不同时间段暴露于不同波长的二极管激光后，人体根表面结构和成分变化的比较：一项体外研究
Comparison Between Structural and Compositional Changes of Human Root Surface on Exposure to Different Wavelengths of Diode Lasers for Different Time Frames: An In-Vitro Study.
摘要(中文译文)
背景 二极管激光越来越多地被用作牙周治疗的辅助手段，因为其具有根面去污染和减少生物膜的潜力。然而，其对根面结构和成分完整性的影响取决于所使用的照射参数。目的 评估并比较离体人单根恒牙牙根在660 nm和810 nm二极管激光照射30秒和45秒后的结构和成分变化。材料与方法 本体外研究纳入52颗离体人单根恒牙，分为四组（每组n=13）：第1组，660 nm照射30秒；第2组，660 nm照射45秒；第3组，810 nm照射30秒；第4组，810 nm照射45秒。激光处理后，使用Ra、Rq和Rz参数评估表面粗糙度。通过扫描电子显微镜（SEM）评估形态学变化，并使用能量色散X射线分析（EDAX）分析元素组成。表面粗糙度的组间比较采用Welch方差分析（ANOVA），随后进行成对事后检验。结果 表面粗糙度从第1组至第4组逐渐增加。平均Ra值从第1组的0.0031±0.0002 µm至第4组的0.0123±0.0014 µm。Rq和Rz也呈现相似趋势。Ra、Rq和Rz的组间差异均具有统计学意义（p<0.001）。成对分析显示第1组与第2组之间无显著差异，而其他所有比较均有显著差异。EDAX分析显示从第1组至第4组碳和氧增加，磷和钙减少。SEM结果也显示随着波长和暴露时间的增加，表面改变逐渐加重。结论 二极管激光照射在根面产生波长和时间依赖性的结构和成分变化。810 nm照射45秒时观察到最大改变，提示应谨慎选择激光参数以尽量减少过度的根面损伤。
Abstract
Background Diode lasers are increasingly used as adjuncts in periodontal therapy because of their potential for root surface decontamination and biofilm reduction. However, their effects on the structural and compositional integrity of the root surface depend on the irradiation parameters used. Aim To evaluate and compare the structural and compositional changes in the roots of extracted human single-rooted permanent teeth after diode laser irradiation at 660 nm and 810 nm for 30 and 45 seconds. Materials and methods This in vitro study included 52 extracted human single-rooted permanent teeth, which were divided into four groups (n=13 each): Group 1, 660 nm for 30 seconds; Group 2, 660 nm for 45 seconds; Group 3, 810 nm for 30 seconds; and Group 4, 810 nm for 45 seconds. After laser application, surface roughness was assessed using Ra, Rq, and Rz parameters. Morphological changes were evaluated by scanning electron microscopy (SEM), and elemental composition was analyzed using energy-dispersive X-ray analysis (EDAX). Intergroup comparison of surface roughness was performed using Welch analysis of variance (ANOVA) followed by pairwise post hoc testing. Results Surface roughness increased progressively from Group 1 to Group 4. Mean Ra values ranged from 0.0031±0.0002 µm in Group 1 to 0.0123±0.0014 µm in Group 4. Similar trends were seen for Rq and Rz. Intergroup differences were statistically significant for Ra, Rq, and Rz (p<0.001 for all). Pairwise analysis showed no significant difference between Groups 1 and 2, whereas all other comparisons were significant. EDAX analysis showed increasing carbon and oxygen and decreasing phosphorus and calcium from Group 1 to Group 4. SEM findings also showed progressively greater surface alteration with increasing wavelength and exposure duration. Conclusion Diode laser irradiation produced wavelength- and time-dependent structural and compositional changes on the root surface. The greatest alterations were observed with 810 nm irradiation for 45 seconds, indicating that laser parameters should be selected cautiously to minimize excessive root surface damage.
如何引用
AMA
Abhinandan K Bokriya, Pramod F Waghmare, Prashant Rao, Devashri Newaskar, Manasi Yewale, Sanpreet S Sachdev. Comparison Between Structural and Compositional Changes of Human Root Surface on Exposure to Different Wavelengths of Diode Lasers for Different Time Frames: An In-Vitro Study.. Cureus. 2026; doi:10.7759/cureus.108933.
APA
Abhinandan K Bokriya, Pramod F Waghmare, Prashant Rao, Devashri Newaskar, Manasi Yewale, Sanpreet S Sachdev (2026). Comparison Between Structural and Compositional Changes of Human Root Surface on Exposure to Different Wavelengths of Diode Lasers for Different Time Frames: An In-Vitro Study.. Cureus. https://doi.org/10.7759/cureus.108933
GB/T 7714
Abhinandan K Bokriya, Pramod F Waghmare, Prashant Rao, Devashri Newaskar, Manasi Yewale, Sanpreet S Sachdev. Comparison Between Structural and Compositional Changes of Human Root Surface on Exposure to Different Wavelengths of Diode Lasers for Different Time Frames: An In-Vitro Study.[J]. Cureus, 2026 doi:10.7759/cureus.108933.
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