Effect of Nd:YAG laser irradiation on microtensile bond strength of universal adhesives to dentin. (14th April 2021)

• Record Type: Journal Article
• Authors: Jafarnia, Shiva; Zeinaddini Meymand, Javad; Zandkarimi, Fateme; Saberi, Sogol; Valanezhad, Alireza; Shahabi, Sima
• Is Part Of: Laser physics. Volume 31:Number 5(2021)
• Publication Date: 2021-04-14
• Subjects: laser treatment -- Nd:YAG laser -- bond strength -- restoration -- adhesive; Lasers -- Periodicals; 621.36605
• DOI: 10.1088/1555-6611/abefe9
• Languages: English
• ISSNs: 1054-660X

Abstract

Abstract: The aim of this study was to evaluate the effect of neodymium:yttrium–aluminum–garnet (Nd:YAG) laser irradiation before adhesive application on microtensile bond strength of resin composite to dentin surface. Materials and methods: in this experiment, 40 human extracted third molar teeth were chosen and the occlusal surface was cut to achieve a flat dentin surface. Groups were divided based on the adhesives (G-Premio Bond or Clearfil S3 Bond) and the presence or absence of Nd:YAG laser application. All the samples were restored with resin composite and subjected to a universal testing machine for a microtensile bond strength test. Fracture mode for each failure was analyzed under the stereomicroscope. According to the results, there was a significant difference between the two adhesives with Nd:YAG laser irradiation. The application of laser enhanced the microtensile bond strength in both adhesives. In all groups, regardless of laser application, adhesive failure was dominant between fracture patterns. It was concluded that Nd:YAG laser irradiation on dentin surface prior to adhesive application has a positive effect and significantly increases the microtensile bond strength of restoration to the tooth.