scholarly journals ‘Mouse’ loop – for frictionless mechanics

2021 ◽  
Vol 7 (2) ◽  
pp. 171-173
Author(s):  
Vighanesh Kadam ◽  
Hrushikesh Aphale ◽  
Sunil Kumar Nagmode
Keyword(s):  
Case Report ◽  
Low Friction ◽  
Space Closure ◽  
Low Load ◽  
Deflection Rate

Frictionless mechanics for extraction space closure is one of the commonly used method in orthodontic practice. The ‘Mouse” loop is a new design for efficient and low friction space closure. The 'Mouse' loop has biomechanical advantages of increased range of activation and low load deflection rate. A case report is presented for the application of the loop. In the case report, a deciduous canine was extracted and its space was closed with the help of the 'Mouse' loop. The space of the deciduous canine was closed within five months without any clinical disadvantage.

scholarly journals Open-Coil Retraction Spring

2011 ◽  
Vol 2011 ◽  
pp. 1-7
Author(s):  
Pavankumar Janardan Vibhute
Keyword(s):  
Force Level ◽  
Coil Spring ◽  
Force Magnitude ◽  
Orthodontic Space Closure ◽  
Soft Tissue Impingement ◽  
Force Decay ◽  
Space Closure ◽  
Low Load ◽  
Fail Safe ◽  
Deflection Rate

Sliding mechanic has become a popular method for space closure with developments in preadjusted edgewise appliance. Furthermore, various space closing auxiliaries have been developed and evaluated extensively for their clinical efficiency. Their effectiveness enhanced with optimum force magnitude and low-load deflection rate (LDR)/force decay. With the advent of NiTi springs in orthodontics, LDRs have been markedly reduced. For use of NiTi, clinician has to depend upon prefabricated closed coil springs. “Open Coil Retraction Spring (OCRS)” is developed utilizing NiTi open-coil spring for orthodontic space closure. This paper describes fabrication and clinical application of OCRS which have number of advantages. It sustains low LDR with optimum force magnitude. Its design is adjustable for desired length and force level. It is fail-safe for both activation and deactivation (i.e., it cannot be over activated, and decompression limit of open coil is also controlled by the operator, resp.). A possibility to offset the OCRS away from mucosa helps to reduce its soft-tissue impingement.

scholarly journals Hypodontia of mandibular incisors: considerations on the orthodontic treatment

2018 ◽  
Vol 23 (4) ◽  
pp. 79-87
Author(s):  
Renato Barcellos Rédua ◽  
Paulo César Barbosa Rédua
Keyword(s):  
Case Report ◽  
Treatment Option ◽  
Orthodontic Treatment ◽  
Composite Resin ◽  
Therapeutic Approaches ◽  
Missing Teeth ◽  
Craniofacial Malformation ◽  
Space Closure ◽  
Composite Resin Restorations

ABSTRACT Hypodontia is the most prevalent craniofacial malformation in mankind. It may present a wide variety of manifestations and, depending on the number and location of missing teeth, it may affect the esthetics, mastication, speech and occlusal balance. This paper discusses the therapeutic approaches to solve this condition, describing a case report with hypodontia of one mandibular lateral incisor, which treatment option included space closure at the region of hypodontia associated with composite resin restorations in the mandibular central incisors. The three-year follow-up after treatment revealed occlusal stability, adequate intercuspation in Class I relationship and excellent micro and macroesthetics.

scholarly journals Management of Fused Two Mandibular Incisors In The Same Quadrant With Space Closure: Case Report

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Hayder Abdallah Hashim ◽  
Mohamed Hayder A. Hashim Mohamed
Keyword(s):  
Case Report ◽  
Treatment Options ◽  
Fixed Appliance ◽  
Space Closure ◽  
Impacted Canine ◽  
The Right ◽  
Mandibular Incisors

A twelve-year-old Filipino female presented to the Orthodontic Clinic with fused mandibular central and lateral incisors and an impacted canine, all on the right side, and severe crowding in both arches.  Fixed appliance therapy was employed to align the buccally located maxillary right and left permanent canines and the mandibular right canine, and to close the space created by the extraction of the fused mandibular incisors.  Various treatment options were presented and discussed.

