In situ evaluation of orthodontic elastomeric chains

Baratieri, Carolina; Mattos, Cláudia Trindade; Alves, Maria da Glória; Lau, Thiago Chon Leon; Nojima, Lincoln Issamu; Souza, Margareth Maria Gomes de; Nojima, Matilde da Cunha Gonçalves

doi:10.1590/s0103-64402012000400014

Cited by 19 publications

(21 citation statements)

References 22 publications

(34 reference statements)

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“…Baratieri et al (23) (2012) tested whether intraoral exposure of elastomeric chains alters their tensile strength or not. 3 kinds of elastomeric chains, Plastic chain (PC), Memory chain (MC) and Super slick chain (SSC), were randomly placed in 3 quadrants of 13 patient and stretched for 3 weeks.…”

Section: In-vivo Effectmentioning

confidence: 99%

Application of Elastomeric Chains in Orthodontics: Past, Present and Future

2016

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Context: One of the most important aims in orthodontic treatment is to apply a light continuous force to achieve maximum effective tooth movement with minimal side effects (optimal tooth movement). It is obvious that elastomeric chains are the most popular method of space closure, but they undergo force decay during time. Force decay behavior of elastomeric chains is influenced by various factors. It is crucial for every practitioner to know about these products and factors affecting them. Evidence Acquisition: So we searched English articles published in Pubmed between 2005 -2016 with keyword "orthodontics, elastomeric chain". Results: 25 articles were selected for comprehensive reading according to the inclusion criteria. Some factors such as aging process, production technique, pre-stretching effect, design and type of chains, in-vivo effects and microbial contamination were discussed. Conclusions: By reviewing these articles, we know more about force decay pattern of elastomeric chains. Most of articles said the same force decay pattern for these elastomeric products. We know more about environmental conditions affect their features. This can help practitioners to use chains , in a better way.

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Section: In-vivo Effectmentioning

confidence: 99%

Application of Elastomeric Chains in Orthodontics: Past, Present and Future

2016

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“…When they are distended around brackets, they lose force over time. Their properties undergo changes, and one of these is force degradation when they are subjected to traction, resulting the their gradual loss of effectiveness 9 . Various studies with chain elastics have shown that these materials cannot produce constant levels of force for a long period of time, and the greatest the reduction in their force occurs in the first few hours 10,11 .…”

Section: Introductionmentioning

confidence: 99%

Influence of elastic chain in the degradation of orthodontic forces - in vitro study

Quenzer

Lucato

Vedovello

et al. 2015

Rev. odontol. UNESP

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ResumoIntrodução: Os elásticos corrente são acessórios indispensáveis no tratamento ortodôntico, e suas propriedades de grande interesse para o profissional, a fim de obter maior controle sobre os movimentos dos dentes. Objetivo: Avaliar a influência da marca comercial e comprimento da cadeia espaçadora de elásticos corrente na degradação de força. Material e método: Foram utilizadas ligaduras elásticas ortodônticas em cadeia, tipo curto, médio e longo das marcas: Rocky Mountain (RMO), TP e GAC. Os elásticos, contendo elos correspondentes a 12,5 mm, foram tensionados entre pinos de aço na máquina de ensaio universal Instron 4411 até 25 mm. O valor foi anotado. Após a aferição inicial da força, os elásticos foram fixados em placa de resina acrílica e mantidos distendidos a 25 mm. Foram inseridas em recipiente contendo água deionizada e mantidas em estufa a 37 °C. A leitura da força dos elásticos foi feita nos tempos de 24 horas, 48 horas, 7 dias, 14 dias, 21 dias e 28 dias. Os dados foram submetidos ao teste estatístico apropriado, com nível de significância de 5%. Resultado: Os elásticos TP apresentaram força significativamente maior em todos os períodos. Os elásticos GAC e RMO apresentaram forças estatisticamente semelhantes. Os elásticos TP cadeia curta e longa apresentaram força significativamente maior que os elásticos cadeia média. Para GAC e RMO os elásticos curto apresentaram força maior que os médios e este maior que os longos. Conclusão: A cadeia espaçadora e a marca comercial influenciaram nos resultados obtidos, reforçando a importância do conhecimento dos tipos de elástico.Descritores: Elastômeros; ortodontia; elasticidade. AbstractIntroduction: Elastic chains are indispensable accessories in orthodontic treatment. Changes in their properties are of great interest to professionals in order to gain greater control over tooth movements. Objective: Evaluate the influence of trademark and length of the spacer chain on force degradation of elastic. Material and method: We used the following elastic chain types: TP, Rocky Mountain (RMO) and GAC short, medium and long varieties. The elastics, which contained links corresponding to 12.5 mm, were tensioned between steel pins using Instron 4411 universal testing machine up to 25 mm. The value was recorded. After initial measurement of the force, the elastics were fixed on an acrylic resin plate and kept distended to 25 mm. They were inserted in a container with deionized water and kept in an incubator at 37º. The elastic force data was collected at time intervals of 24 hours, 48 hours, 7 days, 14 days, 21 days and 28 days. These records were subjected to an appropriate statistical test, with significance level of 5%. Result: TP elastics showed significantly higher force in all periods. RMO and GAC elastics showed similar elastic forces. Short and long TP elastics exhibited significantly higher strength than the average elastic chain. As regards GAC and RMO, short elastics showed higher than average force values, and higher values than the long type. Conclusion...

