Üvegszálas fogászati kompozit tömőanyag keménysége a gyökércsatornában: nanoindentációs vizsgálat:

András Jakab; Kata Lilla Vánkay; Tamás Tarjányi; Gábor Gulyás; Krisztián Bali; Pál Patrik Dézsi; Márton Sámi; Márk Fráter

doi:10.33891/FSZ.117.2.47-52

András Jakab Szegedi Tudományegyetem, Fogorvostudományi Kar, Konzerváló és Esztétikai Fogászati Tanszék https://orcid.org/0000-0001-9865-3912
Kata Lilla Vánkay Szegedi Tudományegyetem, Fogorvostudományi Kar, Konzerváló és Esztétikai Fogászati Tanszék https://orcid.org/0009-0008-6988-8016
Tamás Tarjányi Szegedi Tudományegyetem, SZAOK Orvosi Fizikai és Orvosi Informatikai Intézet https://orcid.org/0000-0002-9481-5977
Gábor Gulyás SEMILAB Félvezető Fizikai Laboratórium Zrt. https://orcid.org/0000-0001-6200-6537
Krisztián Bali SEMILAB Félvezető Fizikai Laboratórium Zrt. https://orcid.org/0009-0003-1863-5354
Pál Patrik Dézsi SEMILAB Félvezető Fizikai Laboratórium Zrt. https://orcid.org/0009-0001-6153-508X
Márton Sámi Szegedi Tudományegyetem, TTIK Fizikai Intézet Optikai és Kvantumelektronikai Tanszék https://orcid.org/0009-0005-5798-5757
Márk Fráter Szegedi Tudományegyetem, Fogorvostudományi Kar, Konzerváló és Esztétikai Fogászati Tanszék https://orcid.org/0000-0002-0365-1613

DOI: https://doi.org/10.33891/FSZ.117.2.47-52

Keywords: polymerization, short fiber-reinforced composite, nanoindentation, hardness, Bioblock technique

Abstract

Introduction: Using short fiber-reinforced composite (SFRC) materials, individualized root posts can be fabricated to reinforce
root canal treated teeth (Bioblock technique). The question regarding this technique is the efficiency of SFRC polymerization
in different depths of the root canals. Additionally, whether the polymerization of SFRC could be improved
with light transmission methods remains a question to be answered.
Materials and methods: 20 plastic teeth (4 groups, n = 5/group) simulating root canal treatments were used for this
research, which). All teeth were restored with SFRC material, starting from 6 mm deep in the root canal till the orifice.
In group 1 and 3, the root canal was filled with SFRC material in layers, while in groups 2 and 4, it was filled in a bulkfill
manner. In group 1 and 3, the SFRC material was light cured through a fiberglass post, whereas in group 2 and 4,
a modified light source was utilized. After embedding and sectioning the samples hardness of the SFRC material at
2 mm intervals in the root canal were measured (1st, 2nd and 3rd layer, from apical to coronal direction).
Results: For the 1st layer, light curing through the fiberglass post (group 3) resulted in significantly higher hardness
compared to the modified light conductor (group 4) in the bulk-fill application method. In the 2nd layer, both group 1 and
3 showed significantly higher hardness compared to group 4.
Conclusion: Illumination through a fiberglass post provides outstanding hardness for SFRC material in bulk-fill application
in the apical and middle layers.

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Measuring the hardness via nanoindentation of a fiber-reinforced dental composite in the root canal

Pilot study

Abstract

References

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