Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2022 Dec 9;22(1):590.
doi: 10.1186/s12903-022-02571-x.

The effects of different root canal irrigation protocols and artificial aging procedures on the bond strength between dentin and hybrid ceramic posts

Celalettin Topbaş  1 , Şevki Çınar  2 , Bike Altan  2 , Dursun Ali Şirin  3 , Mehmet Ali Fildişi  4
Affiliations

The effects of different root canal irrigation protocols and artificial aging procedures on the bond strength between dentin and hybrid ceramic posts

Celalettin Topbaş et al. BMC Oral Health. .

Abstract

The purpose of this study is to investigate the effects of different root canal irrigation protocols applied to the dentin and artificial aging procedures on the micro pushout bond strength (mPBS) between dentin and hybrid ceramic posts. Seventy-five single-rooted mandibular premolar teeth were divided into 5 groups (Gr1-5). 50 of the teeth were used for the mPBS tests (n = 10), whereas 25 were used for the smear layer examinations (n = 5). Post space were prepared and irrigated with different irrigation-protocols in each group. (Gr1:[SS], Gr2:[NaOCl] + SS, Gr3:[EDTA] + NaOCl + SS, Gr4:[MA] + NaOCl + SS, Gr5:[Ch] + NaOCl + SS). Post and core pattern were fabricated with pattern resin and a fiber post, after scanning, the posts were milled with Vita Enamic resin ceramic block, and cemented. After 7 days the roots were sliced at thicknesses of 1 mm; half of them were subjected to mPBS test, while the other half were tested after undergoing mechanical cycling for artificial aging. For data analysis, the Shapiro-Wilk test was utilized to test normal distributions, 3-way analysis of variance was used to compare mPBS, and Tukey's HSD test was conducted for multiple comparisons. SEM analysis was performed for examination of failure modes and smear layer removal. Different root canal irrigation protocols affected mPBS significantly. While Gr4 had the highest mPBS, Gr1 had the lowest. Regarding to different zones, the highest mPBS was in coronal zone, and the lowest one was in the apical zone. The aging procedure also led to a statistically-significant decrease in mPBS. Most frequent failure modes were cohesive failure in dentin and mixed failure. Irrigation with 7%MA (Gr4) showed better performance than 17% EDTA (Gr3) in smear layer removal, especially at the apical zone of the tooth. This is critical for the success of root canal treatment and increased the mPBS to a higher extent in all zones of the tooth.

Keywords: EDTA; Maleic acid; Micro-pushout bond strength; Post; Vita Enamic.

PubMed Disclaimer

Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
SEM images. Most frequent modes of failure (Type 3 and Type 5). Type 3 Adhesive in cement or dentin (A and a). Type 5 Mixed (B and b). 30x (A and B) and 100x (a and b). The lengths are given under the image as 1 mm (A and B) and 100µm (a and b)
Fig. 2
Fig. 2
Distribution of modes of failure based on groups. Type 1: Cohesive in dentin. Type 2: Cohesive in post or cement. Type 3: Adhesive in cement or dentin. Type 4: Adhesive in cement or post. Type 5: Mixed
Fig. 3
Fig. 3
SEM images in groups and zones
See this image and copyright information in PMC

References

    1. Eğilmez F, Ergun G, Cekic-Nagas I, Vallittu PK, Lassila LV. Light Transmission of Novel CAD/CAM Materials and Their Influence on the Degree of Conversion of a Dualcuring Resin Cement. J Adhes Dent. 2017;19:39–48. - PubMed
    1. ELNAGHY AN Effect of qmix irrigant on bond strength of typ fibre posts to root dentine. Int Endod J. 2014;47:280–9. doi: 10.1111/iej.12145. - DOI - PubMed
    1. Figueiredo FE, Martins-Filho PR, Faria-E-Silva AL. Do metal post-retained restorations result in more root fractures than fiber post-retained restorations? A systematic review and meta-analysis. J Endod. 2015;41(3):309–16. doi: 10.1016/j.joen.2014.10.006. - DOI - PubMed
    1. Awad MA, Marghalani TY. Fabrication of custom made ceramic post and using CAD-CAM technology. J Prosthet Dent. 2007;98:161–2. doi: 10.1016/S0022-3913(07)60050-X. - DOI - PubMed
    1. Piangsuk T, Dawson DV, El-Kerdani T, Lindquist TJ. The Accuracy of Post and Core Fabricated with Digital Technology. J Prosthodont. 2022. 10.1111/jopr.13522. Epub ahead of print. - PubMed

LinkOut - more resources