Dental implant fractures - aetiology, treatment and case report.

PURPOSE: This study aimed to investigate the etiology, clinical manifestations, and treatment options of dental implants fractures through a literature review and to relate a clinical report. METHODS: A literature review was performed using the Medline database and this paper describes a case demonstrating the management of implant fracture. Twenty two articles were selected in the present literature review. RESULTS: Nowadays the use of dental implants to rehabilitate completely and partially edentulous patients became the best treatment option; however, this treatment is suitable to failure. The fracture of implant body is a possible complication. The fracture of implant body is a late complication and is related to the failure in implant design or material, non-passive fitting of the prosthetic crown and overloading. Clinically, prosthesis instability and spontaneous bleeding are observed. Three options of treatment have been indicated: complete removal of implant fragment, maintenance of implant fragment, and surface preparation of the fragment with insertion of a new abutment. CONCLUSION: The literature indicates the complete removal of the fragment as the best treatment option.

An alternate impression technique for ocular prostheses.

This article describes an alternative two-step ocular prosthesis impression technique that employs two materials of different consistencies. The method is intended to provide better adaptation to underlying tissues, increased mobility of the prosthesis owing to improvements in facial contours, and improved esthetics, as well as offering the patient greater comfort and security. These advantages and this prosthesis' relative ease of fabrication mean it should be considered as the first step in the management of untreated anophthalmic sockets.

Color stability of maxillofacial silicone with nanoparticle pigment and opacifier submitted to disinfection and artificial aging.

The purpose of this study was to evaluate the color stability of a maxillofacial elastomer with the addition of a nanoparticle pigment and∕or an opacifier submitted to chemical disinfection and artificial aging. Specimens were divided into four groups (n = 30): group I: silicone without pigment or opacifier, group II: ceramic powder pigment, group III: Barium sulfate (BaSO(4)) opacifier, and group IV: ceramic powder and BaSO(4) opacifier. Specimens of each group (n = 10) were disinfected with effervescent tablets, neutral soap, or 4% chlorhexidine gluconate. Disinfection was done three times a week during two months. Afterward, specimens were submitted to different periods of artificial aging. Color evaluation was initially done, after 60 days (disinfection period) and after 252, 504, and 1008 h of artificial aging with aid of a reflection spectrophotometer. Data were analyzed by three-way ANOVA and Tukey test (α = 0.05). The isolated factor disinfection did not statistically influence the values of color stability among groups. The association between pigment and BaSO(4) opacifier (GIV) was more stable in relationship to color change (△E). All values of △E obtained, independent of the disinfectant and the period of artificial aging, were considered acceptable in agreement with the norms presented in literature.

Farmacología en la tercera edad: medicamentos de uso continuo y peligros de la interacción medicamentosa / Pharmacology in the elderly: continuous use medicines and drug-drug interaction risks

Introducción: Se observó un considerable crecimientodel contingente poblacional de ancianos. Ellos son losmayores usuarios de medicamentos. Los cambios fisiológicosrelacionados con el envejecimiento pueden alterarla propiedad farmacocinética y la farmacodinamia.El cuadro de declinación cognitiva, las limitaciones físicasy las enfermedades crónicas asociadas afectan la habilidadde usar adecuadamente los medicamentos.Objetivo: Indicar las principales clases farmacológicasadministradas a pacientes geriátricos y los riesgos de lainteracción medicamentosa en base a una revisión de literatura.Conclusión: La mayor parte de los ancianoshacen uso continuo de por lo menos tres fármacos, losmás prescritos son aquellos destinados a problemas cardiovascularesy trastornos psíquicos(AU)

Introduction: It was observed a considerable growth of elderlypeople. They are who use more medicines. The physiologicalchanges associated with the age advancing can makepharmacokinetic and pharmacodynamic alterations. Thecognitive decline, physical limitations and associate chronicpathology affect the medications appropriately use ability.Aims: Based in a literature review, appoint the main pharmacologicalgroups prescribed to the elderly and the drugdruginteraction risks. Conclusion: The most of elderly usecontinually at least 3 medicines, the most prescribed are tocardiovascular and psychic diseases treatment(AU)