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1.
Cranio ; 35(1): 19-29, 2017 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-27077270

RESUMO

OBJECTIVES: This study provides a direct comparison between two registration systems used in quantifying mandibular opening movements: two-dimensional videography and electronic axiography, which is used as a reference. METHOD: A total of 32 volunteers (age: 27.2 ± 6.8 - gender: 17 F - 15 M) participated in the study and repeated a characteristic movement, the frontal Posselt, used in the clinical evaluation of the temporomandibular joint. RESULTS: Frontal Posselt diagrams were reconstructed with the data gathered from both systems, which yielded acceptably similar data. Three commonly assessed parameters were obtained from each diagram and compared. These parameters were: maximum opening, right laterotrusion and left laterotrusion. Both descriptive statistics and the ANOVA test suggested that there was no significant difference between the estimated maximum opening parameter and the reference system (p = 0.217, 95% confidence). Laterotrusion values, on the other hand, appear to be overestimated by videography system and to show greater variability. DISCUSSION: Two-dimensional videography appears to be a suitable tool with resolution that is adequate for tracing mandibular movements - and opening values, in particular - for screening purposes, long-term observation, and as a quick check for dysfunction as far as frontal plane trajectories are concerned. CONCLUSION: Reliability and acceptable quality of 2D videography data, acquired in this work, show that it has clear advantages for its wide application in the dental office due to simplicity and low cost for maximum opening measurement given the usefulness of this parameter in the detection of temporomandibular disorders.


Assuntos
Mandíbula/diagnóstico por imagem , Mandíbula/fisiopatologia , Amplitude de Movimento Articular , Ultrassom/métodos , Gravação em Vídeo/métodos , Adulto , Feminino , Humanos , Registro da Relação Maxilomandibular/métodos , Masculino , Movimento/fisiologia , Valores de Referência , Reprodutibilidade dos Testes , Estatísticas não Paramétricas , Articulação Temporomandibular/diagnóstico por imagem , Articulação Temporomandibular/fisiopatologia , Transtornos da Articulação Temporomandibular/diagnóstico por imagem , Transtornos da Articulação Temporomandibular/fisiopatologia , Ultrassom/instrumentação , Gravação em Vídeo/instrumentação
2.
Artigo em Espanhol | LILACS | ID: lil-651887

RESUMO

La variada posición anatómica de los terceros molares mandibulares presenta importantes desafíos asociados a su profundidad y grado de inclinación. Las complicaciones más habituales del procedimiento quirúrgico convencional de extracción se relacionan con la extensa osteotomía y poca visualización del sitio quirúrgico, que pueden generar consecuencias post-quirúrgicas como inflamación, dolor, trismus, lesiones reversibles e irreversibles del nervio alveolar inferior (NAI) o nervio lingual, riesgo de fractura y formación de defectos periodontales del segundo molar. La implementación de soportes rígidos en la óptica endoscópica ha permitido utilizar esta tecnología para realizar abordajes mínimamente invasivos para remover terceros molares mediante accesos flapless con una mínima osteotomía de la zona oclusal, conservando la pared bucal y lingual a través de la visualización directa y magnificada del sitio quirúrgico, adaptable a los movimientos del paciente durante la intervención. En este reporte se presenta un nuevo procedimiento quirúrgico mínimamente invasivo a través de asistencia endoscópica para la conservación ósea en la remoción de terceros molares mandibulares con riesgo de lesión del nervio alveolar inferior.


Anatomic variability of the position of mandibular third molars represents significant challenges associated with its depth and angulation. The most common complications of conventional surgical procedure are related to extensive osteotomy and poor visualization, which can cause postsurgical effects such as inflammation, pain, trismus, reversible and irreversible lesions of the inferior alveolar nerve (IAN) or lingual nerve, fracture risk and formation of a deep periodontal defect on the distal aspect of the second molar. The implementation of rigid endoscopy in optics has allowed to use this technology via a minimally invasive approach to remove third molars by a minimally occlusal flapless ostectomy, preserving the buccal and lingual walls through direct and magnified visualization of the surgical site, adaptable to the patient’s movements during the surgery. In this report, we present a new and minimally invasive procedure through endoscopic assistance for bone conservation in the removal of third molars at risk of inferior alveolar nerve injury.


Assuntos
Feminino , Complicações Pós-Operatórias/prevenção & controle , Endoscopia/métodos , Extração Dentária/métodos , Dente Serotino/cirurgia , Dente Impactado/cirurgia , Procedimentos Cirúrgicos Minimamente Invasivos , Mandíbula/cirurgia , Osteotomia/métodos , Traumatismos do Nervo Trigêmeo/prevenção & controle
3.
Int. j. morphol ; 29(3): 694-701, Sept. 2011. ilus
Artigo em Inglês | LILACS | ID: lil-608644

