Slot deformation of various stainless steel bracket due to the torque force of the beta-titanium wire

Huda, M. M.; Siregar, Erwin; Ismah, Nada

doi:10.1088/1742-6596/884/1/012105

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…This wire is composed of 78% titanium, 11.5% molybdenum, 6% zirconia, and 4.5% tin. 1,2 Beta titanium orthodontic wire has a rough surface with irregular grooves that affect plaque accumulation and increase friction. 3 Orthodontic wire alloy characteristics and surface roughness play an important role and can change the behavior of the wire.…”

Section: Introductionmentioning

confidence: 99%

Changes in the corrosion rate and microstructure of beta titanium wire using kiwi peel extract

Lubis

Natarisya²

2023

Dent. J.

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Background: Beta titanium orthodontic wire is known to have good corrosion resistance but is weak in acidic environments, which advance the corrosion rate. One natural inhibitor that can be used to decrease corrosion is kiwi peel extract, which has a high antioxidant level. Purpose: This study aims to examine the ability of the extract to decrease the corrosion rate and microstructural changes of beta titanium at an acidic pH (pH 5). Methods: The samples used were beta titanium with a diameter of 0.016 x 0.022 in and a length of 6 cm. A total of 28 samples (n=28) were divided into four groups—a control group immersed in pH 5 artificial saliva and three treatment groups immersed in kiwi peel extract at concentrations of 400, 500, and 600 ppm (n=7), respectively. The samples were immersed for seven days at 37oC in an incubator. The corrosion rate was tested using the weight-loss method and microstructure change was analyzed using a scanning electron microscope (SEM). Results: One-way ANOVA showed that there are significant differences in corrosion rates between beta titanium immersed in artificial saliva and beta titanium immersed in kiwi peel extract with p=0.01 (p<0.05). SEM analysis results showed that the group with the least surface changes was the one immersed in 400 ppm of kiwi peel extract. Conclusion: Weight-loss and SEM methods show similar results. Kiwi peel extract proved to decrease the corrosion rate and changes in the microstructure of the wire most effectively at a concentration of 400 ppm.

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Section: Introductionmentioning

confidence: 99%

Changes in the corrosion rate and microstructure of beta titanium wire using kiwi peel extract

Lubis

Natarisya²

2023

Dent. J.

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Wilson curve modification in permanent dentition: a retrospective comparison between clear aligners and continuous archwire treatment

Lione,

De Razza,

Gazzani

et al. 2024

The Angle Orthodontist

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Objectives To evaluate leveling of the Curve of Wilson (COW) by two different treatment appliances (clear aligners [CA] and continuous archwire fixed appliances [FA]) in a permanent dentition sample of patients. Materials and Methods Digital casts of 40 patients (CA group = 20 patients; FA group = 20 patients) were collected. Angular values for COW, right and left vertical height difference of lower first molars, and linear distance between lower teeth and the WALA ridge were analyzed for pre- (T1), posttreatment (T2) and on final virtual (ClinCheck) models (T2-CC) of the CA group. An unpaired t-test was used to evaluate significant intergroup differences (P < .05), while a paired t-test was used for posttreatment CA intragroup comparison. Results FA group showed better control of second molar crown positions compared to CA group (47-WALA = −0.2 ± 0.1 mm, 37-WALA = −0.6 ± 0.3 mm). No significant difference was detected for linear distance of lower first molars and the WALA ridge or for vertical height difference. CA group showed a greater reduction of distance between lower premolars and the WALA ridge (mean difference: –0.5 mm for both 45-WALA and 35-WALA; mean difference: −0.5 mm for 44-WALA, −0.6 mm for 34-WALA). Predictability for the CA group was high for every measurement (87% Right COW, 89% Left COW, 88% 46 Vertical Diff, 87% 36 Vertical Diff). Conclusions Clear aligner and continuous archwire mechanics were effective in leveling COW. FA was more effective in changing crown position of lower second molars with respect to the WALA ridge, while CA provided a greater distance reduction between lower premolars and WALA ridges compared to FA.

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Slot deformation of various stainless steel bracket due to the torque force of the beta-titanium wire

Cited by 2 publications

References 11 publications

Changes in the corrosion rate and microstructure of beta titanium wire using kiwi peel extract

Changes in the corrosion rate and microstructure of beta titanium wire using kiwi peel extract

Wilson curve modification in permanent dentition: a retrospective comparison between clear aligners and continuous archwire treatment

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