Space closure by miniscrew-assisted mesialization of an upper third molar and partial vestibular fixed appliance: A case report

2022 ◽  
pp. 100602
Author(s):  
Mario Palone ◽  
Sofia Casella ◽  
Andrea De Sbrocchi ◽  
Giuseppe Siciliani ◽  
Luca Lombardo
Keyword(s):  
Case Report ◽  
Third Molar ◽  
Fixed Appliance ◽  
Space Closure ◽  
Upper Third

The Effect of Third Molar Removal on the Size of Pre-molar Extraction Spaces in the Lower Arch

1980 ◽  
Vol 7 (4) ◽  
pp. 189-193 ◽  
Author(s):  
C. D. Stephens
Keyword(s):  
Case Report ◽  
Third Molar ◽  
Third Molars ◽  
Space Closure ◽  
Mandibular Third Molars ◽  
Lower Arch ◽  
Molar Extraction

A method is described for the accurate measurement of space closure at lower pre-molar extraction sites. A case report illustrates the method and gives support to the view that mandibular third molars influence the rate of mesial drift in the lower arch.

scholarly journals Effects of first- and second-order gable bends on the orthodontic load systems produced by T-loop archwires

2013 ◽  
Vol 84 (2) ◽  
pp. 350-357 ◽  
Author(s):  
Thomas R. Katona ◽  
Serkis C. Isikbay ◽  
Jie Chen
Keyword(s):  
Three Dimensional ◽  
Second Order ◽  
Lateral Incisor ◽  
Coupling Effects ◽  
Orthodontic Force ◽  
Clinical Procedures ◽  
Space Closure ◽  
Low Load ◽  
Force Components

ABSTRACT Objective: To measure the effects of first- and second-order gable bends on the forces and moments produced by a commercially available closing T-loop archwire. Materials and Methods: A dentoform-simulated space closure case was mounted on an orthodontic force tester. Sixteen gable bend combinations were placed in the archwires, which were then activated using standard clinical procedures. At each activation, the three force components and three moment components on the maxillary left lateral incisor and canine were simultaneously measured. Results: The first- and second-order gable bends showed low load coupling effects when used independently, but the load systems became unpredictable when bends were combined. Gable bends affect the magnitudes and directions of the forces and moments that are applied to teeth. The resulting moment to force ratios are sensitive to the bends. Conclusion: Gable bends alter the orthodontic load systems; however, the three-dimensional interactions produce complex and unpredictable tradeoffs.

scholarly journals In vitro evaluation of physical vapor deposition coated beta titanium orthodontic archwires

2011 ◽  
Vol 82 (1) ◽  
pp. 22-29 ◽  
Author(s):  
Vinod Krishnan ◽  
K. K. Ravikumar ◽  
K. Sukumaran ◽  
K. Jyothindra Kumar
Keyword(s):  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Testing Machine ◽  
Frictional Properties ◽  
Friction Testing ◽  
Beta Titanium ◽  
Low Load ◽  
Orthodontic Archwires ◽  
Deflection Rate

Abstract Objective: To determine in vitro the frictional properties, surface morphology, and load deflection rate with looped designs of two newly developed titanium aluminum nitride (TiAlN) and tungsten carbide/carbon (WC/C) physical vapor deposition (PVD) coated beta titanium orthodontic archwires coated with PVD. Materials and Methods: Frictional properties with Tidy's protocol, surface evaluation before and after friction testing with the help of scanning electron microscopy (ESEM), and load deflection rate with different orthodontic loops on Instron universal testing machine were evaluated. Results: The results clearly indicate reduced frictional properties for WC/C coated archwires when compared with uncoated and TiAlN coated archwires. There were no significant surface alterations upon ESEM evaluation of friction tested archwires. Low load deflection rate was exhibited by both coated archwires, the difference in load deflection rate between the coated and uncoated archwires was statistically significant. Conclusion: WC/C coated wires can be recommended for even sliding mechanics due to reduced frictional properties, better surface characteristics, and low load deflection rate compared with TiAlN coated and uncoated archwires.

