Comparative evaluation of fracture resistance of core materials restored by pediatric stainless-steel crowns: An in vitro study

Noura A. Alessa; Rahaf O.  Alkadi; Sara K.  Alawad; Manal A.  Almutairi; Zain  Hafiz; Majedah  Al-Homaidhi; Rehab  Allam

doi:10.3989/revmetalm.e282.1710

Authors

Noura A. Alessa Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University https://orcid.org/0000-0002-1354-9807
Rahaf O. Alkadi Department of Prosthodontics, King Abdulaziz Medical City https://orcid.org/0009-0000-6268-6376
Sara K. Alawad College of Dentistry, King Saud University https://orcid.org/0009-0000-9583-8460
Manal A. Almutairi Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University https://orcid.org/0000-0002-2189-3210
Zain Hafiz Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University https://orcid.org/0000-0002-6358-482X
Majedah Al-Homaidhi Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University https://orcid.org/0009-0004-7257-3649
Rehab Allam Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University https://orcid.org/0009-0008-4654-6646

DOI:

https://doi.org/10.3989/revmetalm.e282.1710

Keywords:

Core materials, Fracture resistance, Pediatric crowns, Primary teeth crown, Stainless steel crowns

Abstract

Pediatric stainless-steel crowns (SSCs) have long been a preferred choice for treating carious posterior primary molars due to their durability and ease of application. This study aimed to assess and compare the fracture resistance of three different core restorative materials: resin-modified glass ionomer (RMGI), Tetric N-Ceram composite, and Empress composite when used in conjunction with SSCs. A total of 120 SSCs for primary molars were utilized, divided into three groups of 40 crowns each, with each group restored using one of the designated core materials. Following restoration, the samples were stored at 37°C for 48 hours and subsequently subjected to fracture resistance testing using a universal testing machine. The Empress Composite group demonstrated the highest fracture resistance, with a mean value of 92, followed by the Tetric N-Ceram Composite group at 32, and the RMGI group at 31. Statistical analysis revealed that the Empress Composite group’s fracture resistance was significantly greater than that of the other two groups (p< 0.05), while no significant difference was observed between the Tetric N-Ceram and RMGI groups. These findings highlight a clear relationship between the choice of core material and the fracture resistance of SSC restorations, with Empress Composite emerging as the most durable option among those tested.

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