On mechanical properties of square and rectangular stainless steel wires tested in torsion

Meling, Torstein; Ødegaard, Jan; Meling, E.

doi:10.1016/s0889-5406(97)70190-2

Cited by 76 publications

(78 citation statements)

References 12 publications

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“…Changes in the critical contact angle of the archwire and bracket combinations examined were not significant (Table IV). These values were almost the same as those produced with the formula of Meling et al, 26 corroborating our methods (Table IV).…”

Section: Cad Analysissupporting

confidence: 91%

“…29,30 Therefore, we included archwires with and without beveled edges (0.04-mm radius) in the CAD model. We used our 3DMEs and the formula of Meling et al 26 (Table IV) to calculate the torsional play and found agreement with the theoretic calculations. The maximum torque angles that resulted in a critical contact angle of 0 were very similar for 3DMEs and nonbeveled-edge CAD (Table IV).…”

Section: Cad Data Analysissupporting

confidence: 60%

“…In addition, we compared the maximum torque angles that result in critical contact angles of 0 between both systems. Torsional play was calculated according to the formula of Meling et al 26 …”

Section: Methodsmentioning

confidence: 99%

“…The 3DME was validated by comparing the calculated critical contact angles and torsional play angles with those produced by a 3D computer-aided design (CAD) system and with previous calculations. 26 …”

Section: S Liding Mechanics Are Commonly Used In Ortho-mentioning

confidence: 99%

“…For bracket width, the critical contact angle was relatively small for a .017 ϫ .025-in wire in a bracket with a .018 ϫ .025-in slot (Table I) and a .021 ϫ .025-in wire in a bracket with a .022 ϫ .028-in slot (Table I). There 26 in .016 ϫ .022-in archwire in .018 ϫ .025-in bracket slot (3.5 nm bracket width) and .019 ϫ .025-in archwire in .022 ϫ .028-in bracket slot (3.5 mm bracket width). na 1 , not applicable because torque angle cannot exceed maximum torque angle.…”

Section: Effects Of Nominal Bracket-archwire Parameters As a Functionmentioning

confidence: 99%

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Three-dimensional relationship between the critical contact angle and the torque angle

Kang¹,

Baek²,

Mah³

et al. 2003

American Journal of Orthodontics and Dentofacial Orthopedics

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The purpose of this study was to analyze the relationship between the critical contact angle and the torque angle in an orthodontic bracket and archwire assembly in 3 dimensions. Three-dimensional mathematical models were created with geometric bracket-archwire parameters that included 2 slot sizes, 3 bracket widths, and 3 to 4 wire sizes. From this, 3-dimensional mathematical equations (3DMEs) for the critical contact angle and the maximum torque that result in critical contact angles of 0 were derived and calculated. To evaluate the effects of archwire-bracket parameters on critical contact angles, analysis of variance (ANOVA) was performed at the significance level of P Յ .05. For all bracket-archwire combinations, the critical contact angle decreased as bracket width, torque angle, and wire size increased. Therefore, all bracket-archwire parameters except slot height had an effect on the critical contact angle. Results of the critical contact angle produced from our 3DMEs were the same as those produced by 3D computer-aided design (SolidWorks Corp, Concord, Mass), thus confirming the validity of our derived equations. In addition, the effect of a beveled edge was investigated in some archwires. Furthermore, torsional play angles were calculated and found to be similar to those in previous reports. The results of this study provide theoretic and experimental bases for clinical orthodontic practice and indicate that torque angles should be included in the evaluation of the critical contact angle. (Am J Orthod Dentofacial Orthop 2003;123:64-73)

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Section: Cad Analysissupporting

confidence: 91%

Section: Cad Data Analysissupporting

confidence: 60%

Section: Methodsmentioning

confidence: 99%

Section: S Liding Mechanics Are Commonly Used In Ortho-mentioning

confidence: 99%

Section: Effects Of Nominal Bracket-archwire Parameters As a Functionmentioning

confidence: 99%

See 3 more Smart Citations

Three-dimensional relationship between the critical contact angle and the torque angle

Kang¹,

Baek²,

Mah³

et al. 2003

American Journal of Orthodontics and Dentofacial Orthopedics

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Drift of Dentition and Low-Friction Appliance

Jiang

Teng

et al. 2017

Physiologic Anchorage Control

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Root Resorptions in Upper First Premolars after Application of Continuous Torque Moment Intra-Individual Study

Casa

Faltin

et al. 2001

Journal of Orofacial Orthopedics / Fortschritte der Kieferortho

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The analysis in a scanning electron microscope (Jeol 6100, at 10-15 kV) revealed many resorption lacunae in the root surface, mainly on the lingual side in the apical third of the roots. Resorption processes were also observed on the buccal root surface in the cervical third. All experimental teeth showed resorption areas. Teeth which had been moved for a longer time period and with a higher magnitude of applied moments showed a higher degree of root resorption in width as well as in depth. Higher magnitude of moments produced exposure of root dentine, evidencing pronounced root resorption.

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On mechanical properties of square and rectangular stainless steel wires tested in torsion

Cited by 76 publications

References 12 publications

Three-dimensional relationship between the critical contact angle and the torque angle

Three-dimensional relationship between the critical contact angle and the torque angle

Drift of Dentition and Low-Friction Appliance

Root Resorptions in Upper First Premolars after Application of Continuous Torque Moment Intra-Individual Study

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