scholarly journals Mind the gap: A novel technique for space closure – a case report

2019 ◽  
Vol 46 (1) ◽  
pp. 56-62
Author(s):  
Rupal Shah ◽  
Mohammad O Sharif ◽  
Daljit S Gill
Keyword(s):  
Stainless Steel ◽  
Case Report ◽  
Tooth Movement ◽  
Treatment Plan ◽  
Permanent Teeth ◽  
Partial Denture ◽  
Novel Technique ◽  
Space Closure ◽  
Fixed Orthodontic Appliance ◽  
Labial Surface

Patients presenting with severe hypodontia can be challenging to manage. They often present with significant spaces within the dental arches and the lack of permanent teeth can make anchorage control difficult. This case report demonstrates a novel technique for diastema closure in a 14-year-old with severe hypodontia. The technique allows maintenance of root parallelism during space closure in cases with reduced anchorage support. The treatment plan was agreed on a multidisciplinary hypodontia clinic and involved an upper sectional fixed orthodontic appliance to close a 7-mm midline diastema aiding subsequent partial denture provision. Treatment commenced by bonding upper primary canines and central incisors. However, attempting space closure on a 0.019 × 0.025-inch stainless-steel working archwire resulted in tipping of the incisor crowns. Two brackets were therefore placed on the labial surface of each central incisor (one incisal and one gingival). Subsequently two stainless steel working archwires and elastomeric chain were used for diastema closure. This four-bracket system provided superior control allowing space closure by bodily tooth movement. Excellent root parallelism was achieved with this innovative technique.

An incidental dense bone island: A review of potential medical and orthodontic implications of dense bone islands and case report

2020 ◽  
Vol 47 (3) ◽  
pp. 251-256 ◽  
Author(s):  
Paula Mairead Sinnott ◽  
Samantha Hodges
Keyword(s):  
Case Report ◽  
Incidental Finding ◽  
Root Tip ◽  
Alveolar Process ◽  
Lateral Aspect ◽  
Radiographic Appearance ◽  
Space Closure ◽  
Bone Island ◽  
The Right ◽  
The Impact

Dense bone islands (DBIs) are usually asymptomatic and do not require any treatment. This case report presents a DBI of an unusual presentation, which was an incidental finding on a radiograph of a 15-year-old orthodontic patient. The DBI lesion was 24 mm in size, occupying at least 50% of the alveolar process between the upper right canine and lateral incisor, extending up the lateral aspect of the anterior margin of the right nasal fossa. Generally, DBIs are 2–3 mm in size and more commonly found in the mandible in the molar and premolar region. This article further discusses the impact of DBIs on orthodontic treatment such as difficulty with achieving space closure and adequate root tip or torque. We also examine the potential medical implications of DBIs. This is clinically important, especially if multiple DBIs, or osteomas which have a similar radiographic appearance to DBIs, are found in a patient as they may be associated with adenomatous intestinal polyps, which, if not treated, have a 100% chance of becoming malignant transformation

Eruption guidance in the mixed dentition: a case report

2008 ◽  
Vol 32 (4) ◽  
pp. 331-339 ◽  
Author(s):  
Tae Weon Kim ◽  
Jae Hyun Park
Keyword(s):  
Case Report ◽  
Orthodontic Treatment ◽  
Tooth Movement ◽  
Mixed Dentition ◽  
Space Closure ◽  
Space Maintenance ◽  
Clear Aligner

Management of space problems is an important factor in the mixed dentition. The Clear Aligner can carry out minor tooth movement with no brackets bonded to the teeth. In addition, it can provide tooth movement for the following: crowding resolution, space closure, arch expansion or constriction, space maintenance or regaining, intrusion or extrusion, guidance of the eruption, and other interceptive orthodontic treatment.

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