Chun Kyung A, Kum Kee-Yeon, Lee Woo-Cheol, Baek Seung-Ho, Choi Hae-Won, Shon Won-Jun
Department of Conservative Dentistry, Dental Research Institute and School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea.
Department of Conservative Dentistry, Korea University Anam Hospital, 73, Inchon-ro, Seongbuk-gu, Seoul, 02841, South Korea.
BMC Oral Health. 2017 Jul 11;17(1):110. doi: 10.1186/s12903-017-0396-z.
Although many studies have compared the properties of ultrasonic scaling instruments, it remains controversial as to which is most suitable for implant scaling. This study evaluated the safety and efficiency of novel metallic ultrasonic scaler tips made by the powder injection molding (PIM) technique on titanium surfaces.
Mechanical instrumentation was carried out using four types of metal scaler tips consisting of copper (CU), bronze (BR), 316 L stainless steel (316 L), and conventional stainless steel (SS) tips. The instrumented surface alteration image of samples was viewed with scanning electron microscope (SEM) and surface profile of the each sample was investigated with confocal laser scanning microscopy (CLSM). Arithmetic mean roughness (Ra) and maximum height roughness (Rmax) of titanium samples were measured and dissipated power of the scaler tip was estimated for scaling efficiency.
The average Ra values caused by the 316 L and SS tip were about two times higher than those of the CU and BR tips (p < 0.05). The Rmax value showed similar results. The efficiency of the SS tip was about 3 times higher than that of CU tip, the 316 L tip is about 2.7 times higher than that of CU tip, and the BR tip is about 1.2 times higher than that of CU tip.
Novel metallic bronze alloy ultrasonic scaler tip minimally damages titanium surfaces, similar to copper alloy tip. Therefore, this bronze alloy scaler tip may be promising instrument for implant maintenance therapy.
尽管许多研究已经比较了超声洁治器械的性能，但对于哪种器械最适合用于种植体洁治仍存在争议。本研究评估了采用粉末注射成型（PIM）技术制造的新型金属超声洁治器尖端在钛表面的安全性和效率。
使用由铜（CU）、青铜（BR）、316L不锈钢（316L）和传统不锈钢（SS）尖端组成的四种类型的金属洁治器尖端进行机械器械操作。用扫描电子显微镜（SEM）观察样品的器械处理后表面改变图像，并用共聚焦激光扫描显微镜（CLSM）研究每个样品的表面轮廓。测量钛样品的算术平均粗糙度（Ra）和最大高度粗糙度（Rmax），并估计洁治器尖端的耗散功率以评估洁治效率。
316L和SS尖端引起的平均Ra值比CU和BR尖端高约两倍（p < 0.05）。Rmax值显示出类似结果。SS尖端的效率比CU尖端高约3倍，316L尖端比CU尖端高约2.7倍，BR尖端比CU尖端高约1.2倍。
新型金属青铜合金超声洁治器尖端对钛表面的损伤最小，类似于铜合金尖端。因此，这种青铜合金洁治器尖端可能是用于种植体维护治疗的有前景的器械。
