Quality of Life and Maxillary Defects: A Cross-Sectional Study / Calidad de Vida y Defectos Maxilares: Un Estudio Transversal

ABSTRACT: There has been little discussion about the quality of life of patients with maxillary defects. This article evaluates the issues related to the condition. We performed a cross-sectional study of patients with maxillary defects from referral centers in Brazil. To avoid subject burden, a questionnaire was developed, based on questions from seven instruments, which dealt with domains and conclusions that were similar to those from other studies. The predictor variable was the patients' score for each question. The outcome measure was the presence of the best-ranked items on the questionnaire as the impact factor. Six experts assessed these items and suggested which questions to include or exclude. Patients scored each item according to its occurrence and importance. Descriptive statistics and the items' rank according to the impact factor were computed to determine whether there is a comprehensive instrument available. Thirteen patients and six professionals were included in this study. The patients' age ranged from 24 to 72 years (mean (standard deviation, SD), 50.41 (14.46) years). We obtained a 60-item instrument from the selected questionnaires and subject interviews. Only 12 (37.5 %) out of the 32 best-rated items were verified by the existing instruments, two (6.25 %) were suggested by professionals and 18 (56.25 %) were conclusions from other studies. To the best of our knowledge, this is the first study to provide many features related to the quality of life in patients with maxillary defects.

RESUMEN: Existe escasa discusión en la literatura sobre la calidad de vida de los pacientes con defectos maxilares. Este artículo evalúa los problemas relacionados con esta condición. Realizamos un estudio transversal de pacientes con defectos maxilares de centros de referencia en Brasil. Se desarrolló un cuestionario basado en preguntas de siete instrumentos, que trataba sobre dominios y conclusiones similares a las de otros estudios. La variable de estimación fue la puntuación de los pacientes para cada pregunta. La medida de resultado fue la presencia de los elementos mejor clasificados en el cuestionario como factor de impacto. Seis expertos evaluaron estos ítems y sugirieron qué preguntas incluir o excluir. Los pacientes puntuaron cada ítem según su ocurrencia e importancia. Se calcularon las estadísticas descriptivas y la clasificación de los ítems según el factor de impacto, para determinar si existe un instrumento completo. Trece pacientes y seis profesionales fueron incluidos en este estudio. La edad de los pacientes osciló entre 24 y 72 años [media (desviación estándar), 50,41 (14,46) años]. Obtuvimos un instrumento de 60 ítems de los cuestionarios y entrevistas de temas seleccionados. Solo 12 (37,5 %) de los 32 ítems mejor calificados se verificaron de acuerdo a los instrumentos existentes, dos (6,25 %) fueron sugeridos por profesionales y 18 (56,25 %) fueron conclusiones de otros estudios. De acuerdo a nuestro conocimiento, este es el primer estudio que proporciona características relacionadas con la calidad de vida en pacientes con defectos maxilares.

Surface analytical studies of maxillofacial implants: influence of the preoperational treatment and the human body on the surface properties of retrieved implants.

In the present work, surface analytical investigation of unimplanted as well as retrieved pyrolytic carbon-covered carbon/carbon composite implants and Ti osteosynthesis plates is reported. The Ti plates were covered by a 200-nm-thick, anodically and thermally formed TiO2 layer. Our results suggest that although the oxide layer on the Ti miniplates remained stable during the time spent in the human body, there is still material transport between the implant and the human body. In case of the carbon/carbon composite implants, damage of the carbon fibers constituting the material was found on one side of the sterile implant and attributed to the manufacturing process. The NaCl crystals originally present on the surface of the sterile material disappeared during the time spent in the human body. As a result of the interaction with the human body, a new surface layer (mainly constituted of carbon) appeared on the implant. The results indicate that both the time spent in the human organism and the preparation of the implants before operation can have detectable effects on the investigated surface properties. Surface analytical investigations could therefore provide information not only about the biocompatibility of these materials but also about the effect of their treatment before operation.

Fibroma osificante / Ossifying fibroma

El trabajo del equipo multidisciplinario fue el camino para obtener las ventajas biológicas, psicológicas, cosméticas y funcionales. La prótesis interna fue importante para mantener la simetría de la cara; el obturador sostuvo el colgajo palatino en su lugar manteniendo su nutrición y la vitalidad del mismo. Después de este tratamiento, el paciente se recuperó totalmente y no tuvo secuelas psicológicas ya que nadie podía percibir su defecto

[Evaluation of the properties of siloxane materials and products used for endoprosthesis in reconstructive maxillofacial surgery]. / Otsenka svoistv siloksanovykh materialov i izdelii iz nikh, primeniaemykh dlia éndoprotezirovaniia v cheliustno-litsevoi khirurgii.

Methods of estimating the resistance to thread-induced breakage, static bending and puncturing are developed and recommended for including into normative and technical documentation (NTD) for maxillofacial implants with regard to the State standard 12.4.118-82. That was made for wider and more reliable estimation of properties of the materials, used in maxillofacial surgery, in addition to routine methods of estimation of physical and mechanical properties of rubber. Special NTD-recommended methods of bone endoprostheses estimation are developed.

[Evaluation of epithetic restoration]. / Erfolgsbewertung epithetischer Versorgung.

Starting from an analysis of facial prostheses applied during the years 1967-1977, the authors report of the therapeutical success. The evaluation involved not only objective criteria but also psychical problems of the face-injured patients. Priorities of stomatological efficacy are established with regard to insertion, adaptation and the postadaptive phase.