RSUSSH 2020

IN20-137 A comparative study of microshear bond strength of hybrid CAD/CAM ceramic with universal bonding systems

Presenter: Seelassaya Leelaponglit
Chulalongkorn University, Bangkok, Thailand

Abstract

      The aim of this in vitro study was to evaluate the effect on microshear bond strength of various types of universal adhesive with dual cure resin cement and different types of hybrid ceramic bonded to dentin. Flat buccal surface of 99 extracted human premolars were randomly allocated into 9 groups. Three hybrid ceramics, Shofu block HC® (SHOFU, Japan), Vita Enamic® (VITA, Germany) and Cerasmart® (GC, USA), were prepared into an approximate size of 1 x 1 x 3 mm3 slab and bonded to dentin using Scotchbond Universal® (3M ESPE, USA) with RelyX™Ultimate® (3M ESPE, USA), Optibond XTR® (Kerr, USA) with Nexus3® (Kerr, USA) and Optibond FL® (Kerr, USA) with Nexus3® (Kerr, USA). After 10,000 cycles of thermocycling, all specimens were tested for microshear bond strength. Data were analyzed using a one-way ANOVA and Tukey’s test (α = 0.05). The microshear bond strength in etch and rinse groups, Optibond FL® with Nexus3® and Scotchbond Universal® with RelyX™Ultimate®, was greater than the self-etch system, Optibond XTR® with Nexus3® in all hybrid ceramic tested. Within the limit of the study, there was significant difference between the microshear bond strength when using various types of universal adhesive and resin cement systems with different types of hybrid ceramic. Vita Enamic® was recommended to cement with Optibond FL® and Nexus3®, whereas, Scotchbond Universal® and RelyXTMUltimate® were suggested for Shofu block HC® and Cerasmart®.

Keywords: CAD-CAM resin ceramic; Hybrid ceramic; Microshear bond strength; Resin composite block; Resin matrix ceramic block; Universal bonding adhesive

Citation format:

Leelaponglit, S., Kraivixien, R., & Srisawasdi, S.. (2020). A comparative study of microshear bond strength of hybrid CAD/CAM ceramic with universal bonding systems. Proceeding in RSU International Research Conference, May 1, 2020. Pathum Thani, Thailand.

QUESTIONS & ANSWERS

Assist.Prof.Dr.Tool. Sriamporn (Visitor)

Thank you for the interesting research, I have some questions for your study.


According to the result of this study, using Scotch bond universal along with RelyX ultimate yielded high microshear bond strength value in most of the hybrid ceramic groups. 

What do you think would happen to the bond strength value if we are to use Scotch bond universal adhesive along with Nexus3 instead of RelyX ultimate? Will it increases or decreases the bond strength value?

And what are the advantages or disadvantages of using the resin cement and the adhesive system from the different manufecturer?

 

Thank you very much

Wuttisak Youjomnong (Chairperson)

LIVE PRESENTATION ON MAY 1, 2020