TITLE
Biomechanics: how to overcome the limits of aligners and continuous archwires.
DATE
26-28 September 2024
INTRO OF THE COURSE
This course includes theory-based training, clinical case presentations, typodont demonstrations, and hands-on exercises. Each lecture will be broken up into an initial theoretical introduction and a subsequent practical session.After the course participants will be able to simplify and solve complex cases applying properly orthodontic biomechanics and how to model and activate correctly auxiliary appliances for challenging orthodontic movements. We will learn how to manage properly difficult impacted canines,transpositions and trasmigrations,asymmetrical cases,canting of occlusal plane,incisors and molars intrusion without miniscrews in deep bite cases, symmetrical and asymmetrical mesialization of posterior teeth,efficient palatal or buccal root torque correction,molar uprighting with and without intrusion and how to solve other similar difficult clinical situations.
COURSE PROGRAM
Limits of aligners
Difficult movements to obtain:anterior extrusion, rotations,root torque correction, posterior bodily expansion, extraction space closure, detailing,etc.The problem of interdental spaces.Case selection.Indications of various auxiliary wires in hybrid treatment.
Fundamentals of biomechanics
Forces, vectors , moments,couples and centers of resistance .Statically determined and undetermined systems.Moment- to- force ratio and prediction of orthodontic tooth movement:occlusograms,3D VTO and virtual set-up.
Straight wire side effects
Six Burstone geometries.Partial or total bonding? Inefficiency of continuous arch wires:horizontal and vertical detailing bends in a customized archwire.
Orthodontic anchorage
How to obtain easily A,B,C anchorage. V bends.Fondamentals of skeletal anchorage:tips and tricks.
Statically determined systems
Power arms. Cantilevers.Difficult impacted canines ,transmigration and transposition treatment.Intrusion arch.Intrusion of a single tooth or a group of teeth.Correction of canted occlusal plane.Posterior intrusion and correction of skeletal open bite.
Hybrid force systems
Torque arch and torque correction of a single tooth.Reverse and reciprocal torque correction.Lingual arch and transpalatal bar:symmetrical and asymmetrical activations. Guiding arches and hinge mechanics: symmetrical and asymmetrical mesialization of posterior teeth.
Statically undetermined force systems
Alfa-beta springs. Molar uprighting with and without intrusion:crown distalization or root mesialization ? Box loops and dissociation of the force systems.Simple and double box loop for huge derotations and tipping corrections.