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Mouthguard for Orthodontic Patient Trumpet Player

Mouthguards reduce the occurrence and the severity of damages on intraoral tissues absorbing and diffusing the energy of the impact. The brass instruments, also known as 'lip-vibrated instruments, are played by propelling air through sealed lips. The pressure applied on the lips can cause damage and bruising. The use of mouthguards can prevent those injuries producing some relief on orthodontics patients playin...

Condylar displacement on three different biotypological facial groups

This work intended to investigate centric slide (CS) on different facial skeletal groups. With this aim in mind, three different groups hyperdivergent, hipodivergent and an intermediate one were studied and compared. The tests performed allowed to identify a statistically more significant vertical displacement in hyperdivergent group while the sagittal displacement was more pronounced in hypodivergent group wit...

Force and Moment: Force Ratio of Orthodontic Loops

Lábio Leporino: do fenótipo ao alelo?

A posição do ponto centróide num tratamento ortodôntico

Introdução Segundo Houston, a posição do centróide (C), situado a meio da raiz do incisivo central maxilar, avalia-se medindo a distância entre as projecções ortogonais sobre o plano palatino do bordo incisivo mandibular (Imd) mais anterior e C (Imd-C), cuja norma é 2 mm. Este factor é considerado por alguns clínicos um elemento chave para o diag...

Estudo Laboratorial Do Comportamento Mecânico De Duas Molas

The possibility to quantify, as well as to control M/F ratios in the brackets are the key for a controlled and predictable dental movement. The present work has the purpose of determining the force systems in α (horizontal force, M/F ratios, C/D ratios) of the T and L shaped loops for the same vertical dimension (7mm), as well as for the same inter-bracket distance (13 mm). With five different pre-activat...