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| Author(s): |
Daniela Galvão de Almeida Prado
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Bauru. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Odontologia de Bauru (FOB/SDB) |
| Defense date: | 2011-04-25 |
| Examining board members: |
Alcione Ghedini Brasolotto;
Maria Inês Beltrati Cornacchioni Reheder;
Kelly Cristina Alves Silverio
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| Advisor: | Alcione Ghedini Brasolotto |
| Abstract | |
Individuals presented with maxillomandibular disproportions will show oral miofunctional characteristics peculiar to the type of disproportion they exhibit. Abnormalities in the dento-skeletal relation lead to aesthetic and functional losses, such as modification of the anatomical space of the oral cavity, which may trigger problems in ones voice, and in syllable production, as well as breathing damages.This study aims at understanding the respiratory and phonoarticulatory characteristics in individuals presented with dentofacial deformities, submitted to presurgical orthodontic preparation and verify whether there are differences among individuals presented with dentofacial deformities, as compared to individuals with dentofacial balance. Sixty subjects, in the age range 18 - 40 years, 30 presented with dentofacial deformities and 30 of a control group, participated in the study. Phonoarticulation assessment was performed through diadochokinesia (DDC) of emissions /pa/, /ta/, /ka/, /pataka/, /a/ and /i/; Maximum Time of Phonation (MTP) during the emission of /a/, /i/, /u/, /s/, /z/ and number counting; breathing assessment, including measurements of vital capacity and pneumophonoarticulatory coordination, through spirometry. Softwares Sound Forge (Sony), Mult Speech Main Program and Motor Speech Profile Advanced (Kay Elemetrics) and PonyFx spirometer, were utilized. Student´s t test was used for comparison between the results of individuals presented with DFD and those of individuals with dentofacial balance, by adopting the 5% significance level. Subjects presented with DFD produced a smaller number of emissions, per second, as compared to the control group, in the following DDC emissions: syllable ka for the total of individuals (p=0,049), sequence pataka for the Pattern III subgroupI (p=0,012) and for women (p=0,001). Some DDC emissions were produced with more elevated values by individuals presented with DFD, than the control group, regarding the parameters related to the irregularity of the cycles: greater intensity variation coefficient of the syllable ta for the total of individuals (p=0,016) and for the Pattern III subgroup (p=0,023); greater standard variation value of the pa syllable period for the total of subjects (p=0,046) and for the women (p=0,036); greater SD value of the ta syllable period in the Pattern III subgroup (p=0,047) and for the total of individuals (p=0,032); greater disturbance value of the pa syllable period for the total of individuals (p=0,024) and for the women (p=0,031); greater SD value of the vowel ï period for the women (p=0,027). In relation to Maximum phonation time (MPT), the individuals with DFD presented lower values than subjects with dentofacial balance in the emissions: s for the Pattern II subgroup (p=0,005) and men (p=0,019); z for Pattern II subgroup (p=0,009); counting of numbers for men (p=0,044). The measurements extracted through spirometry were similar among individuals with and without DFD. Differences were found between individuals with dentofacial deformities and individuals with dentofacial balance, as to the speed, and several stabiliity parameters of oral DDC and as to the SD of laryngeal DDC. The group of patients with DFD did not present respiratory characteristics different from those of the control group, but presented reduced MPT values in emissions which contain consonant phonemes. (AU) | |
| FAPESP's process: | 09/04621-4 - Vocal and respiratory characteristics of individuals with dentofaciais deformities |
| Grantee: | Daniela Galvão de Almeida Prado |
| Support Opportunities: | Scholarships in Brazil - Master |