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“…The use of elastomeric chains, indicated for the correction of rotations and space closures in orthodontics, began in the 1960s [3][4][5] . Nevertheless, in spite of the important role of force transmission, they are still not considered ideal materials because they present a relevant decline in force that may cause a clinical problem, since orthodontic treatments act on the basis of the force of these accessories.…”

Section: Introductionmentioning

confidence: 99%

Do alcoholic beverages interfere in the force of orthodontic elastics?

Pithon

Barretto

Andrade

et al. 2014

Rev. odontol. UNESP

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ResumoObjetivo: Avaliar os efeitos de diferentes bebidas alcoólicas sobre a força de decaimento de elásticos ortodônticos. Material e método: Em estudo laboratorial, foram testados 7 grupos de amostra, sendo: 1 grupo controle representado pela água destilada, e 6 experimentais: 2-Wisky, 3-Conhaque, 4-Vodka, 5-Cerveja, 6-Cachaça e 7-Vinho. Utilizou-se gabaritos para realizar a submersão das cadeias nas soluções de bebidas alcoólicas durante 30 segundos, uma vez ao dia nos grupos experimentais. A medição de força foi realizada com um dinamômetro digital em seis períodos diferentes 0, 1, 7, 14, 21 e 28 dias. Resultado: Não houve diferenças significativas entre os tratamentos nos momentos baseline, 7 dias, 14 dias e 28 dias. Foram observadas diferenças estatísticas entre o grupo 7 e os demais no momento 24 horas e entre o grupo 1 e os demais no período 21 dias. No período 28 dias não houve diferenças significativas no padrão de força entre todos os grupos (p<0.05) Conclusão: As bebidas alcoolicas não exercem influência na degradação da força dos elásticos em cadeia.Descritores: Ortodontia corretiva; elastômeros; bebidas alcóolicas. AbstractObjective: To evaluate the effects of different alcoholic beverages on the decline in force of orthodontic elastics. Material and method: In a laboratory study, 6 groups of alcoholic beverages were tested. Control group (Group 1) was composed of distilled water. Experimental groups were Whisky (Group 2), Brandy (Group 3), Vodka (Group 4), Beer (Group 5), Sugar Cane Spirit/Rum (Group 6), Wine (Group 7). In the experimental groups, templates were used to enable elastics to be submerged in the alcoholic beverages for 30 seconds once a day. Force was measured with a digital dynamometer in six different time intervals: baseline, 1, 7, 14, 21 and 28 days. Result: There were no significant differences between the treatments in the time intervals: baseline, 7, 14 and 28 days. There were statistical differences between Group 7 and the others in the first 24 hours, and between Group 1 and the others after 21 days. After 28 days, there were no significant differences in the force pattern among all groups (p<0.05). Conclusion: Alcoholic beverages had no influence on the decline in force of the chain elastics.

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In situ evaluation of orthodontic elastomeric chains

Cited by 19 publications

References 22 publications

Application of Elastomeric Chains in Orthodontics: Past, Present and Future

Application of Elastomeric Chains in Orthodontics: Past, Present and Future

Influence of elastic chain in the degradation of orthodontic forces - in vitro study

Do alcoholic beverages interfere in the force of orthodontic elastics?

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