Biochemical and clinical comparisons of segmental maxillary posterior tooth distal movement between two different force magnitudes

Limsiriwong, Suchada; Khemaleelakul, Wikanda; Sirabanchongkran, Supassara; Pothacharoen, Peraphan; Kongtawelert, Prachya; Ongchai, Siriwan; Jotikasthira, Dhirawat

doi:10.1093/ejo/cjx092

Cited by 4 publications

(2 citation statements)

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“…[1234] The appropriate forces for tooth movement of human teeth reportedly range from a force as light as 18 g to one as heavy as 1,515 g.[25] This argument still exists, and no evidence-based optimal force level can be recommended in clinical orthodontics. [56] In addition to the forces optimal for the velocity of human tooth movement, the inflammatory response and pain after orthodontic force is applied which need to be studied.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of levels of Interleukin-1b, intensity of pain and tooth movement during canine retraction using different magnitudes of continuous orthodontic force

Singh

Jayaprakash

Yadav³

et al. 2019

J Family Med Prim Care

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Aim: The present study was conducted for the evaluation of Interleukin (IL)-1b levels in human gingival crevicular fluid (GCF), intensity of pain, and the amount of tooth movement measured during canine retraction using different magnitudes of continuous orthodontic force. Materials and Method: A statistically significant number of subjects were included for the study ( n = 16, 6 male subjects and 10 female subjects). The age ranged from 18 to 24 years and all were diagnosed with Class I bimaxillary protrusion. They underwent first premolar extractions prior to participating in the study. The maxillary cuspids were then retracted using a continuous force of either 50 or 150 g. This was executed using nickel–titanium coil springs on segmented archwires. The opposite counterpart, that is, mandibular cuspid was used as control. GCF was then drawn from the distal aspect of each tooth at defined time intervals. This was followed by the assessment of IL-1b concentrations, pain intensity, using the visual analogue scale (VAS), and the amount of tooth movement. ANOVA test, Friedman test, and paired t -tests were used for comparisons of IL-1b in GCF, the plaque and gingival indices, and the efficiency of tooth movement on pain perception, respectively. Results: The 150 g group showed the highest level of IL-1b concentration at 24 h from baseline and at 2 with significant differences compared with the control group ( P < 0.05). The mean VAS score of pain intensity from the 150 g force was significantly greater than from the 50 g force at 24 h ( P < 0.01). Conclusion: No significant difference in the amount of tooth movement was found between these two different magnitudes of continuous force at 2 months. A 50 g force could effectively induce tooth movement similar to 150 g with less pain and less inflammation.

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Section: Introductionmentioning

confidence: 99%

Evaluation of levels of Interleukin-1b, intensity of pain and tooth movement during canine retraction using different magnitudes of continuous orthodontic force

Singh

Jayaprakash

Yadav³

et al. 2019

J Family Med Prim Care

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“…Actualmente se implementan técnicas intrabucales que brindan mayor comodidad y aceptación por los pacientes, como son los elásticos intermaxilares, el uso de coil spring, sistemas pendulares, el Jones Jig y el Sliding Jig, entre otros (4,6). Se ha reportado que la fuerza necesaria para el movimiento distal del segmento posterior y de los caninos en cuerpo es entre 120 a 200 gr (7).…”

Section: Introductionunclassified

Comparación del movimiento del canino y molar superior utilizando elásticos de clase II con y sin Sliding Jig: un ensayo clínico aleatorizado

et al. 2019

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Introducción: para lograr relaciones caninas de clase I, se utilizan elásticos intermaxilares de clase II. El Sliding Jig es un aditamento que ejerce fuerza distal directa sobre el molar, potenciando el vector horizontal del elástico intermaxilar. Objetivo: Determinar y comparar, en un periodo de tres meses, el tipo y la cantidad de movimiento sagital y vertical del molar superior y del canino utilizando elásticos de clase II con y sin Sliding Jig. Métodos: se realizó un ensayo clínico aleatorizado, no controlado sin cegamiento; se compararon 15 hemiarcadas tratadas con Sliding Jig, con 14 hemiarcadas tratadas solo con elásticos clase II. Los movimientos fueron evaluados por un investigador calibrado (ICC:>0,8), en una Tomografía Computarizada Cone Beam (CBCT) del maxilar superior inicial (T1) y una CBCT final (T2) a los tres meses de instalada la mecánica. Resultados: las variables fueron resumidas en promedios y desviaciones estándar con un intervalo de confianza del 95 %; para la comparación de los resultados entre T1 y T2 se utilizó la prueba t-Student. Se encontró mayor distalización del molar superior y menor movimiento vertical del canino superior, en el lado de Sliding Jig comparado con el lado de solo elásticos, mostrando diferencias estadísticamente significativas (p<0,05). No se presentaron cambios significativos en los movimientos sagital y de inclinación del canino, ni en la inclinación del molar entre las dos mecánicas. Conclusiones: el Sliding Jig fue más eficiente que los elásticos de clase II solos, en la distalización de los molares superiores y en el control de la extrusión del canino.

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Review of Superelastic Differential Force Archwires for Producing Ideal Orthodontic Forces: an Advanced Technology Potentially Applicable to Orthognathic Surgery and Orthopedics

Kuntz

Vadori

Khan

2018

Curr Osteoporos Rep

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The evolution of orthodontic archwires is driven by a need to achieve low load-deflection characteristics and Nitinol is the alloy of choice. Scientific knowledge of the biological response to orthodontic forces continues to grow, but definitive guidance on optimal force levels for individual teeth is elusive. Finite element models (FEM) that take into account periodontal ligament (PDL) stresses indicate differential force archwires are needed to realize optimal treatment. However, previous wire fabrication methods, including welding of different materials and selective resistive heating, are limited by poor mechanical performance and spatial resolution. Recently, a novel laser processing technique was developed for precisely programing relative levels of stiffness in a single archwire. FEM was used to estimate the optimal force for each tooth by calculating the 3D bone-PDL surface area. There remains a general consensus that light and continuous forces are desirable for orthodontic treatment. New developments in archwire materials and technology have provided the orthodontist with a complete spectrum of load-deflection rates and differential force options to express these forces with maximized archwire economy. These technologies also appear to have application to orthopedic implant devices.

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Biochemical and clinical comparisons of segmental maxillary posterior tooth distal movement between two different force magnitudes

Abstract: The study has been registered as TCTR20170728001.

Cited by 4 publications

References 25 publications

Evaluation of levels of Interleukin-1b, intensity of pain and tooth movement during canine retraction using different magnitudes of continuous orthodontic force

Evaluation of levels of Interleukin-1b, intensity of pain and tooth movement during canine retraction using different magnitudes of continuous orthodontic force

Comparación del movimiento del canino y molar superior utilizando elásticos de clase II con y sin Sliding Jig: un ensayo clínico aleatorizado

Review of Superelastic Differential Force Archwires for Producing Ideal Orthodontic Forces: an Advanced Technology Potentially Applicable to Orthognathic Surgery and Orthopedics

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