Orthomicrotribometer

Barbosa, Lucas Melo Queiroz; Silva, W.M. da; Mello, José Daniel Biasoli de

doi:10.1016/j.wear.2018.12.067

Cited by 5 publications

(5 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With respect to the raw bracket, wear tracks on the brackets are concentrated at the external edge of the slot bottom surface, as definitely shown in Fig. S5 in ESM, which effectively mimick the wear mechanism of the bracket in the patient [48]. Severe scratches are observed on the worn surface, indicating abrasive wear of the bracket.…”

Section: Tribological Behavior Of the Archwire-bracket Systemmentioning

confidence: 73%

“…The position of the wear track occasionally moves to the edge of the archwire, as shown in Fig. 5(f2), due to the misalignment of the archwire in relation to the bracket, which can hardly be eliminated in the archwirebracket contact systems [48]. However, identical friction behaviors are achieved with the wear tracks locating at different regions of the archwires, as illustrated in Fig.…”

Section: Tribological Behavior Of the Archwire-bracket Systemmentioning

confidence: 92%

See 1 more Smart Citation

Robust low friction performance of graphene sheets embedded carbon films coated orthodontic stainless steel archwires

et al. 2021

View full text Add to dashboard Cite

Reducing the friction force between the commercial archwire and bracket during the orthodontic treatment in general dental practice has attracted worldwide interest. An investigation on the friction and wear behaviors of the uncoated and carbon film coated stainless steel archwires running against stainless steel brackets was systematically conducted. The carbon films were prepared at substrate bias voltages from +5 to +50 V using an electron cyclotron resonance plasma sputtering system. With increasing substrate bias voltage, local microstructures of the carbon films evolved from amorphous carbon to graphene nanocrystallites. Both static and stable friction coefficients of the archwire-bracket contacts sliding in dry and wet (artificial saliva) conditions decreased with the deposition of carbon films on the archwires. Low friction coefficient of 0.12 was achieved in artificial saliva environment for the graphene sheets embedded carbon (GSEC) film coated archwire. Deterioration of the friction behavior of the GSEC film coated archwire occurred after immersion of the archwire in artificial saliva solution for different periods before friction test. However, moderate friction coefficient of less than 0.30 sustained after 30 days immersion periods. The low friction mechanism is clarified to be the formation of salivary adsorbed layer and graphene sheets containing tribofilm on the contact interfaces. The robust low friction and low wear performances of the GSEC film coated archwires make them good candidates for clinical orthodontic treatment applications.

show abstract

Section: Tribological Behavior Of the Archwire-bracket Systemmentioning

confidence: 73%

Section: Tribological Behavior Of the Archwire-bracket Systemmentioning

confidence: 92%

Robust low friction performance of graphene sheets embedded carbon films coated orthodontic stainless steel archwires

et al. 2021

View full text Add to dashboard Cite

show abstract

“…A complete study of the surface topography of dental implants allowed us to show how crucial macro geometry is in determining topographic parameters and quantified errors induced by measuring this important factor using flat specimens rather than actual implants [124], which led to the development of an original methodological approach for the characterization of topography and surface energy of dental implant [128]. Finally, an orthomicrotribometer was recently developed to characterize the tribology of orthodontic appliances [129].…”

Section: Brazilian Tribology: Status Quomentioning

confidence: 99%

Brazilian Tribology: origin, status quo and future perspectives

de Mello,

Costa

2023

Surf. Topogr.: Metrol. Prop.

View full text Add to dashboard Cite

This first regional issue published in STMP highlights the potential and importance of the research carried out in Latin America regarding surface engineering and tribology. In order to celebrate this important initiative, a complete historical account of Brazilian tribology is presented for the first time. It initiates with the first steps of Brazilian tribology in the 1980s, followed by the evolution and expansion of tribology research both in academic centres and industry. Focus is given to two outstanding achievements of Brazilian tribology: the fully flexible engines that run at any proportion of ethanol and gasoline and a fully innovative, completely oil-less family of hermetic compressors. The status-quo of the current research groups on tribology is described. Finally, the future trends envisaged by the Brazilian tribology community are presented.

show abstract

“…Prior to the friction test, all the archwires and brackets were sequentially rinsed with acetone, ethanol as well as deionised water by using an ultrasonic cleaner (M2800-C, Branson, China). To retain the constant and reliable tribological parameters during the friction test, the archwire was carefully aligned to the bracket slots and tensioned with a predefined value of 10 N. 32 A normal load of 1.0 N, similar to the actual force magnitude of the archwires during the orthodontic treatment, 33,34 was exerted on the archwire-bracket contact combination. The theoretical contact pressure of the archwirebracket sliding contact was calculated to be 1.2 MPa.…”

Section: Tribological Characterisationmentioning

confidence: 99%

Laser surface textures enhance the friction and wear behaviour of orthodontic brackets

Zhou,

Pan,

Luo

et al. 2023

Lubrication Science

View full text Add to dashboard Cite

Minimising the friction force of the archwire‐bracket sliding contact is crucial for achieving a high‐quality orthodontic treatment. Micro‐dimples and micro‐grooves textures were successfully produced on the two slot surfaces of the stainless steel orthodontic brackets with the laser surface texturing technology. The effect of surface texture on reducing the friction and wear behaviour of the stainless steel archwire‐bracket sliding contact combinations in artificial saliva environment was investigated. Friction coefficients of less than 0.15 and mild wear were obtained by using the three rows micro‐grooves textured bracket with a width of 60 μm and a spacing of 150 μm. The friction and wear performance was further enhanced with the addition of orthodontic wax materials. It was strongly argued that the synergetic effects of the fabricated micro‐grooves texture and the added orthodontic wax materials leading to the outstanding friction and wear behaviour of the archwire‐bracket sliding contacts.

show abstract

Orthomicrotribometer

Cited by 5 publications

References 20 publications

Robust low friction performance of graphene sheets embedded carbon films coated orthodontic stainless steel archwires

Robust low friction performance of graphene sheets embedded carbon films coated orthodontic stainless steel archwires

Brazilian Tribology: origin, status quo and future perspectives

Laser surface textures enhance the friction and wear behaviour of orthodontic brackets

Contact Info

Product

Resources

About