Bolton Analysis: Overall and Anterior Ratios, Step by Step
The Bolton analysis step by step: which teeth to measure, overall and anterior ratios and norms, the excess in millimeters, and what to do with it.
The GS Ortho blog
Practical guides for orthodontists, dentists who practice orthodontics and students: cephalometrics, diagnosis and the free tools explained step by step. More guides are available in French.
Cephalometric Tracing: A Step-by-Step Guide
How to trace a lateral cephalogram step by step: radiograph checks, calibration, the 15 landmarks and their pitfalls, reference planes, norms and common errors.
MARPE: Miniscrew-Assisted Rapid Palatal Expansion Explained
What MARPE is, how the expander is anchored, success rates by age and suture stage, activation protocols, side effects, and MARPE vs RPE vs SARPE.
What Is Mewing? What Orthodontic Evidence Actually Says
Mewing explained by orthodontic practitioners: tongue posture, orthotropics, what growth allows in children and adults, what PubMed contains, and risks.
Quad Helix Appliance: Indications, Activation and Limits
The quad helix expander for clinicians: design, dentoalveolar vs skeletal effect, indications, activation, duration, retention, side effects and RPE comparison.
Steiner Analysis in Cephalometrics: Measurements, Norms and Chevrons
The Steiner analysis step by step: landmarks, S-N reference, SNA, SNB, ANB, U1-NA and L1-NB, norms, limits of ANB, the Wits appraisal and Steiner’s chevrons.
More guides (in French)
Agénésie incisive latérale : fermer ou ouvrir l’espace ?
Agénésie de l’incisive latérale maxillaire : diagnostic, critères pour fermer (transformation canine) ou ouvrir l’espace pour un implant, Bolton.
Ancrage en orthodontie : évaluer, choisir, renforcer
Ancrage orthodontique : 3e loi de Newton, besoin chiffré par le bilan d’espace, ancrage maximum ou perte d’ancrage, TPA, arc lingual, FEO, minivis.
Asymétries en orthodontie : milieu dévié et latérodéviation
Asymétrie dentaire, squelettique ou fonctionnelle : examen des milieux en OIM et en RC, imagerie, hémi-boîtes chiffrées et critères de correction.