Diagnosis, biomechanics, clinical mechanics. Written for orthodontists who want to treat with total control of the movement.
You close the open bite, the case looks finished at debond, and months later the incisors are apart again. In most relapsed cases the diagnosis was never finished. A protocol for closure that holds.
Class II elastics get prescribed by habit: canine to molar, change at every visit. Then the bite opens or the occlusal plane tips, and nobody knows why. The elastic did exactly what its vector said it would.
You start retracting, the overjet improves — and then the case blocks. The upper incisors have tipped back, crashed into the lower incisors, and the canines aren't even corrected yet.
Borderline crowding is where most extraction mistakes happen: cases over-expanded into instability, or profiles flattened by a premolar that should have stayed. The failures start at the decision, not the mechanics.
Most of us plan from the occlusion and the tracing and hope the profile works out. These five measurements, taken before any mechanical decision, regularly overturn plans that looked correct on the models.
Every orthodontist has watched a Class II correction stall because the patient stopped wearing elastics. When the mechanics depend on cooperation, the treatment timeline belongs to the patient, not to you.
An impacted canine appears on the panoramic and the plan feels uncertain: which direction, how much force, open or closed exposure? Get the sequence wrong and the lateral incisor root pays for it.
In the mixed dentition, doing too much is as dangerous as doing too little. Guess wrong and a treatable problem becomes an extraction case, or a surgical one. Timing, and the diagnosis behind it, is what protects you.
Most torque complications start the moment a rectangular wire is engaged without anyone checking what it is about to do inside the slot. The reading takes less than a minute, once you know what to look for.
"I feel my treatments take too long." Most orthodontists blame slow biology or difficult patients. But long treatments are usually planned to be long — by a diagnosis that was never really made.
Straight-wire prescriptions don't eliminate the need to think about torque. They hide it. What real vs relative torque means clinically, and three situations where the unplanned kind causes damage.
Most Class II cases run long because of wrong sequencing, not wrong mechanics. My protocol evaluates the face first, the teeth last, and executes the biomechanics in a strict anatomical order.
