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DOI :10.26650/eor.20231302012   IUP :10.26650/eor.20231302012    Full Text (PDF)

The effect of preheating on microhardness and flexural strength of bulk-fill resin composites: an in-vitro study

Mehdi Abed Kahnamouei, Mahmoud Bahari, Mohammad Esmaeel Ebrahimi Chaharom, Soodabeh Kimyai, Mehdi Daneshpooy, Katayoun Katebi, Bahareh Elhami

Purpose: The objective of this study was to assess the impact of preheating on the microhardness and flexural strength of bulk-fill resin composites.

Materials and Methods: In this in vitro study, forty-two specimens were prepared of each composite, X-tra fil and Opus Bulk Fill, resulting in 84 disk-shaped specimens for microhardness testing and 84 bar-shaped specimens for flexural strength analysis. The specimens were divided into four groups as follows: Group 1: X-tra fil composite with preheating (at 68°C for 15 minutes), group 2: X-tra fil composite without preheating (at room temperature), group 3: Opus Bulk Fill composite with the same preheating method, group 4: Opus Bulk Fill composite without preheating. Microhardness was assessed using the Vickers test with a diamond indenter, and flexural strength was measured using a 3-point flexural test. Statistical comparisons were performed on the calculated results.

Results: In the preheated groups, both X-tra fil and Opus Bulk Fill composites exhibited significantly higher mean flexural strength compared to the non-preheated groups (p<0.001). However, there was no significant difference in the mean microhardness between the two groups for either type of composite (p=0.719). Additionally, the mean flexural strength and microhardness of X-tra fil composite, in both preheated and non-preheated conditions, were higher than those of the Opus Bulk Fill composite (p<0.001).

Conclusion: Preheating bulk-fill composites to 68°C has no detrimental effect on their microhardness and increases the flexural strength of these materials. Furthermore, the degree of microhardness and flexural strength in bulk-fill composites varies between brands and is influenced by their chemical compositions.

Keywords: composite resins, heating, x-tra fil composite resin, vickers test, microhardness
DOI :10.26650/eor.20231302012   IUP :10.26650/eor.20231302012    Full Text (PDF)

Ön ısıtmanın yığın dolgulu reçine kompozitlerin mikrosertliği ve eğilme mukavemeti üzerindeki etkisi: in vitro bir çalışma

Mehdi Abed Kahnamouei, Mahmoud Bahari, Mohammad Esmaeel Ebrahimi Chaharom, Soodabeh Kimyai, Mehdi Daneshpooy, Katayoun Katebi, Bahareh Elhami

Amaç: Bu çalışmanın amacı, ön ısıtmanın yığın dolgulu reçine kompozitlerin mikrosertliği ve eğilme mukavemeti üzerindeki etkisini değerlendirmektir.

Gereç ve Yöntem: Bu in vitro çalışmada, X-tra fil ve Opus Bulk Fill kompozitlerinin her birinden kırk iki örnek hazırlandı; sonuçta mikro sertlik testi için 84 disk şeklinde örnek ve eğilme mukavemeti analizi için 84 çubuk şeklinde örnek elde edildi. Örnekler şu şekilde dört gruba ayrıldı: Grup 1: Ön ısıtmalı X-tra fil kompozit (68°C'de 15 dakika), grup 2: Ön ısıtmasız X-tra fil kompozit (oda sıcaklığında), grup 3: Opus Aynı ön ısıtma yöntemine sahip Bulk Fill kompoziti, grup 4: Ön ısıtmasız Opus Bulk Fill kompoziti. Mikro sertlik, elmas uçlu Vickers testi kullanılarak değerlendirildi ve bükülme mukavemeti, 3 noktalı bükülme testi kullanılarak ölçüldü. Hesaplanan sonuçlar üzerinde istatistiksel karşılaştırmalar yapıldı.

Bulgular: Ön ısıtmalı gruplarda hem Xtra fil hem de Opus Bulk Fill kompozitleri, ön ısıtmasız gruplarla karşılaştırıldığında önemli ölçüde daha yüksek ortalama eğilme mukavemeti sergiledi (p<0.001). Ancak her iki kompozit türü için de iki grup arasında ortalama mikrosertlik açısından anlamlı bir fark yoktu (p=0,719). Ayrıca, X-tra fil kompozitinin ortalama eğilme mukavemeti ve mikrosertliği, hem ön ısıtmalı hem de ön ısıtmasız koşullarda, Opus Bulk Fill kompozitininkinden daha yüksekti (p<0.001).

Sonuç: Bulk-fill kompozitlerin 68°C'ye kadar önceden ısıtılmasının mikrosertlikleri üzerinde zararlı bir etkisi yoktur ve bu malzemelerin eğilme mukavemetini arttırır. Ayrıca, toplu dolgulu kompozitlerdeki mikro sertlik ve bükülme mukavemetinin derecesi markalar arasında farklılık gösterir ve kimyasal bileşimlerinden etkilenir.

