• Surface Tension: This phenomenon arises from the cohesive forces between mol-

ecules at the surface of a liquid, minimizing its surface area and leading to effects

• Nanotechnology: Controlling interaction forces at the nanoscale is crucial for

Understanding contact mechanics necessitates considering the various forces inu­encing interacting surfaces:

• Non-conformity: When surfaces have different shapes, contact concentrates at

distribution and wear resistance.

• Damping and Energy Absorption: Materials that dissipate energy effectively

Contact Models

Researchers utilize various analytical and numerical models to simulate and predict contact mechanics in biotribology:

normal loading, providing insights into joint contact mechanics.

individual asperities, offering a more realistic view of contact in non-ideal

Understanding contact mechanics plays a crucial role in comprehending biotribo­logical phenomena:

• Friction Reduction: By optimizing contact area, material properties, and lubrica-

tion, organisms minimize friction in joints, teeth, and other interfaces.

From Understanding to Innovation

Delving into contact mechanics empowers biotribologists to:

Biotribology, the intricate dance between biology and surface interactions, tran­scends mere observation. It delves into the diverse biological aspects present in living organisms, from the microscopic world of microorganisms to the metabolic intricacies of the host, unlocking fascinating insights into tribological phenomena. In this exploration, we’ll focus on microorganisms, host metabolism, and targeting strategies, revealing their profound impact on biological interfaces.

Microbial Inuences

• Tribocorrosion: The combined action of wear and microbial corrosion can sig-

repair. Biotribology investigates these pathways to identify potential targets for

therapeutic interventions or material design.

• Antimicrobial Coatings: These coatings aim to prevent biolm formation on

pathways inuence tribological processes, researchers can develop strategies to

modulate them for therapeutic or material design purposes.

• Gene Editing for Host Modulation: Precisely editing genes in the host organism

to optimize lubrication production, reduce inammation, or enhance tissue repair

Natural synovial joints exemplify remarkable tribological systems. Their bearing surfaces consist of articular cartilage, lubricated by synovial uid. Articular carti­lage is characterized by its unique biphasic nature, comprising both solid elements (including collagen bers and proteoglycan-rich ground substance) and uid phases. Understanding these unique biphasic properties is crucial for elucidating the lubri­cation mechanisms within the synovial joint. Additionally, synovial uid contrib­utes its own vital constituents, like hyaluronic acid and lubricin, both signicant for joint lubrication. Finally, the dynamic mechanical environment generated by load and speed also plays a critical role in shaping the tribological mechanisms at play.

Further complicating matters, patient-specic anatomical variations, loading/ motion patterns, and surgical techniques signicantly impact how the joint implant functions within the body. Consequently, integrating tribological studies with bio­logical and clinical investigations of articial joints becomes paramount.

By integrating ndings from these diverse investigative avenues, oral tribology research aims to unravel the intricate interplay of friction, wear, and lubrication within the oral cavity. Alloy design and fabrication plays an integral role in the per­formances [74–80]. Laser-assisted fabrication can be a potential method in tuning the surface and texture [81–93]. This knowledge has the potential to inform the development of improved dental materials, optimize oral hygiene practices, and contribute to advancements in orthodontic treatments [84–93].

Biotribology, the study of tribological phenomena in biological systems, stands as one of the most captivating and rapidly expanding areas of current research. Driven by the pursuit of improved quality of life and inspired by the remarkable efciency of natural tribological systems, investigations in fundamental theories, biomimetic design and fabrication, and mitigation of tribology-related damage have ourished. While signicant progress has been made, numerous challenges remain to be addressed. Bridging the gap between diverse disciplines is crucial for continued advancement. We advocate for close collaboration among scientists, engineers, and clinicians, encompassing expertise in areas ranging from mechanical surfaces and interfaces to biology, materials science, physics, chemistry, and engineering.

The biological aspects of biotribology extend far beyond simply observing organisms. By understanding the complex interplay between microorganisms, host metabolism, and tribological phenomena, we unlock exciting possibilities for devel­oping novel strategies to prevent wear, reduce friction, and optimize the perfor­mance of implants and medical devices. However, ethical considerations and potential unintended consequences of targeting these biological aspects necessitate cautious and responsible research approaches. As we venture deeper into this fasci­nating realm, remember that unlocking the secrets of biotribology has the potential to revolutionize healthcare, materials science, and our understanding of life itself.