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

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

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...

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Published in:Polymers Vol. 14; no. 4; p. 758
Main Authors: AlAali, Khulud A, AlHelal, Abdulaziz, Almahri, Jawaher R, Albakri, Aroob A, Albani, Ragad M, Alhaizan, Yasmeen A, Alhamdan, Mai M, Alaql, Naif A, Binhasan, Mashael, Alhamdan, Eman M, Albaqawi, Ahmed H, Vohra, Fahim, Abduljabbar, Tariq
Format: Journal Article
Language:English
Published: Switzerland MDPI AG 15-02-2022
MDPI
Subjects:
Adhesive bonding
Adhesive strength
Bond strength
Bonding strength
Cement
Customization
Dental cement
Dentin
Dentistry
Distilled water
Endodontics
Ionomers
Laboratories
Polymerization
Polymers
Resins
Retention
Teeth
Tensile stress
Thermal cycling
Water baths
Zinc
Zinc phosphate
Zirconium dioxide
United States > US
Switzerland
Germany
zinc phosphate
bond strength
glass ionomer
adhesion
resin polymer
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Summary: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 ( < 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.
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ISSN:2073-4360
2073-4360
DOI:10.3390/polym14040758