Opening and closure forces of sliding mechanisms of different self-ligating brackets

Gandini, Paola; Orsi, Linda; Sfondrini, Maria Francesca; Scribante, Andrea

doi:10.1590/1679-7757201300063

Cited by 5 publications

(4 citation statements)

References 23 publications

(25 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second orthodontic devices evaluated in the present report were self-ligating brackets. These stainless steel brackets are characterized by the presence of a fourth moving wall that converts the slot into a tube [11]. Self-ligating brackets are primarily designed to reduce the friction forces generated between wire and ligature during dental shifting [12].…”

Section: Discussionmentioning

confidence: 99%

“…In order to reduce chairside time and bracket/wire friction, self-ligating brackets have been introduced in orthodontic practice [8–10]. These appliances allow brackets to engage the wire by means of a sliding mechanism [11]. They present advantageous characteristics, such as efficient orthodontic mechanics, lower friction, less chair time, and good patient satisfaction [12–14].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Buccolingual Inclination Control of Upper Central Incisors of Aligners: A Comparison with Conventional and Self-Ligating Brackets

Sfondrini

Gandini

Castroflorio

et al. 2018

BioMed Research International

Self Cite

View full text Add to dashboard Cite

Objective The upper incisors torque expression is essential for the orthodontic treatment accuracy. Various orthodontic devices are claimed to have different inclination control capacity. The purpose of this retrospective study was to compare the radiographic buccolingual inclination of upper incisors in patients treated with three different orthodontic techniques. Material and Methods Conventional brackets (Victory, 3M), self-ligating appliances (Damon Q, Ormco), and aligners (Invisalign, Align Technology) were tested. Cephalometric data of 25 patients with similar skeletal and dental pretreatment parameters were collected for each technique. Position changes of upper central incisors were assessed with radiographic evaluation before and after therapy. Three different parameters were considered: 11∧SnaSnp, 11∧Ocl and I+ TVL. All variables were measured before (T0) and after (T1) treatment and their variation over treatment was assessed. Results When evaluating angular measurements, 11∧SnaSnp and 11∧Ocl angles showed the highest numeric variation with conventional brackets. Lowest values were reported with aligners. However, the differences among various techniques were not significant for both angles (P>0.05). Also I+ TVL linear value variation did not show significant differences among the different groups tested (P>0.05). Conclusion Conventional multibrackets appliance showed the highest incisal position variations over treatment, but the differences among various groups were not significantly different.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Buccolingual Inclination Control of Upper Central Incisors of Aligners: A Comparison with Conventional and Self-Ligating Brackets

Sfondrini

Gandini

Castroflorio

et al. 2018

BioMed Research International

Self Cite

View full text Add to dashboard Cite

show abstract

“…This friction must be overcome before force can be transferred from the oral device to the teeth. [1][2][3] Sliding mechanisms are now widely used in fixed appliances, 4 which means that friction from the treatment process is becoming a crucial concern that affects the performance and efficiency of appliances. 5,6 Indeed, subtle changes in brackets, archwires, and ligation methods designed to reduce friction may improve anchorage control and shorten the orthodontic treatment period.…”

Section: Introductionmentioning

confidence: 99%

Effects of nanostructured, diamondlike, carbon coating and nitrocarburizing on the frictional properties and biocompatibility of orthodontic stainless steel wires

Zhang

Guo

Wang

et al. 2016

The Angle Orthodontist

View full text Add to dashboard Cite

DLC coating and nitrocarburizing significantly improved the surface hardness of the wires, reduced friction, and exhibited good biocompatibility. The nanostructured DLC coating provided excellent corrosion resistance and good elasticity, and while the nitrocarburizing technique substantially improved frictional properties, it reduced the corrosion resistance of the stainless steel wires to a lesser extent.

show abstract

“…Different self-ligating brackets showed opening and closure forces that varied among brands as well as among maxillary and mandibular designs of the same brand. 16 However, all benefits provided by self-ligating brackets can be hindered by a damaged clip, which may affect elasticity and the magnitude of force applied on the archwire, specially regarding active/interactive self-ligating bracket systems. Few studies have been conducted in order to assess clip resistance of self-ligating brackets.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of stiffness and plastic deformation of active ceramic self-ligating bracket clips after repetitive opening and closure movements

Carneiro

Roque

Garcez

et al. 2015

Dental Press J. Orthod.

View full text Add to dashboard Cite

OBJECTIVE: The aim of this study was to assess whether repetitive opening and closure of self-ligating bracket clips can cause plastic deformation of the clip. METHODS: Three types of active/interactive ceramic self-ligating brackets (n = 20) were tested: In-Ovation C, Quicklear and WOW. A standardized controlled device performed 500 cycles of opening and closure movements of the bracket clip with proper instruments and techniques adapted as recommended by the manufacturer of each bracket type. Two tensile tests, one before and one after the repetitive cycles, were performed to assess the stiffness of the clips. To this end, a custom-made stainless steel 0.40 x 0.40 mm wire was inserted into the bracket slot and adapted to the universal testing machine (EMIC DL2000), after which measurements were recorded. On the loading portion of the loading-unloading curve of clips, the slope fitted a first-degree equation curve to determine the stiffness/deflection rate of the clip. RESULTS: The results of plastic deformation showed no significant difference among bracket types before and after the 500 cycles of opening and closure (p = 0.811). There were significant differences on stiffness among the three types of brackets (p = 0.005). The WOW bracket had higher mean values, whereas Quicklear bracket had lower values, regardless of the opening/closure cycle. CONCLUSION: Repetitive controlled opening and closure movements of the clip did not alter stiffness or cause plastic deformation.

show abstract

Opening and closure forces of sliding mechanisms of different self-ligating brackets

Cited by 5 publications

References 23 publications

Buccolingual Inclination Control of Upper Central Incisors of Aligners: A Comparison with Conventional and Self-Ligating Brackets

Buccolingual Inclination Control of Upper Central Incisors of Aligners: A Comparison with Conventional and Self-Ligating Brackets

Effects of nanostructured, diamondlike, carbon coating and nitrocarburizing on the frictional properties and biocompatibility of orthodontic stainless steel wires

Evaluation of stiffness and plastic deformation of active ceramic self-ligating bracket clips after repetitive opening and closure movements

Contact Info

Product

Resources

About