Machining-induced thermal damage in cortical bone: Necrosis and micro-mechanical integrity

Robles-Linares, Jose A.; Axinte, Dragoş; Liao, Zhirong; Gameros, Andres

doi:10.1016/j.matdes.2020.109215

Cited by 32 publications

(29 citation statements)

References 57 publications

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“…The main heat will be transported via the screw and tool instead of the surrounding tissue. This is also confirmed when considering the measured width of the necrotic area during drilling with twist drills by Robles-Linares et al [36]. Drilling with a cutting speed of v c = 8.5 m/min and a feed rate of f n = 0.2 mm/rev resulted in temperatures of about 62 • C and a maximum depth of the necrotic zone of 50 µm was measured.…”

Section: Discussionsupporting

confidence: 78%

An Experimental Method to Determine the Interstitial Splitting Forces and Thermal Load Input Induced by Self-Tapping and Self-Drilling Bone Screws: A Pilot Study

et al. 2021

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Background: The aim is to evaluate methods to quantify the interstitial splitting force and thermal load input of self-tapping and self-drilling osteosynthesis screws. Methods: A specialized modular test bench was developed to measure the induced splitting force of self-drilling and self-tapping osteosynthesis screws using porcine mandibular bone. In addition, a fundamentally new approach to measure the temperature near the contact zone of osteosynthesis screws (fiber-optic sensor in the axis of the screw) was established. Results: The self-drilling screw type induces a splitting force of about 200 N in the surrounding tissue, so that microdamage of the bone and increased resorption can be assumed. Even pre-drilling induces a short-time force into the tissue, which is comparable to the splitting force of the self-tapping screw. The temperature increase in the screw is clearly higher compared to the temperature increase in the surrounding tissue, but no significant difference in temperature between the two screw types could be measured. Based on the measured temperatures of both screw types, the temperature increase in the contact zone is considered critical. Complications during the screwing process caused by the manual tool guidance resulted in numerous breakages of the fiber-optic sensors. Conclusions: The developed methods provide additional insight regarding the thermomechanical load input of self-drilling and self-tapping screws. However, based upon the optical fiber breakages, additional refinement of this technique may still be required.

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Section: Discussionsupporting

confidence: 78%

An Experimental Method to Determine the Interstitial Splitting Forces and Thermal Load Input Induced by Self-Tapping and Self-Drilling Bone Screws: A Pilot Study

et al. 2021

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“…The measured necrosis zones for all cutting parameters were obtained below 400 μm depth like early studies in which bone drilling operations F I G U R E 8 Effect of point angle and helix angle on T max F I G U R E 9 Effect of drill diameter on T max have been performed with similar cutting parameters. In the study by Robles et al, 43 it was observed that necrosis zones had formed within 420 μ depth.…”

Section: Discussionmentioning

confidence: 94%

“…In cortical bone drilling, regions where the temperature rises to 47 C and above were accepted as the necrosis threshold as in early studies. 34,43,44 The FEM mesh structure and the visualization stage of the necrosis zone are given in Figure 2. Temperatures of 47 C and above were visually represented by red tint in the temperature legend.…”

Section: Finite Element Methods (Fem)mentioning

confidence: 99%

“…The temperature values and necrosis zones at a depth of 500 μ from the cutting surface were obtained by FEM analysis. In cortical bone drilling, regions where the temperature rises to 47°C and above were accepted as the necrosis threshold as in early studies 34,43,44 . The FEM mesh structure and the visualization stage of the necrosis zone are given in Figure 2.…”

Section: Methodsmentioning

confidence: 99%

“…Since in many studies the variation of drilling parameters was compared in terms of the maximum temperatures obtained in the domain, the effect of parameter variation on the maximum temperature was investigated in this study. 42,43 Fixed parameters used in parametric study were given in Table 7.…”

Section: Effects Of High Cutting Speed On Cortical Bone Drillingmentioning

confidence: 99%

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Machining-induced thermal damage in cortical bone: Necrosis and micro-mechanical integrity

Cited by 32 publications

References 57 publications

An Experimental Method to Determine the Interstitial Splitting Forces and Thermal Load Input Induced by Self-Tapping and Self-Drilling Bone Screws: A Pilot Study

An Experimental Method to Determine the Interstitial Splitting Forces and Thermal Load Input Induced by Self-Tapping and Self-Drilling Bone Screws: A Pilot Study

An analytical and numerical approach to the determination of thermal necrosis in cortical bone drilling

Machinability of ultrasonic vibration-assisted micro-grinding in biological bone using nanolubricant

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