Torque efficiency of a customized lingual appliance

Migliorati, Marco; Poggio, Daniela; Drago, Sara; Lagazzo, Alberto; Stradi, Roberto; Barberis, Fabrizio; Silvestrini-Biavati, Armando

doi:10.1007/s00056-019-00190-w

Cited by 5 publications

(1 citation statement)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recent literature underscores the ongoing evolution in torque control. Studies such as those by Migliorati et al highlight the efficiency of the ligature-archwire-slot system in lingual orthodontics for torque control, especially with specific NiTi wires [ 17 ]. Arnold et al demonstrate that a high level of torque control can be achieved with specific types of stainless steel wires in orthodontics [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

A Hypothesis Testing of Archwire Rounding for the Efficacy of Torque Springs in Orthodontics: A Finite Element Study

Balisany,

Chawshli,

Omer

2024

Cureus

View full text Add to dashboard Cite

Background: Achieving the proper buccolingual inclination of teeth is a cornerstone in orthodontic treatment, directly impacting the attainment of ideal occlusal relationships and long-term stability. A practical torque expression that moves the tooth in its proper position across all three planes is imperative to finish orthodontic cases optimally. The primary focus of this research is to investigate Burstone's hypothesis about Warren torque springs when applied to the rectangular wire. Additionally, it examines the hypothesis of rounding these wires in between the bracket wings of the target tooth to be moved. This study aims to determine whether the rounding of wires, in conjunction with the use of torque springs, influences orthodontic outcomes, addressing a notable gap in current literature and resolving controversies in orthodontic practice. Methods: A three-dimensional set of maxillary teeth was modeled. A 0.022" MiniSprint™ brackets and Stainless steel archwires of 0.019" × 0.025" and 0.017" × 0.025" (Forestadent, Pforzheim, Germany) were generated. Warren torque spring was modeled and used in the simulation on the upper right central incisor. Four case scenarios were simulated. In two scenarios, the archwires were untouched for both archwire sizes. In comparison, in the other two scenarios, each archwire size was rounded for the upper right maxillary incisor bracket area. Stresses in the Warren torque springs were calculated, the root tip displacement in the four scenarios was measured in millimeters, and both were analyzed. Results: The root tip displacement was highly affected by rounding the archwire. The increase in root tip displacement was 1538% for the Warren torque spring on 0.019" × 0.025" and 783% for 0.017" × 0.025". The amount of root tip displacement was about 18.8 mm for 0.017" × 0.025" with rounding and 12.2 mm for 0.019" × 0.025". The concentration of the stresses in the Warren torque spring was in the neck of the spring next to the coils. Conclusion: Rounding the archwires while using the Warren torque spring on a rectangular archwire will increase the efficiency of the spring and, in turn, will exhibit more torque on the tooth. Smaller dimensions of rectangular archwires will give more torque in conjunction with Warren torque springs compared to larger sizes of archwires.

show abstract

Section: Introductionmentioning

confidence: 99%

A Hypothesis Testing of Archwire Rounding for the Efficacy of Torque Springs in Orthodontics: A Finite Element Study

Balisany,

Chawshli,

Omer

2024

Cureus

View full text Add to dashboard Cite

show abstract

Tip efficiency of a customized lingual appliance: Performance of wires with two different ligatures

Drago,

Lagazzo,

De Mari

et al. 2024

European J Oral Sciences

View full text Add to dashboard Cite

Tip control in lingual orthodontics may be challenging because of the presence of a vertical slot and the particular configuration of the customized appliances. The aim of this in vitro experimental study was to investigate the role of the ligature–wire–slot system in achieving better tip control. A set of customized lingual brackets was obtained for a dedicated typodont made of extracted human teeth. A compression/traction machine tested two types of ligatures in combination with seven different wires, and the tipping angle of each configuration was derived. A statistically significant difference was found between ligatures when the complete set of data was tested. In addition, differences between ligatures were found when testing each wire separately. A statistically significant difference was found among all wires. Full‐size wires showed the smallest angles, which correspond to the greatest efficiency of the slot–archwire–ligation system in terms of tip control, and this efficiency appeared to be ligature‐related. The role played by the type of ligature was more relevant for undersized wires.

show abstract

How efficient is customized lingual orthodontics? An assessment of treatment outcome

Fontinha

Cattaneo

Cornelis

2021

Orthod Craniofacial Res

View full text Add to dashboard Cite

Objective: To assess the efficacy of lingual orthodontics by comparing setups and post-treatment casts.Setting and sample population: Thirty-two consecutive patients treated with a customized lingual orthodontic appliance were included in this retrospective study. Materials and methods:Initial casts, post-treatment casts and setups were scanned, and the digital models produced were analysed in terms of overjet; overbite; molar and canine relationships; intercanine, interpremolar and intermolar distances; upper and lower arch lengths; midline deviation; bucco-lingual angulation of all teeth and mesio-distal angulation of anterior teeth. Comparisons between setups and posttreatment casts were performed via paired t tests. Relationships between the planned and actual correction were studied using regression analysis.Results: Statistically significant differences in bucco-lingual torque between setups and post-treatment casts were found for all upper teeth, except for central incisors.In the lower jaw, statistically significant differences in bucco-lingual torque were found between setups and post-treatment casts for the lower incisors and molars.No statistically significant differences in mesio-distal angulation of anterior teeth were found between setups and post-treatment casts. Upper and lower arch widths did not vary significantly between setups and final casts, except upper inter-second premolar and intermolar distances. Conclusion:Customized lingual appliances offer efficient control of mesio-distal angulation of all anterior teeth. Significant differences in torque between setups and post-treatment casts were observed for upper lateral incisors, canines, premolars and molars, as well as lower incisors and molars. However, the torque difference was clinically significant (over three degrees) for upper second premolars and molars only.

show abstract

Torque efficiency of a customized lingual appliance

Cited by 5 publications

References 22 publications

A Hypothesis Testing of Archwire Rounding for the Efficacy of Torque Springs in Orthodontics: A Finite Element Study

A Hypothesis Testing of Archwire Rounding for the Efficacy of Torque Springs in Orthodontics: A Finite Element Study

Tip efficiency of a customized lingual appliance: Performance of wires with two different ligatures

How efficient is customized lingual orthodontics? An assessment of treatment outcome

Contact Info

Product

Resources

About