Made available in DSpace on 2014-06-11T19:28:58Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-02-16Bitstream added on 2014-06-13T18:35:13Z : No. of bitstreams: 1 hamata_mm_me_araca.pdf: 1154614 bytes, checksum: aeddf157add6e91da7b73e35970a0b5f (MD5) / A posição de relação central (RC) para a confecção de placas oclusais é muito discutível. Dessa forma, quando existe estabilidade oclusal, a máxima intercuspidação (MI) poderia ser utilizada como ponto de referência, eliminando a necessidade de registro interoclusal. O presente trabalho tem por objetivo comparar a efetividade de placas oclusais confeccionadas a partir de modelos articulados nessas duas posições. Para isso, 20 pacientes com desordens temporomandibulares (DTM) e dor de origem muscular foram divididos em dois grupos de 10 e tratados com placas confeccionadas nas posições de MI ou RC. Estes foram avaliados por meio de exame clínico, eletrognatográfico e eletromiográfico, antes e após três meses de terapia. Os resultados permitiram verificar que os dois tipos de placa atuaram de forma semelhante. Entretanto, a confecção de placas oclusais a partir da MI mostrou ser uma técnica mais fácil e menos onerosa do que a de RC. / Centric relation (CR) position to fabricate occlusal splints is very discussable. In this way, when there is occlusal stability, intercuspal position (IP) could be used as a reference point, eliminating the interocculsal record necessity. The purpose of the present study was to compare the effectiveness of occlusal splints fabricated from models articulated in these two positions. Twenty patients with temporomandibular disorders (TMD) of myogenous origin were divided in two groups with 10 each, which were treated with splints fabricated in the CR or IP. The patients were evaluated by clinical, electrognathographic and electromyographic examinations, before and tree months after the therapy. Results showed similar levels of effectiveness of both kinds of splint. However, the fabrication of the splints from IP technique is easier and less onerous than the CR.

Este estudo teve por objetivo avaliar quantitativamente a relação cabeça da mandíbula/fossa mandibular de 80 (oitenta) indivíduos voluntários, selecionados entre os pacientes do Hospital Odontológico da Faculdade de Odontologia da Universidade Federal de Uberlândia (FOUFU) e divididos igualmente em dois grupos. O primeiro grupo foi composto de 40 indivíduos jovens, com idade variando de 18 a 25 anos, de ambos os sexos (27 ♀ e 13 ♂), subdivididos de forma igualitária, conforme a ausência ou a presença de sintomatologia de DTM. O segundo grupo, constituiu-se de 40 pacientes adultos, com idade variando de 35 a 50 anos, de ambos os sexos (30 ♀ e 10 ♂), também subdivididos igualmente, considerando a existência ou não de sintomas de DTM de acordo com o instrumento de critérios de diagnóstico para pesquisa das disfunções temporomandibulares - RDC/TMD. Cada participante foi submetido a duas tomografias, sendo uma em MI e outra em RC, por meio de tomografia computadorizada de feixe cônico (TCFC). As medidas dos espaços articulares foram realizadas em cortes coronais e sagitais das articulações temporomandibulares, e os dados coletados foram analisados estatisticamente por meio do teste U de Mann-Whitney ao nível de 5% de significância. Diferenças entre as posições maxilomandibulares de R.C e M.I, foram encontradas, porém muito pequenas, sem significância estatística em análises intragupos tanto em indidíduos jovens como adultos. Já as análises intergrupos (R.C ou M.I x assintomáticos e sintomáticos), em apenas uma medida, se observou diferenças estatísticas, porém, com um valor muito próximo ao nível de significância de 0,05. Correlações entre jovens e adultos, também em análise intergrupos, levando - se em consideração o fator idade (sintomático, assintomático, R.C e M.I x indivíduos jovens ou adultos), apresentaram diferenças estatísticas significantes em todas análises. Conclui – se em nossos resultados, que a relação cabeça da mandíbula/fossa mandibular, seja na fase jovem ou adulta, parece não ser influenciada nem pelas posições de RC e MI, nem pela presença ou ausência de sintomas de DTM. E o fator idade, mostrou – se decisivo nas discrepâncias entre R.C e M.I, comprovando que com o passar da idade, alterações significativas ocorrem nas estruturas das ATMs. / This study aimed to evaluate quantitatively the relative mandible head/ mandible fossa of 80 (80) volunteers, individuals selected among the patients of the Hospital Dentistry College of dentistry at the Federal University of Uberlândia (FOUFU) and divided equally into two groups. The first group was composed of 40 young individuals, with age ranging from 18 to 25 years old, both sexes (27 ♀ and ♂ 13), subdivided in equally, as the absence or the presence of symptoms of TMD. The second group consisted of 40 adult patients, with age ranging from 35 to 50 years of both sexes (30 ♀ and ♂ 10), also divided equally, considering the existence of symptoms of TMD according to the instrument of diagnostic criteria for temporomandibular disorders research-RDC/TMD. Each participant underwent two CT scans, one M.I e and another in RC, through cone beam computed tomography (CONE). Measurements of joint space were held in coronal and sagittal cuts of the temporomandibular joints, and the collected data were statistically analyzed through Mann-Whitney U test to the 5% level of significance. Differences between the jaw positions of C.R and MI, were found, but very small, without statistical significance in intragupos analysis in both youth and adults individuals. The analysis already intergroups (C.R or M.I x asymptomatic and symptomatic), in a measure, noted differences however, statistics with a value very close to the significance level of 0.05. Correlations between youth and adults, also under review intergroups, taking into consideration the age factor (symptomatic, asymptomatic, C.R and M.I x young or adults), showed significant statistical differences in all analyses. Concludes in our results, the relative mandible head/ mandible fossa in young or adult stage, does not seem to be influenced neither by C.R positions and MI, not by the presence or absence of symptoms of TMD. And the age factor, showed a decisive in discrepancies between C.R and M.I, proving that with the passing of the age, significant changes occur in the structures of the ATMs. / Dissertação (Mestrado)

Magister Scientiae Dentium - MSc(Dent) / It is generally agreed that the most troublesome procedure during the fabrication of complete dentures is the measurement of the Vertical Dimension at rest. The aim of this study was to test the reliability and validity of a new instrument called the Facial Anthropological Device (FAD). The measurements recorded were compared to the Willis gauge (being the gold standard) and dividers, which are mechanical aids used to quantify lower third facial height during denture construction. This thesis presents data on 35 edentulous and 35 dentate patients in the age range of 30 to 70 years, who presented at the University of the Western Cape Dental faculty.The FAD incorporates a ‘spirit‐level’ and uses more anatomical landmarks than any other measuring device noted in the literature. It measures facial landmarks in the midline and is not only used to measure the vertical dimension of the face, but with further research, may also be used in forensic studies. The Willis gauge is designed to measure the distance from the lower border of the septum of the nose to the lower border of the chin, and the distance from the outer canthus of the eye to the corner of the relaxed lip with the teeth in occlusion. The dividers measures two arbitrary points on the face.The study showed that the FAD was most similar to the Willis gauge where reliability and reproducibility was compared. There were no statistically significant differences (P > 0.05) between the two devices.The FAD has shown to be a reliable and valid instrument that could be used to measure facial vertical dimension in the edentulous as well as dentate patients, however with some modifications to its design.