Comparative study of intermaxillary relationships of manual and swallowing methods
This study compared the mandibular displacement from three methods of centric relation record using an anterior jig associated with (A) chin point guidance, (B) swallowing (control group) and (C) bimanual manipulation. Ten patients aged 25-39 years were selected if they met the following inclusion criteria: complete dentition (up to the second molars), Angle class I and absence of signs and symptoms of temporomandibular disorders and diagnostic casts showing stability in the maximum intercuspation (MI) position. Impressions of maxillary and mandibular arches were made with an irreversible hydrocolloid impression material. Master casts of each patient were obtained, mounted on a microscope table in MI as a reference position and 5 records of each method were made per patient. The mandibular casts were then repositioned with records interposed and new measurements were obtained. The difference between the two readings allowed measuring the displacement of the mandible in the anteroposterior and lateral axes. Data were analyzed statistically by ANOVA and Tukey's test at 5% significance level. There was no statistically significant differences (p>0.05) among the three methods for measuring lateral displacement (A=0.38 ± 0.26, B=0.32 ± 0.25 and C=0.32 ± 0.23). For the anteroposterior displacement (A=2.76 ± 1.43, B=2.46 ± 1.48 and C=2.97 ± 1.51), the swallowing method (B) differed significantly from the others (p<0.05), but no significant difference (p>0.05) was found between chin point guidance (A) and bimanual manipulation (C). In conclusion, the swallowing method produced smaller mandibular posterior displacement than the other methods.
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Fundação Odontológica de Ribeirão Preto
2009
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oai:scielo:S0103-644020090001000142009-05-21Comparative study of intermaxillary relationships of manual and swallowing methodsAlvarez,Márcia CristinaTurbino,Miriam LacaleBarros,Celso dePagnano,Valéria OliveiraBezzon,Osvaldo Luiz centric relation chin point guidance swallowing bimanual manipulation This study compared the mandibular displacement from three methods of centric relation record using an anterior jig associated with (A) chin point guidance, (B) swallowing (control group) and (C) bimanual manipulation. Ten patients aged 25-39 years were selected if they met the following inclusion criteria: complete dentition (up to the second molars), Angle class I and absence of signs and symptoms of temporomandibular disorders and diagnostic casts showing stability in the maximum intercuspation (MI) position. Impressions of maxillary and mandibular arches were made with an irreversible hydrocolloid impression material. Master casts of each patient were obtained, mounted on a microscope table in MI as a reference position and 5 records of each method were made per patient. The mandibular casts were then repositioned with records interposed and new measurements were obtained. The difference between the two readings allowed measuring the displacement of the mandible in the anteroposterior and lateral axes. Data were analyzed statistically by ANOVA and Tukey's test at 5% significance level. There was no statistically significant differences (p>0.05) among the three methods for measuring lateral displacement (A=0.38 ± 0.26, B=0.32 ± 0.25 and C=0.32 ± 0.23). For the anteroposterior displacement (A=2.76 ± 1.43, B=2.46 ± 1.48 and C=2.97 ± 1.51), the swallowing method (B) differed significantly from the others (p<0.05), but no significant difference (p>0.05) was found between chin point guidance (A) and bimanual manipulation (C). In conclusion, the swallowing method produced smaller mandibular posterior displacement than the other methods.info:eu-repo/semantics/openAccessFundação Odontológica de Ribeirão PretoBrazilian Dental Journal v.20 n.1 20092009-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402009000100014en10.1590/S0103-64402009000100014 |
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Alvarez,Márcia Cristina Turbino,Miriam Lacale Barros,Celso de Pagnano,Valéria Oliveira Bezzon,Osvaldo Luiz |
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Alvarez,Márcia Cristina Turbino,Miriam Lacale Barros,Celso de Pagnano,Valéria Oliveira Bezzon,Osvaldo Luiz Comparative study of intermaxillary relationships of manual and swallowing methods |
author_facet |
Alvarez,Márcia Cristina Turbino,Miriam Lacale Barros,Celso de Pagnano,Valéria Oliveira Bezzon,Osvaldo Luiz |
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Alvarez,Márcia Cristina |
title |
Comparative study of intermaxillary relationships of manual and swallowing methods |
title_short |
Comparative study of intermaxillary relationships of manual and swallowing methods |
title_full |
Comparative study of intermaxillary relationships of manual and swallowing methods |
title_fullStr |
Comparative study of intermaxillary relationships of manual and swallowing methods |
title_full_unstemmed |
Comparative study of intermaxillary relationships of manual and swallowing methods |
title_sort |
comparative study of intermaxillary relationships of manual and swallowing methods |
description |
This study compared the mandibular displacement from three methods of centric relation record using an anterior jig associated with (A) chin point guidance, (B) swallowing (control group) and (C) bimanual manipulation. Ten patients aged 25-39 years were selected if they met the following inclusion criteria: complete dentition (up to the second molars), Angle class I and absence of signs and symptoms of temporomandibular disorders and diagnostic casts showing stability in the maximum intercuspation (MI) position. Impressions of maxillary and mandibular arches were made with an irreversible hydrocolloid impression material. Master casts of each patient were obtained, mounted on a microscope table in MI as a reference position and 5 records of each method were made per patient. The mandibular casts were then repositioned with records interposed and new measurements were obtained. The difference between the two readings allowed measuring the displacement of the mandible in the anteroposterior and lateral axes. Data were analyzed statistically by ANOVA and Tukey's test at 5% significance level. There was no statistically significant differences (p>0.05) among the three methods for measuring lateral displacement (A=0.38 ± 0.26, B=0.32 ± 0.25 and C=0.32 ± 0.23). For the anteroposterior displacement (A=2.76 ± 1.43, B=2.46 ± 1.48 and C=2.97 ± 1.51), the swallowing method (B) differed significantly from the others (p<0.05), but no significant difference (p>0.05) was found between chin point guidance (A) and bimanual manipulation (C). In conclusion, the swallowing method produced smaller mandibular posterior displacement than the other methods. |
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Fundação Odontológica de Ribeirão Preto |
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2009 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402009000100014 |
work_keys_str_mv |
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