Coating stability and surface characteristics of esthetic orthodontic coated archwires
Coating stability and surface characteristics of esthetic orthodontic coated archwires
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DOI：
10.2319/111112-866.1
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发表时间：
2013-11-01
影响因子：
3.4
通讯作者：
de Oliveira Ruellas, Antonio Carlos
中科院分区：
文献类型：
--
作者：
da Silva, Dayanne Lopes;Mattos, Claudia Trindade;de Oliveira Ruellas, Antonio Carlos
目的：与传统不锈钢（SS）和镍钛（NiTi）弓丝相比，评估四种品牌的美观涂层矩形弓丝的涂层厚度及其在口腔暴露21天后的表面特征和涂层稳定性。材料与方法：用体视镜和扫描电子显微镜观察所选弓丝的唇表面，并用原子力显微镜评估表面粗糙度。使用 Image Pro Plus 4.5 软件测量收到的电线的涂层厚度和回收电线的唇表面涂层损失的百分比。结果：所有组的平均涂层厚度均小于 0.002 英寸。口腔暴露后，两组的弓丝失去了唇表面的所有涂层。平均而言，其他两组各有 28.71% 和 72.90% 的涂层损失，且剩余涂层的表面粗糙度高于临床后对照线。结论：涂层弓丝的美观价值较低，因为它们呈现出不耐用的涂层。与临床后对照对应物（传统不锈钢和镍钛丝）相比，剩余涂层表现出严重劣化和更大的表面粗糙度。
Objective: To evaluate the coating thickness of four brands of as-received esthetic coated rectangular archwires and their surface characteristics and coating stability after 21 days of oral exposure compared to those of conventional stainless steel (SS) and nickel titanium (NiTi) ones.Materials and Methods: The labial surface of the selected archwires was observed with a stereoscope and in a scanning electron microscope, and surface roughness was assessed with an atomic force microscope. The coating thickness of as-received wires and the percentage of coating lost on the labial surface of retrieved wires were measured using Image Pro Plus 4.5 software.Results: All groups showed an average coating thickness of less than 0.002 inches. After oral exposure, archwires from two groups lost all coating on the labial surface. On average, 28.71% and 72.90% of the coating was lost in each of the other two groups, and the surface roughness of the remaining coating was higher than postclinical control wires.Conclusion: Coated archwires had a low esthetic value as they presented a nondurable coating. The remaining coating showed a severe deterioration and a greater surface roughness than postclinical control counterparts (conventional SS and NiTi wires).