RESUMEN
Immobilization protocols for head and neck radiotherapy (HNR) are needed to reduce radiation dispersion in non-tumoral tissues and to reduce damage to noble structures; however, involuntary mandibular movements require additional adaptations of thermoplastic masks. PURPOSE: Our objective was to describe an easy and low-cost disposition to help thermoplastic masks immobilize the mandible during HNR. MATERIALS AND METHODS: We created Styrofoam models to stabilize the mandible which was used to make adaptation to the thermoplastic masks. The Styrofoam model was inserted into alginate to construct a mold and a self-curing acrylic resin was added into the mold. After the acrylic resin hardened, the dispositive mandibular immobilizer was removed from the alginate mold and adjusted with Maxicut and Minicut or other drills and sandpaper. The alginate mold can be used on the same day to create backup devices. RESULTS AND CONCLUSIONS: Our device was made in a simple way, has a low cost, and helps the thermoplastic masks to immobilize the mandible, leading to a more precise individualization of head and neck immobilization that can reduce unanticipated radiation scatter and improve radiation distribution.
Asunto(s)
Neoplasias de Cabeza y Cuello , Humanos , Neoplasias de Cabeza y Cuello/radioterapia , Inmovilización/métodos , Cabeza , Poliestirenos , Planificación de la Radioterapia Asistida por Computador/métodosRESUMEN
A clorexidina é um dos agentes químicos de controle da placa bacteriana mais utilizada e de melhores resultados significativos. Seu uso na odontologia é vasto, devido a seu reconhecido poder antimicrobiano. Porém possui também alguns efeitos adversos, tais como: pigmentação das superfícies dos dentes e da língua, alterações gustativas e sensoriais, etc. Este trabalho tem como objetivo rever a literatuta sobre a clorexidina e apresentar um caso clínico de pigmentação dentária causada pelo uso do produto.