RESUMO

Among structural alterations that can be a risk factor for temporomandibular joint disorder (TMD) is condylar asymmetry. In order to measure the condylar asymmetry index in panoramic x-rays quantitatively, two methods have been proposed: those of Habets and Kjellberg. The aim of this study was to determine whether the x-ray method of measuring condylar asymmetries in orthopantomographies presents a minor tendency to error due to slight displacements of the head in the horizontal plane. 30 patients between 18 and 25 years of age were assessed. Each of them underwent three panoramic x-rays in three different positions: orthoradial, and at 5 and 10 horizontal angles. Then the Habets and Kjellberg measurements were taken. Habets' technique did not show any statistically significant differences in the x-rays at 5° and 10° horizontal angles compared to the 0 angle. However, Kjellberg's technique showed statistically significant differences only at the 10° angle compared to the 0 angle. The 10° changes produced linear and ratio variations, but the indices did not vary. It was concluded that both methods provide acceptable clinical information within the limitations of these techniques to obtain data on condylar symmetries or asymmetries of the mandibular body or ramus.


Dentro de las alteraciones estructurales que pueden ser un factor de riesgo de desarrollo de un trastorno temporomandibular (TTM) se menciona a la asimetría condilar. Para realizar la medición cuantitativa del índice de asimetría condilar en radiografías panorámicas se han propuesto dos métodos, Habets y Kjellberg. El objetivo de este estudio fue determinar si el método radiográfico de medición de asimetrías condilares en ortopantomografías que presenta menor tendencia al error por leves desplazamientos de la cabeza en el plano horizontal. Se evaluaron 30 pacientes entre 18 y 25 años de edad. Cada uno de ellos se sometió a tres radiografías panorámicas en tres posiciones distintas: posición ortoradia, 5 y 10 de angulación horizontal. Posteriormente, se realizaron las mediciones de Habets y Kjellberg. La técnica de Habets no mostró diferencias estadísticamente significativas en las radiografías con 5° y 10° de angulación horizontal con respecto al ángulo de 0. Sin embargo, la técnica de Kjellberg mostró diferencias estadísticamente significativas sólo al ángulo de 10° con respecto al ángulo de 0. Las alteraciones de 10° produjeron variaciones lineales y de razones, sin embargo no variaron los índices. Se concluye que ambos métodos entregan información clínica aceptable con las limitaciones que estas técnicas tienen para obtener información sobre simetrías o asimetrías condilares de cuerpo o de rama.


Assuntos
Adulto Jovem , Côndilo Mandibular/anatomia & histologia , Côndilo Mandibular/anormalidades , Côndilo Mandibular/inervação , Côndilo Mandibular/ultraestrutura , Radiografia Panorâmica/métodos , Transtornos Craniomandibulares/congênito , Transtornos Craniomandibulares
4.
Int. j. odontostomatol. (Print) ; 1(2): 133-139, Dec. 2007. ilus, graf, tab
Artigo em Inglês | LILACS | ID: lil-533368

RESUMO

The tongue repositioning manoeuvre has been demonstrated to lead to a closed rest position of orofacial structures with increased contact of the velum with the tongue and a contact position of the tongue at the hard palate. Within the multifactorial etiology of snoring, the tongue repositioning manoeuvre was used as training method in conjunction with pressure indicating oral shields to reduce symptoms of snoring by stabilisation of the orofacial system. Bed partner ranking of 128 snorers treated consecutively showed a score before treatment of 8.9 on a 10 cm visual analogue scale. After treatment the score decrease to 4.2 (p<0.01). No significant BMI , age or gender specific influence of the outcome could beobserved. The data give evidence, that dynamic stabilisation of the orofacial system with oral shields in conjunction with the tongue repositioning manoevre is a valuable instrument to reduce the snoring problem.


La maniobra de reposicionamiento lingual ha demostrado tener ventaja para mantener cerrada el resto de estructuras orofaciales, con un aumento del contacto del paladar blando con la lengua y también en posición de contacto el paladar duro con la lengua. Dentro de la etiología multifactorial del ronquido, la maniobra de reposicionamiento lingual ha sido usada como método de entrenamiento, en conjunto con protectores orales que indican la presión para reducir los síntomas del ronquido y estabilizar el sistema orofacial. Un total de 128 pacientes roncadores tratados consecutivamente mostraron una puntuación antes del tratamiento de 8,9 a 10 cm en una escala visual análoga. Después del tratamiento, el puntaje disminuyó a 4,2 cm (p< 0,01). El índice de masa corporal no fue significativo, y no pudo ser observado si la edad o el género tenían influencia. Los datos evidenciaron que la estabilización dinámica del sistema orofacial, en conjunto con la maniobra de reposicionamiento lingual resulta ser una valiosa herramienta para reducir el problema del ronquido.


Assuntos
Humanos , Masculino , Adulto , Feminino , Terapia Combinada , Língua/fisiologia , Protetores Bucais , Ronco/terapia , Resultado do Tratamento
6.
Revista de la Asociación Odontológica Argentina;87(2): 94-98,
em Espanhol | URUGUAIODONTO | ID: odn-13288
7.
Revista de la Asociación Odontológica Argentina;86(1): 31-35,
em Espanhol | URUGUAIODONTO | ID: odn-12703
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