Haemostatic agents on the shear bond strength of self-adhesive resin

Abstract

Background Dentin surface contaminated with haemostatic agents can interfere with the bonding of self-adhesive resin cement. Therefore the purpose of this study was to evaluate the effect of various haemostatic agents such as Aluminium chloride, Ferric sulphate and Tannic acid on the shear bond strength of self-adhesive resin luting agent. Material and Methods The buccal surfaces of extracted premolars were flattened to expose the dentine. The teeth were then randomly divided into four groups. In Group I Aluminium Chloride was applied on the flattened dentinal surface, in Group II Ferric Sulphate was applied to exposed dentin surface, in Group III tannic acid was applied on to the dentinal surface, and the control group, i.e. Group IV was rinsed with saline. After the surface treatment, all the teeth were air dried. Then a predetermined dimension of RelyX™ U200 self-adhesive resin cement was bonded to the pretreated dentin surfaces. The samples were then stored under 370C in distilled water for 24 hours under 100 % humidity. Following this each sample was tested for shear bond strength with an Instron testing machine at a crosshead speed of 1mm/min. Results There was significant difference in the shear bond strength of control and tannic acid contaminated group (p<0.05), whereas there was no significant differences between the shear bond strength between control and aluminium chloride and ferric sulphate groups (p>0.05). Conclusions The usage of haemostatic agent can negatively affect the bond strength of self-adhesive resin cement (Rely X) on to the dentin surface. As per the study Tannic acid significantly weakened the bond between the self-adhesive resin and dentin. Key words:Aluminium chloride, Ferric sulphate, haemostatic agent, self-adhesive resin cement, shear bond strength, Tannic acid.

Effect of contamination and decontamination methods on the bond strength of adhesive systems to dentin: A systematic review

“…However, some of these agents may lessen the bond strength of dental adhesives. 48 Mostly, these agents were applied around the gingiva T A B L E 3 (Continued) as bleeding occurs around the gingival margin. 49 Previous reports have shown that aluminum chloride and ferric sulfate dentin contamination can significantly lowered the bond strength of SE adhesive when compared to normal dentin.…”

“…Hemostatic agents like aluminum chloride, ferric sulfate, and tannic acid can be used to control the bleeding. However, some of these agents may lessen the bond strength of dental adhesives 48 . Mostly, these agents were applied around the gingiva as bleeding occurs around the gingival margin 49 .…”

Comparative evaluation of the effect of decontamination protocol on the shear bond strength of eighth generation bonding agent to contaminated dentin: an in vitro study

“…The calcium ions present in the hydroxyapatite crystals of enamel and dentin are replaced by aluminium ions present in the hemostatic agent which inhibits the effective demineralization of these tissues. Decrease in bond strength may be attributed to deposition of aluminium in the form of unbound minerals on the dentin surface forming a residual layer leading to decreased adhesive infiltration into dentin thereby impeding the bonding procedures [8].…”

Clinical applications of ferric sulfate in dentistry: A narrative review

“…However, rinsing alone cannot eliminate surfaces contamination and thus the remnant FS interfered with diffusion of adhesive in dentinal tubules. [ 31 32 ] Because of the weak acidity of the primer in self-etch adhesives, they could not dissolve the contamination by ViscoStat ® ;[ 33 ] hence, it is impossible to penetrate deeper into dentin. [ 32 ] The suggested mechanism was that hemostatic agent causes derangement in bonding procedure because of dentinal tubules obturation and dentinal surface was demineralized in different values.…”