Stability evaluation of occlusal changes obtained with Fränkel's Function Regulator-2
OBJECTIVE: To analyze the stability of occlusal changes promoted by the Frankel's Functional Regulator 2 (FR-2), in a mean period of 7.16 years post treatment. METHODS: Fifty-four pairs of models were evaluated, from 18 patients treated with FR-2. All patients had Class II, division 1 malocclus...
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doaj-4995271124464bf18abb56170836387b2020-11-24T22:21:04ZengDental Press Editora Dental Press Journal of Orthodontics 2176-94512177-67092012-12-01176103110Stability evaluation of occlusal changes obtained with Fränkel's Function Regulator-2Tânia Gnecchi TanakaFernanda AngelieriLylian Kazumi KanashiroSilvana BommaritoOBJECTIVE: To analyze the stability of occlusal changes promoted by the Frankel's Functional Regulator 2 (FR-2), in a mean period of 7.16 years post treatment. METHODS: Fifty-four pairs of models were evaluated, from 18 patients treated with FR-2. All patients had Class II, division 1 malocclusion, with initial mean age of 10.77 years and were treated with FR-2 for 18 months. The models were evaluated at the beginning of treatment (T1), at the end (T2) and after 7.16 years post treatment (T3). For occlusal evaluation, the treatment priority index (TPI) was applied on the three analyzed phases. The alterations that occurred between phases were verified with one another through paired Student's t test, with critical value of 0.05. RESULTS: A statistically significant reduction of TPI was verified, from the initial to the final phase of the treatment, reflecting the efficiency of treatment performed with FR-2, specially due to improvement in molar relation, overjet and overbite. Apart from this, the Class II correction remained stable over time. CONCLUSIONS: In this way, it is concluded that the FR-2 appliance showed to be efficient for the dental correction of Class II malocclusion, with stable occlusal results after 7.16 years post treatment.<br>OBJETIVO: analisar a estabilidade das alterações oclusais promovidas pelo aparelho Regulador de Função Fränkel-2 (RF-2), num período médio de 7,16 anos pós-tratamento. MÉTODOS: foram avaliados 54 pares de modelos, provenientes de 18 pacientes tratados por meio do aparelho RF-2. Todos os pacientes possuíam má oclusão de Classe II, divisão 1, com idade inicial média de 10,77 anos e foram tratados com o RF-2 por 18 meses. Os modelos foram avaliados no início do tratamento (T1), no final do tratamento (T2) e decorridos 7,16 anos pós-tratamento ativo (T3). Para a avaliação oclusal, aplicou-se o Índice de Prioridade de Tratamento (IPT) nas três fases analisadas. As alterações ocorridas entre as fases foram verificadas entre si por meio do teste t de Student pareado, com o valor crítico adotado de 0,05. RESULTADOS: verificou-se uma diminuição estatisticamente significativa do IPT, da fase inicial à final de tratamento, refletindo a eficácia do tratamento realizado por meio do RF-2, principalmente devido à melhora da relação molar, do trespasse horizontal e vertical. Além disso, a correção da má oclusão de Classe II obtida permaneceu estável no decorrer do tempo. CONCLUSÃO: concluiu-se que o aparelho RF-2 demonstrou ser eficaz na correção dentária da má oclusão de Classe II, com resultados oclusais estáveis decorridos 7,16 anos pós-tratamento.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512012000600021Má oclusão de Angle Classe IIAparelhos ortopédicosModelos dentáriosAngle Class II malocclusionOrthodontic appliancesDental models |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tânia Gnecchi Tanaka Fernanda Angelieri Lylian Kazumi Kanashiro Silvana Bommarito |
spellingShingle |
Tânia Gnecchi Tanaka Fernanda Angelieri Lylian Kazumi Kanashiro Silvana Bommarito Stability evaluation of occlusal changes obtained with Fränkel's Function Regulator-2 Dental Press Journal of Orthodontics Má oclusão de Angle Classe II Aparelhos ortopédicos Modelos dentários Angle Class II malocclusion Orthodontic appliances Dental models |
