Does radiation therapy affect adhesion of tricalcium silicate cements to root dentin?

IF 2.2 3区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE Journal of Applied Oral Science Pub Date : 2023-09-15 eCollection Date: 2023-01-01 DOI:10.1590/1678-7757-2023-0118

Lochan Khullar, Nidambur Vasudev Ballal, Tan Fırat Eyüboğlu, Mutlu Özcan

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Abstract

Objective: This study aimed to analyze the effect of irradiation on the push-out bond strength of mineral trioxide aggregate (MTA) and Biodentine to radicular dentin.

Methodology: A total of 60 extracted mature human teeth with single root canals were categorized into two groups (irradiated and non-irradiated) (n=30). Each group was further divided into two sub-groups based on cements used (Biodentine and MTA). Then, a cumulative radiation dose of 60 Gy was divided into 30 fractions (two Gy for every fraction) and administered for five successive days per week over six weeks. Obturation was then performed using MTA and Biodentine. Afterwards, 1.5 mm thick horizontal sections were procured from the middle one-third of all the specimens and then subjected to push-out bond test. Results were analyzed using one-way analysis of variance with post-hoc Tukey's test.

Results: The bond strength of Biodentine and MTA to irradiated teeth was lower than non-irradiated teeth. Highest push-out bond strength was observed in non-irradiated specimens filled with Biodentine (p=0), followed by irradiated specimens filled with Biodentine (p=0); non-irradiated specimens filled with MTA (p=0); and irradiated specimens filled with MTA (p=0.9).

Conclusion: The push-out bond strength of Biodentine and MTA to root canal dentin decreased significantly post irradiation.

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放射治疗是否影响硅酸三钙水泥与根牙本质的粘附？

目的：分析辐照对三氧化二矿物聚集体（MTA）和生物牙本质对根性牙本质的推出结合强度的影响。方法：将60颗拔除的具有单根管的成熟人类牙齿分为两组（照射组和未照射组）（n=30）。根据使用的水泥，每组进一步分为两个子组（生物牙本质和MTA）。然后，将60Gy的累积辐射剂量分为30个部分（每个部分2 Gy），并在六周内每周连续给药五天。然后使用MTA和Biodentine进行闭塞。然后，从所有试样的中间三分之一处获得1.5mm厚的水平截面，然后进行推出粘结试验。结果采用单因素方差分析和post-hoc Tukey检验进行分析。结果：生物牙本质和MTA与辐照牙齿的结合强度低于未辐照牙齿。在填充有生物牙本质的未辐照样品中观察到最高的推出结合强度（p=0），其次是填充有生物牙本质的辐照样品（p=0）；用MTA填充的未辐照样品（p＝0）；结论：辐照后生物牙本质和MTA对根管牙本质的推出结合强度显著降低。

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来源期刊

Journal of Applied Oral Science 医学-牙科与口腔外科

CiteScore

4.80

自引率

3.70%

发文量

审稿时长

4-8 weeks

期刊介绍： The Journal of Applied Oral Science is committed in publishing the scientific and technologic advances achieved by the dental community, according to the quality indicators and peer reviewed material, with the objective of assuring its acceptability at the local, regional, national and international levels. The primary goal of The Journal of Applied Oral Science is to publish the outcomes of original investigations as well as invited case reports and invited reviews in the field of Dentistry and related areas.