Int J Stomatol

Int J Stomatol ›› 2023, Vol. 50 ›› Issue (6): 669-673.doi: 10.7518/gjkq.2023083

• Original Articles • Previous Articles     Next Articles

Implant surface micromorphological changes after Er: YAG laser irradiation observed under scanning electron microscope

Sun Xu1(),Deng Zhennan2,Wen Cai3,Zhao Ying1()   

  1. 1.Dept. of Stomatology, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
    2.Dept. of Prosthodontics, Affiliated Stomatological Hospital of Wenzhou Medical University, Wenzhou 325000, China
    3.Dept. of Implant and Prosthodontics, Affiliated Stomatological Hospital, Southwest Medical University, Laboratory of Orofacial Reconstruction and Regeneration, Southwest Medical University, Luzhou 646000, China
  • Received:2023-02-06 Revised:2023-06-11 Online:2023-11-01 Published:2023-10-24
  • Contact: Ying Zhao E-mail:sunxu198501@163.com;zhying19@aliyun.com
  • Supported by:
    Xuanwu Hospital Capital Medical University In-hospital Fund (2018-2022)

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Abstract:

Objective This work aimed to investigate the effects of Er: YAG laser irradiation with different modes and parameters on the micromorphology of implant SA, SLA, Xpeed, and RBM surfaces. Methods An Er: YAG laser with wavelength of 2 940 nm was selected under the soft tissue mode (parameter settings of 50 mJ, 10 Hz; 100 mJ, 10 Hz; and 200 mJ, 10 Hz) and hard tissue mode (parameter settings of 100 mJ, 10 Hz and 200 mJ, 10 Hz). Under water cooling with the non-contact mode, the working tip was 1 mm away from the surface of the implants. One point on SA, SLA, Xpeed, and RBM surfaces was irradiated for 5 s. Micromorphological changes of the surfaces before and after laser irradiation were observed under scanning electron microscope (SEM). Results Under SEM observation, for the SA surface in the soft tissue mode, no change was observed under irradiation at 50 mJ, 10 Hz and 100 mJ, 10 Hz. When the energy was increased to 200 mJ, 10 Hz, the micromorphology of the surface was partially melted. For the SLA surface in the soft tissue mode, no change was noted under 50 mJ, 10 Hz irradiation. When the energy was increased to 100 mJ, 10 Hz and 200 mJ, 10 Hz, partial melting and complete melting were observed, respectively. For the SA and SLA surfaces, no changes were observed under the hard tissue mode with 100 mJ, 10 Hz and 200 mJ, 10 Hz irra-diation. For the Xpeed surface and RBM surface in the soft tissue mode under 50 mJ, 10 Hz irradiation, the surface peak collapsed and melted flakily, respectively. When the energy was increased to 100 mJ, 10 Hz and 200 mJ, 10 Hz, partial melting and complete melting were observed on both surfaces, respectively. For the Xpeed surface and RBM surface, no change was observed under 100 mJ, 10 Hz irradiation in the hard tissue mode, whereas partial melting was observed when the energy increased to 200 mJ, 10 Hz. No coating peeling was observed on the Xpeed surface. Conclusion When trea-ting implant surfaces with Er: YAG laser, the energy parameters should be set below 50 mJ, 10 Hz in the soft tissue mode and below 200 mJ, 10 Hz in the hard tissue mode for the SA and SLA surfaces to avoid damage to the implant surface. The soft tissue mode was not suitable for the Xpeed and RBM surfaces, but they could be treated below 100 mJ, 10 Hz in the hard tissue mode.

Key words: Er: YAG laser, implant, micromorphology, surface treatment

CLC Number: 

  • R 783.1

TrendMD: 

Fig 1

SEM observation of implant surfaces after Er: YAG laser treatment"

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