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14 September 26
Attachments in clear aligners: what they do and which types matter
Clear aligners move teeth with light, continuous forces, but some movements are hard for a smooth plastic tray to achieve on its own. That is where attachments come in: small tooth-coloured composite bumps bonded to the tooth that give the aligner a defined point to push or pull against. Without them, certain movements are slow […]
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7 September 26
Using a Bolton discrepancy to simplify extraction cases
In extraction cases, the hard part usually isn’t opening the space, it’s closing it well. And the movement that complicates most is mesialising the posterior segments to bring the canines into Class I. Before committing to that movement, it’s worth reading a figure that often rewrites the whole mechanics: the Bolton discrepancy. The Bolton discrepancy, […]
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12 August 26
Clear aligner training for orthodontists: what actually moves the needle
Most of us learned aligners the hard way: a weekend intro, a stack of tutorials, and then a lot of trial and error on real patients. It works, eventually, but it is slow and it costs refinements. The gap is rarely the software or the brand. It is the biomechanics, and biomechanics is exactly what […]
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3 August 26
Third molar anchorage for arch development, step by step
In severe crowding, the first decision isn’t how to align, it’s where the space is going to come from. Most of the time we move between two options that both carry a cost: expanding, which loses arch depth, or compressing, which proclines the incisors beyond their biological limits. There’s a third route that many cases […]
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27 July 26
Closing diastemas with aligners without losing incisor torque
Closing diastemas with aligners has a trap that shows up almost every time at the same point: once the incisors start retracting, the torque gets lost. The result is a retrusion that closes the space but leaves the incisors tipped palatally, with everything that means for aesthetics and long-term stability. Avoiding it doesn’t take extraordinary […]
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21 July 26
Closing extraction spaces with reciprocal anchorage, step by step
Closing extraction spaces with aligners is one of the scenarios where improvisation shows the most, and where the lack of a clear protocol shows even more. In Class II or Class III cases requiring full correction, where a direct staging would be complex, the key is sequencing the movement with reciprocal-anchorage logic that lets you […]
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13 July 26
The sandwich technique: solving severe crowding without stripping, extractions or TADs
When a severe crowding case comes in, the first options that come to mind are almost always the same: stripping, extractions or TADs. In some patients, whether for periodontal reasons, patient preference, or both, none of those is viable or desirable. The sandwich technique is the alternative when the crowding has to be resolved without […]
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6 July 26
Second molar in crossbite: solving it with aligners, without elastics or TADs
A second molar in crossbite is often filed under “needs elastics or miniscrews.” In many situations that assumption is reasonable, but it is not inevitable. With a sequence designed properly, and with the patient’s own occlusion used as a biomechanical resource, this case can be solved without auxiliaries. What follows is how, and above all […]
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29 June 26
Molar flaring after expansion: turn it into a resource
After a palatal expansion, buccal tipping of the molars is almost inevitable. It does not matter which device you used: when you gain several millimetres of transverse width by pushing on the molars, those teeth end up with negative torque that has to be corrected. The question is not whether it happens, but what you […]
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1 June 26
Arch Compression with Aligners: Why Sequence Beats Force
Most arch compressions that end in a refinement didn’t fail because the movement was hard. They failed because the stages were planned in the wrong order. Compressing a dental arch with clear aligners is actually highly predictable, but only when each phase is set up to make the next one possible. Here is how we […]
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25 May 26
Molar uprighting in a single aligner package
Molar uprighting produces more misfits than it should. Not because the movement is inherently difficult, but because it is almost always planned with the wrong tooth at the center of the mechanics. The molar being uprighted is not the starting point. The tooth next to it is. With the right anchorage logic, uprighting becomes a […]
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18 May 26
How to avoid interferences in your digitalizations
Achieving effective distalization in a single aligner package is possible, but it depends almost entirely on having identified and resolved interferences before starting. The most frequent one (and the most commonly overlooked) has to do with the most distal molar. If that molar represents an interference and no action is taken before digitalizing the rest […]
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