Home | About us | Editorial board | Search | Ahead of print | Current issue | Archives | Submit article | Instructions| Reviewers

  Home Print this page Email this page Small font sizeDefault font sizeIncrease font size Users Online: 2868    
Year :   |  Volume :   |  Issue :   |  Page :

Comparative evaluation of microtensile bond strength in three different dentin luting agents: An in vitro study

1 Universidad Privada San Juan Bautista, School of Stomatology, Lima, Peru
2 Universidad Nacional Federico Villarreal, Postgraduate School, “Grupo de Investigación Salud y Bienestar Global”, Lima, Peru
3 Universidad Científica del Sur, School of Stomatology, Lima, Peru
4 Universidad Inca Garcilaso de la Vega, Faculty of Stomatology, Lima, Peru

Correspondence Address:
César Félix Cayo-Rojas,
Universidad Privada San Juan Bautista, School of Stomatology, Av. Jose Antonio Lavalle s/n; Chorrillos. Lima
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jispcd.JISPCD_299_21

Aim: Long-term clinical success on indirect restorations is largely determined by bonding efficiency of the luting agent, with adhesion to dentin being the main challenge. Therefore, aim of this study was to assess the microtensile bond strength when using flowable resin composite, preheated resin composite and dual self-adhesive resin cement as dentin luting agents. Materials and Methods: Occlusal thirds of molar teeth were cut and randomly divided into 3 groups to be cemented: RelyX™U200, Filtek™ Z250 XT- preheated to 70° and Filtek Flow™ Z350XT. They were then thermocycled 5000 times between 5+/-2°C and 55+/-2°C. Subsequently, 10 microbars per group were prepared. The 30 samples were placed in saline solution for 24 hours at room temperature prior to microtensile test. This was performed with a digital universal testing machine at a crosshead speed of 0.5 mm/min. The bond strength values obtained were analyzed in Megapascals (MPa). Measures of central tendency such mean and measures of dispersion such standard deviation were used. In addition, the Kruskall Wallis non-parametric test with Bonferroni post hoc test was applied, considering a significance value of 5% (P < 0.05), with type I error. Results: The dentin microtensile bond strengths of preheated resin composite, flowable resin composite and dual self-adhesive cement were 6.08 ± 0.66 Mpa, 5.25 ± 2.60Mpa and 2.82 ± 1.26Mpa, respectively. In addition, the preheated resin composite exhibited significantly higher microtensile bond strength compared to the dual self-adhesive cement (P < 0.001). While the flowable resin composite showed no significant difference with the dual self-adhesive cement (P = 0.054) and the preheated resin composite (P = 0.329). Conclusion: The microtensile bond strength in dentin was significantly higher when using a preheated resin composite at 70°C as a luting agent compared to dual self-adhesive cement. However, the preheated resin composite showed similar microtensile bond strength compared to the flowable resin composite.

 Table of Contents

  Search Pubmed for
    -  Castro-Ramirez LC
    -  Ladera-Castañeda MI
    -  Cachay-Criado HR
    -  Alvino-Vales MI
    -  López-Gurreonero C
    -  Cervantes-Ganoza LA
    -  Cayo-Rojas CF
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded4    

Recommend this journal