author_facet |
Tânia Gnecchi Tanaka Fernanda Angelieri Lylian Kazumi Kanashiro Silvana Bommarito |
author_sort |
Tânia Gnecchi Tanaka |
title |
Stability evaluation of occlusal changes obtained with Fränkel's Function Regulator-2 |
title_short |
Stability evaluation of occlusal changes obtained with Fränkel's Function Regulator-2 |
title_full |
Stability evaluation of occlusal changes obtained with Fränkel's Function Regulator-2 |
title_fullStr |
Stability evaluation of occlusal changes obtained with Fränkel's Function Regulator-2 |
title_full_unstemmed |
Stability evaluation of occlusal changes obtained with Fränkel's Function Regulator-2 |
title_sort |
stability evaluation of occlusal changes obtained with fränkel's function regulator-2 |
publisher |
Dental Press Editora |
series |
Dental Press Journal of Orthodontics |
issn |
2176-9451 2177-6709 |
publishDate |
2012-12-01 |
description |
OBJECTIVE: To analyze the stability of occlusal changes promoted by the Frankel's Functional Regulator 2 (FR-2), in a mean period of 7.16 years post treatment. METHODS: Fifty-four pairs of models were evaluated, from 18 patients treated with FR-2. All patients had Class II, division 1 malocclusion, with initial mean age of 10.77 years and were treated with FR-2 for 18 months. The models were evaluated at the beginning of treatment (T1), at the end (T2) and after 7.16 years post treatment (T3). For occlusal evaluation, the treatment priority index (TPI) was applied on the three analyzed phases. The alterations that occurred between phases were verified with one another through paired Student's t test, with critical value of 0.05. RESULTS: A statistically significant reduction of TPI was verified, from the initial to the final phase of the treatment, reflecting the efficiency of treatment performed with FR-2, specially due to improvement in molar relation, overjet and overbite. Apart from this, the Class II correction remained stable over time. CONCLUSIONS: In this way, it is concluded that the FR-2 appliance showed to be efficient for the dental correction of Class II malocclusion, with stable occlusal results after 7.16 years post treatment.<br>OBJETIVO: analisar a estabilidade das alterações oclusais promovidas pelo aparelho Regulador de Função Fränkel-2 (RF-2), num período médio de 7,16 anos pós-tratamento. MÉTODOS: foram avaliados 54 pares de modelos, provenientes de 18 pacientes tratados por meio do aparelho RF-2. Todos os pacientes possuíam má oclusão de Classe II, divisão 1, com idade inicial média de 10,77 anos e foram tratados com o RF-2 por 18 meses. Os modelos foram avaliados no início do tratamento (T1), no final do tratamento (T2) e decorridos 7,16 anos pós-tratamento ativo (T3). Para a avaliação oclusal, aplicou-se o Índice de Prioridade de Tratamento (IPT) nas três fases analisadas. As alterações ocorridas entre as fases foram verificadas entre si por meio do teste t de Student pareado, com o valor crítico adotado de 0,05. RESULTADOS: verificou-se uma diminuição estatisticamente significativa do IPT, da fase inicial à final de tratamento, refletindo a eficácia do tratamento realizado por meio do RF-2, principalmente devido à melhora da relação molar, do trespasse horizontal e vertical. Além disso, a correção da má oclusão de Classe II obtida permaneceu estável no decorrer do tempo. CONCLUSÃO: concluiu-se que o aparelho RF-2 demonstrou ser eficaz na correção dentária da má oclusão de Classe II, com resultados oclusais estáveis decorridos 7,16 anos pós-tratamento. |
topic |
Má oclusão de Angle Classe II Aparelhos ortopédicos Modelos dentários Angle Class II malocclusion Orthodontic appliances Dental models |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512012000600021 |
work_keys_str_mv |
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