PDF(Pubmed)
Abstract：
UNASSIGNED: This study was conducted to evaluate the mechanical properties of relined and non-relined fiberglass posts when cemented to root canal dentin using a conventional dual-cure resin cement or a self-adhesive resin cement.
UNASSIGNED: Two types of resin cements were utilized: conventional and self-adhesive. Additionally, 2 cementation protocols were employed, involving relined and non-relined fiberglass posts. In total, 72 bovine incisors were cemented and subjected to push-out bond strength testing (n = 10) followed by failure mode analysis. The cross-sectional microhardness (n = 5) was assessed along the root canal, and interface analyses (n = 3) were conducted using scanning electron microscopy (SEM). Data from the push-out bond strength and cross-sectional microhardness tests were analyzed via 3-way analysis of variance and the Bonferroni post-hoc test (α = 0.05).
UNASSIGNED: For non-relined fiberglass posts, conventional resin cement exhibited higher push-out bond strength than self-adhesive cement. Relined fiberglass posts yielded comparable results between the resin cements. Type II failure was the most common failure mode for both resin cements, regardless of cementation protocol. The use of relined fiberglass posts improved the cross-sectional microhardness values for both cements. SEM images revealed voids and bubbles in the incisors with non-relined fiberglass posts.
UNASSIGNED: Mechanical properties were impacted by the cementation protocol. Relined fiberglass posts presented the highest push-out bond strength and cross-sectional microhardness values, regardless of the resin cement used (conventional dual-cure or self-adhesive). Conversely, for non-relined fiberglass posts, the conventional dual-cure resin cement yielded superior results to the self-adhesive resin cement.
UNASSIGNED: Two types of resin cements were utilized: conventional and self-adhesive. Additionally, 2 cementation protocols were employed, involving relined and non-relined fiberglass posts. In total, 72 bovine incisors were cemented and subjected to push-out bond strength testing (n = 10) followed by failure mode analysis. The cross-sectional microhardness (n = 5) was assessed along the root canal, and interface analyses (n = 3) were conducted using scanning electron microscopy (SEM). Data from the push-out bond strength and cross-sectional microhardness tests were analyzed via 3-way analysis of variance and the Bonferroni post-hoc test (α = 0.05).
UNASSIGNED: For non-relined fiberglass posts, conventional resin cement exhibited higher push-out bond strength than self-adhesive cement. Relined fiberglass posts yielded comparable results between the resin cements. Type II failure was the most common failure mode for both resin cements, regardless of cementation protocol. The use of relined fiberglass posts improved the cross-sectional microhardness values for both cements. SEM images revealed voids and bubbles in the incisors with non-relined fiberglass posts.
UNASSIGNED: Mechanical properties were impacted by the cementation protocol. Relined fiberglass posts presented the highest push-out bond strength and cross-sectional microhardness values, regardless of the resin cement used (conventional dual-cure or self-adhesive). Conversely, for non-relined fiberglass posts, the conventional dual-cure resin cement yielded superior results to the self-adhesive resin cement.
摘要：
■进行这项研究是为了评估使用常规的双重固化树脂水泥或自粘树脂水泥胶结至根管牙本质时，重新连接和非重新连接的玻璃纤维桩的机械性能。
■使用了两种类型的树脂水泥：常规和自粘。此外,采用了2种胶结方案，涉及加固和非加固玻璃纤维柱。总的来说,对72个牛门牙进行胶结，并进行了推出粘结强度测试（n=10），然后进行了破坏模式分析。沿根管评估横截面显微硬度（n=5），和界面分析(n=3)使用扫描电子显微镜(SEM)进行。通过3向方差分析和Bonferroni事后检验（α=0.05）分析了推出粘结强度和横截面显微硬度测试的数据。
■对于非中继玻璃纤维支柱，常规树脂水泥比自粘水泥具有更高的挤出粘结强度。相关的玻璃纤维柱在树脂粘固剂之间产生了可比的结果。II型失效是两种树脂水泥最常见的失效模式，无论胶结方案如何。重新连接的玻璃纤维柱的使用改善了两种水泥的横截面显微硬度值。SEM图像显示门牙中的空隙和气泡与未保留的玻璃纤维桩。
■机械性能受到胶结方案的影响。Relined玻璃纤维柱具有最高的推出粘结强度和横截面显微硬度值，无论使用的树脂水泥（传统的双重固化或自粘）。相反，对于非加固玻璃纤维柱，传统的双重固化树脂水泥比自粘树脂水泥效果更好。
■使用了两种类型的树脂水泥：常规和自粘。此外,采用了2种胶结方案，涉及加固和非加固玻璃纤维柱。总的来说,对72个牛门牙进行胶结，并进行了推出粘结强度测试（n=10），然后进行了破坏模式分析。沿根管评估横截面显微硬度（n=5），和界面分析(n=3)使用扫描电子显微镜(SEM)进行。通过3向方差分析和Bonferroni事后检验（α=0.05）分析了推出粘结强度和横截面显微硬度测试的数据。
■对于非中继玻璃纤维支柱，常规树脂水泥比自粘水泥具有更高的挤出粘结强度。相关的玻璃纤维柱在树脂粘固剂之间产生了可比的结果。II型失效是两种树脂水泥最常见的失效模式，无论胶结方案如何。重新连接的玻璃纤维柱的使用改善了两种水泥的横截面显微硬度值。SEM图像显示门牙中的空隙和气泡与未保留的玻璃纤维桩。
■机械性能受到胶结方案的影响。Relined玻璃纤维柱具有最高的推出粘结强度和横截面显微硬度值，无论使用的树脂水泥（传统的双重固化或自粘）。相反，对于非加固玻璃纤维柱，传统的双重固化树脂水泥比自粘树脂水泥效果更好。
