Influence of Conventional Polymer, Hybrid Polymer and Zinc Phosphate Luting Agents on the Bond Strength of Customized Zirconia Post in Premolars—An In-Vitro Evaluation

Polymers

Khulud A. AlAali¹  Ahmed H. Albaqawi²  Mashael Binhasan³  Aroob A. Albakri⁴  Mai M. Alhamdan⁵  Abdulaziz AlHelal⁵  Fahim Vohra⁵  Eman M. Alhamdan⁵  Tariq Abduljabbar⁵  Naif A. Alaql⁶  Ragad M. Albani⁷  Jawaher R. Almahri⁸  Yasmeen A. Alhaizan⁹ 

[1] Department of Clinical Dental Sciences, College of Dentistry, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia;Department of Restorative Dental Science, College of Dentistry, University of Ha’il, Ha’il 55476, Saudi Arabia;Department of Restorative Dentistry, Division of Operative Dentistry, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia;General Dentist, College of Dentistry, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia;Prosthetic Dental Science Department, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia;Prosthodontic Department, Riyadh Specialized Dental Center, Ministry of Health, Riyadh 13226, Saudi Arabia;Prosthodontics Postgraduate Resident, College of Dentistry, King Saud University, Riyadh 11671, Saudi Arabia;Prosthodontics Postgraduate Resident, College of Dentistry, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia;Restorative Postgraduate Resident, King Faisal Specialist Hospital, Riyadh 11211, Saudi Arabia;

关键词: adhesion;    bond strength;    resin polymer;    glass ionomer;    zinc phosphate;   

DOI  :  10.3390/polym14040758

来源: DOAJ

【 摘 要 】

The aim was to identify the influence of conventional polymeric resin based cement (RC), hybrid polymer modified glass ionomer (RMGIC) and Zinc phosphate cement (ZPC) on the pull out strength of the customized zirconia post in premolars. Access cavity and root canals were performed in sixty premolar teeth with the standardized crown down technique (ProTaper Universal, Dentsply). Post space impressions were scanned, and the pre-sintered Zenostar Zr Translucent blanks (Weiland Dental, Pforzheim) were milled with the Opera-system to form the post. All prepared specimens were divided equally in three groups based on the cement type employed for luting as follows: group A: ZPC; group B (GC Fuji PLUS Capsule): RMGIC; group C (and RC (3M RelyX ARC). Ten specimens in each group were thermocycled (TC) at 5 and 55 °C in distilled water baths (40,000 cycles). Pull out bond strength was assessed using a universal testing machine at 0.5 mm/min. The means and standard deviations were compared using ANOVA and Tukey Kramer multiple comparisons tests. A significant difference among the cement groups as well as between TC and non-thermocycled (NTC) groups (p < 0.05) was observed. The highest tensile stress was demonstrated among group C (Resin, 69.89 ± 4.81 (NTC), 64.06 ± 4.36 (TC)) with the least in group A, (zinc phosphate, 43.66 ± 5.02 (NTC), 37.70 ± 5.10 (TC)) for both groups. Group A presented with 100% adhesive bond failures, followed by 80% in group C and 70% in group B, respectively. A similar outcome was observed in the TC group for the cement; however, unlike the NTC group, the TC group showed more cohesive failures compared to the NTC mixed failure. Dual cure polymer based cement demonstrated higher bond strength and efficient adhesive bonding of the customized Zr post with root dentine compared to zinc phosphate (non-polymeric) and RMGIC (hybrid polymer). Thermocycling compromised Zr post adhesive bonding to root dentin.

【 授权许可】

Unknown