To avoid excessive tissue removal and collateral damage, the high‐power density laser is apt for dental surgery also need to have high precision. For high‐precision dental surgery with minimal tissue damage, the present work frames a method to predict laser ablation profile based on surface morphology and chemical composition of dentin. The surface morphology and chemical composition were studied on different dentin samples using scanning electron microscope (SEM) and Energy Dispersive X‐ray Analysis (EDAX), respectively. The key laser ablation parameters (ω₀, D_eff, and F_th) were determined by laser irradiation study using 800 nm, Ti:Sapphire femtosecond laser at processing condition of 100 fs, 10 kHz and 10 mm/s. The dentin samples show a strong linear correlation between physiochemical characteristics and laser ablation parameters. The surface morphology exhibits a negative linear correlation with threshold fluence, whereas the converse is true for chemical composition. The laser ablation parameters of a random dentin sample are derived from the knowledge of linearity data. From the obtained laser ablation parameters, the complete theoretical ablation profile is constructed and validated with experimental ablation profile. Even though the surface morphology of dentin shows high linearity, the concentration of Ca and P can be used as the most feasible probe in clinical settings. Furthermore, the laser ablation rate and ablation efficiency are predicted by the method to optimize the laser processing condition for any specific teeth. The versatility of the method overcomes the problem of heterogeneity on various teeth and simplifies the method of finding optimal laser processing condition for immaculate laser surgery.

中文翻译：

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理化特性：克服牙齿异质性预测激光消融轮廓的强大工具

为了避免过度的组织切除和附带损伤，适用于牙科手术的高功率密度激光也需要具有较高的精度。对于组织损伤最小的高精度牙科手术，目前的工作构建了一种基于表面形态和牙本质化学成分预测激光消融轮廓的方法。分别使用扫描电子显微镜（SEM）和能量色散X射线分析（EDAX）研究了不同牙本质样品的表面形态和化学成分。关键激光烧蚀参数（ω ₀、D _eff和F _th) 是通过使用 800 nm、Ti:Sapphire 飞秒激光器在 100 fs、10 kHz 和 10 mm/s 的加工条件下通过激光辐照研究确定的。牙本质样品在理化特性和激光消融参数之间表现出很强的线性相关性。表面形态与阈值注量呈负线性相关，而化学成分则相反。随机牙本质样品的激光烧蚀参数来源于线性数据的知识。根据获得的激光烧蚀参数，构建完整的理论烧蚀轮廓并通过实验烧蚀轮廓进行验证。尽管牙本质的表面形态表现出高线性，但 Ca 和 P 的浓度可用作临床环境中最可行的探针。此外，通过该方法预测激光烧蚀率和烧蚀效率，以优化任何特定牙齿的激光加工条件。该方法的通用性克服了各种牙齿的异质性问题，简化了为完美激光手术寻找最佳激光加工条件的方法。