Influence of material choice on the force delivery of bimaxillary tooth positioners on canine malpositions

Lochmatter, Didier; Steineck, Markus; Brauchli, Lorenz

doi:10.1007/s00056-011-0067-7

Cited by 2 publications

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A robotic device (Hexapod Paros; MiCos GmbH, Eschbach, Germany) in combination with two 6-axes forcemoment sensors (FTS Nano 17; ATI Apex, NC, USA) was used to measure the torsional load transfer. The Hexapod Paros is capable of three-dimensional movements (three translations, three rotations) and the sensors measured the applied moments and forces (Lochmatter et al, 2012). A proclination of tooth 22 was performed by sensor 1 (S1) to read the torsional load transfer on the fixed sensor 2 (S2) attached to the tooth 21 (Figure 3).…”

Section: Methodsmentioning

confidence: 99%

In vitro comparison of the torsional load transfer of various commercially available stainless-steel wires used for fixed retainers in orthodontics

et al. 2020

View full text Add to dashboard Cite

Objective: To assess the torsional load transfer of various commercially available stainless-steel wires used for fixed retainers. Design: An in vitro study using a robotic device. Setting: Department of Pediatric Oral Health and Orthodontics, University of Basel. Methods: A 10° proclination of a maxillary lateral incisor of a 2-2 retainer was simulated with a robotic device. Eight stainless-steel wires with different shapes (round or rectangular), types (plain, braided, coaxial or chain) and dimensions were selected to measure the torsional load transfer at the adjacent central incisor. The influence of annealing was also tested. Results: The 0.016 × 0.016 and Bond-A-Braid™ wires (0.02645 × 0.01055-inch, 8-stranded, braided) showed the largest relative torsional load transfer (3.7% and 3.3%, respectively). The two multistranded wires - Triple Flex™ and Respond® - showed the smallest values of 1.0% and 0.7%, respectively. The spiral direction of these two multistranded wires affected the load transfer, the twisting showing larger torsional load transfer than the untwisting one. Conclusion: The effective torsional load transfer depends on the dimension, shape and type of a wire. Plain and braided retainers were more predictable in torsional load transfer than multistranded retainers, which may have stored more energy in the area between the composite bonding sites. This may explain the unexpected complications reported in multistranded retainers.

show abstract

Section: Methodsmentioning

confidence: 99%