Push‐out bond strength of various surface treatments on fiber post to root canal dentine using different irrigation techniques

Abstract

To compare the efficacy of different surface treatments (fiber post) with laser activated irrigation (LAI) technique (various root canal solutions) on root canal dentine in terms of push‐out bond strength (PBS) in a fiber post. In this study, 200 premolars were assigned into groups according to various irrigation techniques: 2.5% sodium hypochlorite (NaOCl), 17% ethylene diamine tetra acetic acid (EDTA), and 17% EDTA + LAI. In addition, the fiber posts were separated into five groups, (n = 30) according to the surface pretreatment performed: sandblasting, hydrofluoric acid (HF), Erbium, Chromium:Yttrium Scandium‐Gallium‐Garnet (Er,Cr:YSGG) laser, Neodymium‐Doped Yttrium Aluminum Garnet (Nd,YAG) laser and as untreated surface. The posts were cemented using dual‐cure resin cement and subjected to a PBS test. Data were analyzed by one way‐ANOVA, Tukey, and Tamhane T2 tests. The PBS values were increased in all parts of the tooth in the EDTA and EDTA + LAI treated groups and in groups treated with Er,Cr:YSGG laser fiber posts. In groups in which EDTA and EDTA + LAI were applied, it was observed that dentinal tubules were open according to the distribution and number of dentinal tubule configurations. The improvement of the PBS between fiber post/resin cement/root dentine was observed via the use of fiber post surface treatments with different irrigation techniques.

Efficacy of Photoinduced Photoacoustic Streaming and Diode Laser Irrigation Techniques on Smear Layer Removal, Sealer Penetration and Push-out Bond Strength

“…Such requirement was replaced by the photoacoustic shockwaves induced with the pulsed laser within the irrigant travelling throughout the root canal framework, allowing its 3-D movement without the requirement for intracanal tip insertion. 26,[32][33][34][35][36][37] PIPS is a laser agitation technique, which employs the Er: YAG laser at 2940 nm. This technology relies on the high wavelength absorption of the Er: YAG laser in the pulp chamber filled with water-based irritants.…”

“…Apical sealing was highly improved on utilizing lasers for irrigant activation before obturation. [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] Further studies should be carried out to improve the effects of lasers and its combination with different irrigating solutions in eliminating the smear layer from the root canal walls. Further research on the diode laser for the practical use in endodontics is needed before it is clinically applied.…”

Current Applications and Future Directions of Lasers in Endodontics: A Narrative Review

“…When the coronal loss is so severe that the remaining dental hard tissue cannot offer adequate support, while the teeth should be preserved for functional or aesthetic reasons, dentists will use fiber posts during endodontic treatment as intracanal retainers in order to disperse the forces transmitted to the roots, as well as to provide better retention and support [ 46 ]. Due to its superior high bonding strength and flexural strength, glass fiber posts have been applied for this purpose for over 20 years, with a 95% annual survival rate [ 47 ].…”

Efeito do extrato de limoneno na adesão de diferentes cimentos endodônticos à dentina radicular

“…A irrigação dos canais radiculares no tratamento endodôntico é uma das etapas do preparo da dentina para a remoção da camada de smear layer e na sanificação intracanal. Por esta razão, diferentes técnicas de irrigação são desenvolvidas, estudadas e observadas na literatura, efetivamente removem detritos e microorganismos dos canais radiculares e, com isso, auxiliam na adesão entre o cimento endodôntico, guta-percha e dentina radicular (KIRMALI et al, 2021;CHANDARANI et al, 2022;ROY et al, 2022).…”