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1.
Artículo en Inglés | IMSEAR | ID: sea-154564

RESUMEN

Maxillofacial prostheses are usually fabricated on the basis of conventional impressions and techniques. The extent to which the prosthesis reproduces normal facial morphology depends on the clinical judgment and skill of the individual fabricating the prosthesis. Recently, as a result of advances in technology, various computer-aided design and manufacturing techniques have been successfully introduced for the automated fabrication of maxillofacial prostheses. These systems are able to provide more consistently accurate reproduction of facial morphology.


Asunto(s)
Diseño Asistido por Computadora , Modelos Dentales/métodos , Prótesis Dental/tendencias , Prótesis Maxilofacial/métodos , Prótesis Maxilofacial/tendencias
2.
Artículo en Inglés | IMSEAR | ID: sea-140165

RESUMEN

Aim: The purpose of this study was comparative evaluation of sagittal condylar values of arcon and non-arcon articulators with cephalometric readings and to determine the amount of discrepancy in sagittal condylar guidance values between arcon and non-arcon articulators using same protrusive record. Materials and Methods: Twenty subjects in the age group of 19-35 years, free from temporomandibular joint dysfunction, and occlusal disharmony, with healthy dentition participated in the study. Hanau H2 (non-arcon type) and Hanau Wide-Vue (arcon type) articulators were programmed for sagittal condylar guidance values using the same protrusive record made in polysiloxane bite registration material with edge to edge degree of protrusion. The resultant values for both the articulators on either side were compared with values obtained from tracing of digital lateral cephalogram using Kodak Dental imaging Window software 6.6.3.0-C program. The tabulated data were subjected to statistical analysis, ANOVA (Fishers 'F' test) for group comparison, Tukey's HSD test for inter-comparison, student's unpaired 't' test for intra-group comparison, and level of significance (P) was calculated using the same. Results: The mean sagittal condylar guidance values of the three different groups were found to be very highly significant (P=0.001) and highly significant (P=0.002) on the right and left sides respectively. There was a very highly significant difference (P=0.001) and highly significant difference (P=0.003) between the arcon and non-arcon group on the right and left side respectively. No significant difference was found between the arcon and cephalometric group (P=0.284 right, P=0.853 left) and a statistically significant difference was found between the non-arcon and cephalometric group (P=0.049 right, P=0.015 left). On intragroup comparison there was no statistically significant difference in sagittal condylar values on the right and left sides. Conclusion: The mean difference in the sagittal condylar guidance values obtained from non-arcon and arcon articulators shows a low level of reproducibility, and no significant difference found in mean sagittal condylar values obtained from arcon articulator and cephalometric tracings indicates replication of sagittal condylar guidance value from image of articular eminence.


Asunto(s)
Adulto , Relación Céntrica , Cefalometría/métodos , Articuladores Dentales/clasificación , Materiales de Impresión Dental/química , Modelos Dentales , Oclusión Dental , Humanos , Procesamiento de Imagen Asistido por Computador/métodos , Registro de la Relación Maxilomandibular/instrumentación , Cóndilo Mandibular/fisiología , Radiografía Dental Digital/métodos , Siloxanos/química , Adulto Joven
3.
Artículo en Inglés | IMSEAR | ID: sea-140117

RESUMEN

Nasal septal perforation is a common complication of many nasal diseases such as congenital, infectious, trauma, and iatrogenic, and rarely may occur as a complication of systemic diseases, etc. The symptoms of uncorrected nasal septal perforations include crusting, epistaxis, difficulty in breathing, nasal twang in speech, postnasal discharge, foul-smelling, rhinorrhea, and hyposmia. Large nasal defects cannot be closed by hard acrylic resin nasal septal obturators because of the problems in access and path of insertion. However, obturation can be achieved by fabrication of a nasal stent that engages one of the nasal cavities. This clinical report describes prosthetic management of a patient with large nasal septal defect following septal surgery complication with an intranasal heat-processed acrylic resin stent. The stent is rendered patent for comfortable breathing, improves speech, is esthetically acceptable, dense and hygienic. These nasal stents indirectly separate the two nasal cavities with effective obturation of large nasal septal defects.


Asunto(s)
Resinas Acrílicas/química , Adulto , Materiales Biocompatibles/química , Estética , Estudios de Seguimiento , Humanos , Masculino , Cavidad Nasal/patología , Tabique Nasal/patología , Deformidades Adquiridas Nasales/rehabilitación , Diseño de Prótesis , Ajuste de Prótesis , Stents
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