Keywords: kompozit reçineler, ısıtma, xtra fil kompozit reçine, vickers testi, mikrosertlik

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APA

Abed Kahnamouei, M., Bahari, M., Chaharom, M.E., Kimyai, S., Daneshpooy, M., Katebi, K., & Elhami, B. (2023). The effect of preheating on microhardness and flexural strength of bulk-fill resin composites: an in-vitro study. European Oral Research, 58(3), 133-138. https://doi.org/10.26650/eor.20231302012


AMA

Abed Kahnamouei M, Bahari M, Chaharom M E, Kimyai S, Daneshpooy M, Katebi K, Elhami B. The effect of preheating on microhardness and flexural strength of bulk-fill resin composites: an in-vitro study. European Oral Research. 2023;58(3):133-138. https://doi.org/10.26650/eor.20231302012


ABNT

Abed Kahnamouei, M.; Bahari, M.; Chaharom, M.E.; Kimyai, S.; Daneshpooy, M.; Katebi, K.; Elhami, B. The effect of preheating on microhardness and flexural strength of bulk-fill resin composites: an in-vitro study. European Oral Research, [Publisher Location], v. 58, n. 3, p. 133-138, 2023.


Chicago: Author-Date Style

Abed Kahnamouei, Mehdi, and Mahmoud Bahari and Mohammad Esmaeel Ebrahimi Chaharom and Soodabeh Kimyai and Mehdi Daneshpooy and Katayoun Katebi and Bahareh Elhami. 2023. “The effect of preheating on microhardness and flexural strength of bulk-fill resin composites: an in-vitro study.” European Oral Research 58, no. 3: 133-138. https://doi.org/10.26650/eor.20231302012


Chicago: Humanities Style

Abed Kahnamouei, Mehdi, and Mahmoud Bahari and Mohammad Esmaeel Ebrahimi Chaharom and Soodabeh Kimyai and Mehdi Daneshpooy and Katayoun Katebi and Bahareh Elhami. “The effect of preheating on microhardness and flexural strength of bulk-fill resin composites: an in-vitro study.” European Oral Research 58, no. 3 (Nov. 2024): 133-138. https://doi.org/10.26650/eor.20231302012


Harvard: Australian Style

Abed Kahnamouei, M & Bahari, M & Chaharom, ME & Kimyai, S & Daneshpooy, M & Katebi, K & Elhami, B 2023, 'The effect of preheating on microhardness and flexural strength of bulk-fill resin composites: an in-vitro study', European Oral Research, vol. 58, no. 3, pp. 133-138, viewed 22 Nov. 2024, https://doi.org/10.26650/eor.20231302012


Harvard: Author-Date Style

Abed Kahnamouei, M. and Bahari, M. and Chaharom, M.E. and Kimyai, S. and Daneshpooy, M. and Katebi, K. and Elhami, B. (2023) ‘The effect of preheating on microhardness and flexural strength of bulk-fill resin composites: an in-vitro study’, European Oral Research, 58(3), pp. 133-138. https://doi.org/10.26650/eor.20231302012 (22 Nov. 2024).


MLA

Abed Kahnamouei, Mehdi, and Mahmoud Bahari and Mohammad Esmaeel Ebrahimi Chaharom and Soodabeh Kimyai and Mehdi Daneshpooy and Katayoun Katebi and Bahareh Elhami. “The effect of preheating on microhardness and flexural strength of bulk-fill resin composites: an in-vitro study.” European Oral Research, vol. 58, no. 3, 2023, pp. 133-138. [Database Container], https://doi.org/10.26650/eor.20231302012


Vancouver

Abed Kahnamouei M, Bahari M, Chaharom ME, Kimyai S, Daneshpooy M, Katebi K, Elhami B. The effect of preheating on microhardness and flexural strength of bulk-fill resin composites: an in-vitro study. European Oral Research [Internet]. 22 Nov. 2024 [cited 22 Nov. 2024];58(3):133-138. Available from: https://doi.org/10.26650/eor.20231302012 doi: 10.26650/eor.20231302012


ISNAD

Abed Kahnamouei, Mehdi - Bahari, Mahmoud - Chaharom, MohammadEsmaeel Ebrahimi - Kimyai, Soodabeh - Daneshpooy, Mehdi - Katebi, Katayoun - Elhami, Bahareh. “The effect of preheating on microhardness and flexural strength of bulk-fill resin composites: an in-vitro study”. European Oral Research 58/3 (Nov. 2024): 133-138. https://doi.org/10.26650/eor.20231302012



TIMELINE


Submitted27.05.2023
Accepted27.09.2023
Published Online30.10.2023

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