Fornaini Carlo, Merigo Elisabetta, Poli Federica, Cavatorta Chiara, Rocca Jean-Paul, Selleri Stefano, Cucinotta Annamaria
Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze 181/A, 43124 Parma, Italy.
Micoralis Laboratory, Faculty of Dentistry, University of Cote d'Azur, 24 Avenue des Diables Bleus, 06357 Nice, France.
Laser Ther. 2017 Dec 31;26(4):311-318. doi: 10.5978/islsm.17-OR-21.
The aim of this study was to demonstrate the performances of 1070 nm fiber lasers for the ablation of oral tissues through the evaluation of the histological modifications made by a blind pathologist and the measurement of the thermal elevation during laser irradiation by a sensor based on a fiber Bragg grating.
The source used was a pulsed fiber laser emitting at 1070 nm, with 20 W maximum average output power and 100 ns fixed pulse duration. Different tests were performed by changing the laser parameters, particularly the peak power of the pulses and the repetition rate.
The tissue of the measurements demonstrated that the best properties in term of cutting capability and, at the same time, the lower thermal damages to the tissues can be obtained with a peak power of 3 kW, a repetition rate of 50 kHz and a speed of 5 mm/s.
This study showed that 1070 nm fiber lasers can be very useful in oral surgery, since they provide a reduced thermal elevation in the irradiated tissues, thus consequently respecting their biological structures. Moreover, this work demonstrates that FBG sensors, based on the optical fiber technology as the laser source considered for the tests, may be good instruments to record thermal elevation when applied to the studies on animal models.
本研究的目的是通过由一位不知情的病理学家评估组织学改变以及使用基于光纤布拉格光栅的传感器测量激光照射期间的热升高，来证明1070纳米光纤激光器对口腔组织的消融性能。
所使用的光源是一台发射波长为1070纳米的脉冲光纤激光器，最大平均输出功率为20瓦，固定脉冲持续时间为100纳秒。通过改变激光参数，特别是脉冲的峰值功率和重复频率，进行了不同的测试。
测量组织表明，在切割能力方面具有最佳性能，同时对组织热损伤较低的条件是峰值功率为3千瓦、重复频率为50千赫兹且速度为5毫米/秒。
本研究表明，1070纳米光纤激光器在口腔外科手术中可能非常有用，因为它们在受照射组织中产生的热升高较小，从而能够保护其生物结构。此外，这项工作表明，基于光纤技术的光纤布拉格光栅传感器，如同测试中所考虑的激光源一样，在应用于动物模型研究时，可能是记录热升高的良好工具。
