In Vitro Fracture Strength of Primary Canine Teeth Reinforced With Prefabricated and Customized Fiber-Reinforced Post Systems

IF 1.7 Q3 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical and Experimental Dental Research Pub Date : 2024-09-18 DOI:10.1002/cre2.930

Faeze Behzadpour, Nilgoon Pasdar, Ghazaleh Ahmadizenouz, Ali Bijani

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Abstract

Objective

The demand for esthetics has increased in today's world and most parents prefer to preserve their children's primary anterior teeth until their natural exfoliation. However, an intracanal post is required to provide retention for reconstruction of severely damaged anterior teeth due to caries or trauma. Various materials and methods may be used for the fabrication of intracanal posts. This study assessed the fracture strength and fracture mode of primary canine teeth reconstructed with prefabricated and customized polyethylene and glass fiber posts.

Materials and Methods

This in vitro study evaluated 60 extracted primary canine teeth in four groups (n = 15). After pulpectomy and post space preparation with 4 mm depth, composite resin post, prefabricated glass fiber post (Whitepost), customized glass fiber post (Interlig), or customized polyethylene fiber post (Ribbond) were placed in the root canals to provide retention, and the tooth crown was restored with bulk-fill composite resin. The fracture strength was then measured in a universal testing machine. The fracture mode was also evaluated visually.

Results

The mean fracture strength was 22.45 ± 5.06, 33.10 ± 8.5, 30.20 ± 7.33, and 32.61 ± 5.73 N/mm² in the composite resin post, Whitepost, Interlig, and Ribbond groups, respectively. The fracture strength was significantly lower in the composite group than in the remaining three groups (p = 0.000). No other significant differences were found (p > 0.05). Also, no significant difference was observed among the study groups in the fracture mode (p = 0.241).

Conclusion

The composite resin post yielded a significantly lower fracture strength than the prefabricated and customized glass and polyethylene fiber posts, but the fracture mode was not significantly different among the four groups.

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用预制和定制纤维加固桩系统加固的犬原牙的体外断裂强度

目的当今世界对美观的要求越来越高，大多数家长都希望保留孩子的初级前牙，直到其自然脱落。然而，在重建因龋齿或外伤而严重受损的前牙时，需要使用龋内桩来提供固位。制作龋内桩可使用多种材料和方法。本研究评估了使用预制和定制的聚乙烯和玻璃纤维柱重建的犬基牙的断裂强度和断裂模式。材料和方法这项体外研究评估了四组 60 颗拔出的犬基牙（n = 15）。在进行髓腔切除术和深度为 4 毫米的桩间隙预备后，将复合树脂桩、预制玻璃纤维桩（Whitepost）、定制玻璃纤维桩（Interlig）或定制聚乙烯纤维桩（Ribbond）植入根管以提供固位，并用大量填充的复合树脂修复牙冠。然后在万能试验机上测量断裂强度。还对断裂模式进行了目测评估。结果复合树脂桩组、Whitepost 组、Interlig 组和 Ribbond 组的平均断裂强度分别为 22.45 ± 5.06、33.10 ± 8.5、30.20 ± 7.33 和 32.61 ± 5.73 N/mm2。复合树脂组的断裂强度明显低于其余三组（p = 0.000）。没有发现其他明显差异（p > 0.05）。此外，各研究组在断裂模式上也没有发现明显差异（p = 0.241）。结论复合树脂桩的断裂强度明显低于预制和定制的玻璃纤维和聚乙烯纤维桩，但四组之间的断裂模式没有明显差异。

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来源期刊

Clinical and Experimental Dental Research DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

3.30

自引率

5.60%

发文量

165

审稿时长

26 weeks

期刊介绍： Clinical and Experimental Dental Research aims to provide open access peer-reviewed publications of high scientific quality representing original clinical, diagnostic or experimental work within all disciplines and fields of oral medicine and dentistry. The scope of Clinical and Experimental Dental Research comprises original research material on the anatomy, physiology and pathology of oro-facial, oro-pharyngeal and maxillofacial tissues, and functions and dysfunctions within the stomatognathic system, and the epidemiology, aetiology, prevention, diagnosis, prognosis and therapy of diseases and conditions that have an effect on the homeostasis of the mouth, jaws, and closely associated structures, as well as the healing and regeneration and the clinical aspects of replacement of hard and soft tissues with biomaterials, and the rehabilitation of stomatognathic functions. Studies that bring new knowledge on how to advance health on the individual or public health levels, including interactions between oral and general health and ill-health are welcome.