opdam NJ, van de Sande FH, Bronkhorst E, Cenci MS, Bottenberg P, Pallesen U, et al. Longevity of posterior composite restorations: A systematic review and meta-analysis. J Dent Res. 2014;93:943–9. - PMC - PubMed

[2] Opdam NJ, van de Sande FH, Bronkhorst E, Cenci MS, Bottenberg P, Pallesen U, et al. Longevity of posterior composite restorations: A systematic review and meta-analysis. J Dent Res. 2014;93:943–9. - PMC - PubMed

[3] Ástvaldsdóttir Á, Dagerhamn J, van Dijken JW, Naimi-Akbar A, Sandborgh-Englund G, Tranæus S, et al. Longevity of posterior resin composite restorations in adults-A systematic review. J Dent. 2015;43:934–54. - PubMed

[4] Ástvaldsdóttir Á, Dagerhamn J, van Dijken JW, Naimi-Akbar A, Sandborgh-Englund G, Tranæus S, et al. Longevity of posterior resin composite restorations in adults-A systematic review. J Dent. 2015;43:934–54. - PubMed

[5] Carvalho RM, Fernandes CA, Villanueva R, Wang L, Pashley DH. Tensile strength of human dentin as a function of tubule orientation and density. J Adhes Dent. 2001;3:309–14. - PubMed

[6] Carvalho RM, Fernandes CA, Villanueva R, Wang L, Pashley DH. Tensile strength of human dentin as a function of tubule orientation and density. J Adhes Dent. 2001;3:309–14. - PubMed

[7] Cavalcanti AN, Mitsui FH, Lima AF, Mathias P, Marchi GM. Evaluation of dentin hardness and bond strength at different walls of class II preparations. J Adhes Dent. 2010;12:183–8. - PubMed

[8] Cavalcanti AN, Mitsui FH, Lima AF, Mathias P, Marchi GM. Evaluation of dentin hardness and bond strength at different walls of class II preparations. J Adhes Dent. 2010;12:183–8. - PubMed

[9] Perdigão J. Dentin bonding-variables related to the clinical situation and the substrate treatment. Dent Mater. 2010;26:e24–37. - PubMed

[10] Perdigão J. Dentin bonding-variables related to the clinical situation and the substrate treatment. Dent Mater. 2010;26:e24–37. - PubMed

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Effect of intratooth location and thermomechanical cycling on microtensile bond strength of bulk-fill composite resin

Affiliation

Effect of intratooth location and thermomechanical cycling on microtensile bond strength of bulk-fill composite resin

Authors

Affiliation

Abstract

Conflict of interest statement

Figures

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References

LinkOut - more resources

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