Effect of Bioinductive Cavity Liners on Shear Bond Strength of Dental Composite to Dentin

Abstract

Background. The aim of the current study was to evaluate and compare the influence of Dycal, Lime-Lite, TheraCal LC, Biodentine, resin-modified glass ionomer cement (RMGIC), and Activa BioActive as the pulp capping material on the shear bond strength of resin composite to dentin. Methods. A total of 70 extracted caries-free molars were randomly assigned to seven groups. Six test groups were covered with various protective liners: Dycal, TheraCal LC, Lime-Lite, Activa BioActive, Biodentine, and RMGIC. The control group received no liner pretreatment. Each sample was bonded to resin composite using the total-etch Tetric N bond adhesive. The samples were then tested for shear bond strength using the universal testing machine at a cross-head speed of 1 mm/min until bond failure occurred. The data were analyzed using the one-way ANOVA test followed by the Tamhane post hoc test for pairwise comparisons of the groups. Results. Independent of the type of the applied liner, all groups exhibited inferior SBS to dentin compared to the control group. TheraCal and RMGIC showed significantly higher shear bond strength than Biodentine and Dycal, which showed the lowest shear bond strength. Lime-Lite and Activa also had significantly lower SBS results than TheraCal. The mode of fracture was predominantly cohesive in Dycal, Biodentine, and TheraCal and adhesive in Activa. Conclusion. This present study concludes that the bond strength of resin composite to dentin can be affected differently using various types of liners.

Biomateryallerin Üniversal Adeziv sistemlere Bağlanma Dayanımının Karşılaştırılması: İn Vitro Çalışma

“…Tohidkhah ve ark. 34 biodentin'in ilk sertleşme (12 dakika) sonrası 15 sn %37 fosforik asit ve Tetric N Bond uyguladıkları çalışmalarında; Biodentin'in daha düşük bağlanma gücü sergilediğinibelirtmişlerdir. Asit uygulamasının su bazlı Biodentin'in çözünürlüğünü olumsuz etkilediği ve kompozite düşük bağlanma dayanımına yol açtığı düşünülmektedir.…”

“…Asit uygulamasının su bazlı Biodentin'in çözünürlüğünü olumsuz etkilediği ve kompozite düşük bağlanma dayanımına yol açtığı düşünülmektedir. 34 Araştırmamızda TheraCal PT grubu üç farklı ÜA sistemde yüksek bağlanma değeri sergiledi. En yüksek bağlanma dayanımı gösteren Gluma Bond Universal'ı (23,9386 MPa) sırayla Single Bond Universal (19,5386 MPa) ve G-Premio Bond takip etti.…”

Effect of different cavity liners on nanocomposite resin shear bond strength to dentine

“…By sealing dentinal tubules, these materials protect the pulp from irritants, microorganisms, and thermo-mechanical stimuli. [ 1 ] Traditionally, calcium hydroxide was used as a pulp-capping agent since it is antimicrobial, has an alkaline pH, and stimulates mineralization. Nevertheless, calcium hydroxide's work as a pulp-capping agent has decreased as a result of the tunnel defects and micro-leakage that have been recorded.…”

“…Nevertheless, calcium hydroxide's work as a pulp-capping agent has decreased as a result of the tunnel defects and micro-leakage that have been recorded. Several materials have been used as cavity liners; these materials include Theracal LC, Apacal LC, Biodentine, MTA, RMGIC, and giomer, as well as direct and indirect pulp capping [ 1 , 2 ]. Biodentine (Septodont, France) was introduced in 2011.…”

Efficacy of Calcium Hydroxide/Saline versus Calcium Hydroxide/Artemisia persica Essential Oil as Intracanal Medicament to Improve Radiographic Visualization of Periapical Lesions in Necrotic Teeth: A Randomized Clinical Trial

“…The mechanism of antimicrobial action of CH is not clearly understood. However, one possible mechanism is through the release of hydroxyl ions that raise the pH [ 16 ]. Most pathogenic bacteria cannot tolerate alkaline conditions [ 17 ].…”