Abstract：
OBJECTIVE: This study compared a dual-wavelength diode laser and an Er, Cr:YSGG laser in oral soft tissue incisions to determine the most effective and safest laser system at the histopathological level.
METHODS: The (810 and 980 nm) dual-wavelength diode laser was used at 1.5 W and 2.5 W (CW) power settings, and the (2780 nm) Er, Cr:YSGG laser was used at 2.5 W and 3.5 W (PW) power settings. Both laser systems were used to incise the tissues of freshly dissected sheep tongue pieces to obtain the following histopathological criteria: epithelial tissue changes, connective tissue changes, and lateral thermal damage extent by optical microscopy.
RESULTS: The epithelial and connective tissue damage scores were significantly higher in the dual-wavelength diode laser groups than in the Er, Cr:YSGG laser groups (P<0.001), and there was a significant difference between some groups. The extent of lateral thermal damage was also significantly higher in the diode laser groups than in the Er, Cr: YSGG laser groups (P<0.001), and there was a significant difference between groups. Group 2 (2.5 W) of the diode laser was the highest for all three criteria, while group 3 (2.5 W) of the Er, Cr:YSGG laser was the lowest.
CONCLUSIONS: The Er, Cr:YSGG laser with an output power of 2.5 W is, histologically, the most effective and safest laser for oral soft tissue incision. The dual-wavelength diode laser causes more damage than the Er, Cr:YSGG laser, but it can be used with a low output power and 1 mm safety distance in excisional biopsy.
METHODS: The (810 and 980 nm) dual-wavelength diode laser was used at 1.5 W and 2.5 W (CW) power settings, and the (2780 nm) Er, Cr:YSGG laser was used at 2.5 W and 3.5 W (PW) power settings. Both laser systems were used to incise the tissues of freshly dissected sheep tongue pieces to obtain the following histopathological criteria: epithelial tissue changes, connective tissue changes, and lateral thermal damage extent by optical microscopy.
RESULTS: The epithelial and connective tissue damage scores were significantly higher in the dual-wavelength diode laser groups than in the Er, Cr:YSGG laser groups (P<0.001), and there was a significant difference between some groups. The extent of lateral thermal damage was also significantly higher in the diode laser groups than in the Er, Cr: YSGG laser groups (P<0.001), and there was a significant difference between groups. Group 2 (2.5 W) of the diode laser was the highest for all three criteria, while group 3 (2.5 W) of the Er, Cr:YSGG laser was the lowest.
CONCLUSIONS: The Er, Cr:YSGG laser with an output power of 2.5 W is, histologically, the most effective and safest laser for oral soft tissue incision. The dual-wavelength diode laser causes more damage than the Er, Cr:YSGG laser, but it can be used with a low output power and 1 mm safety distance in excisional biopsy.
摘要：
目的：本研究比较了双波长二极管激光器和Er，Cr：YSGG激光在口腔软组织切口中确定组织病理学水平上最有效和最安全的激光系统。
方法：在1.5W和2.5W（CW）功率设置下使用（810和980nm）双波长二极管激光器，和(2780nm)Er，Cr:YSGG激光器在2.5W和3.5W(PW)功率设置下使用。两种激光系统均用于切开新鲜解剖的绵羊舌片的组织，以获得以下组织病理学标准：上皮组织变化，结缔组织改变,光学显微镜的横向热损伤程度。
结果：双波长二极管激光组的上皮和结缔组织损伤评分明显高于Er，Cr:YSGG激光组(P<0.001),某些组之间存在显着差异。二极管激光器组的横向热损伤程度也明显高于Er,Cr:YSGG激光组(P<0.001),组间有显著差异。二极管激光器的第2组（2.5W）在所有三个标准中都是最高的，而Er的第3组（2.5W），Cr:YSGG激光最低。
结论：Er，Cr:YSGG激光器的输出功率为2.5W,组织学上,最有效和最安全的激光用于口腔软组织切口。双波长二极管激光器比Er造成更多的损坏，Cr:YSGG激光器，但它可以用于低输出功率和1毫米的安全距离切除活检。
方法：在1.5W和2.5W（CW）功率设置下使用（810和980nm）双波长二极管激光器，和(2780nm)Er，Cr:YSGG激光器在2.5W和3.5W(PW)功率设置下使用。两种激光系统均用于切开新鲜解剖的绵羊舌片的组织，以获得以下组织病理学标准：上皮组织变化，结缔组织改变,光学显微镜的横向热损伤程度。
结果：双波长二极管激光组的上皮和结缔组织损伤评分明显高于Er，Cr:YSGG激光组(P<0.001),某些组之间存在显着差异。二极管激光器组的横向热损伤程度也明显高于Er,Cr:YSGG激光组(P<0.001),组间有显著差异。二极管激光器的第2组（2.5W）在所有三个标准中都是最高的，而Er的第3组（2.5W），Cr:YSGG激光最低。
结论：Er，Cr:YSGG激光器的输出功率为2.5W,组织学上,最有效和最安全的激光用于口腔软组织切口。双波长二极管激光器比Er造成更多的损坏，Cr:YSGG激光器，但它可以用于低输出功率和1毫米的安全距离切除活检。
