An ortho-specific unit prioritises a highly collimated beam to deliver focused energy through bracket material over a distance of up to 10 mm. It may also feature specialized curing tips and faster curing modes. A restorative unit focuses more on broad, even coverage over a wider area for large fillings, where the tip is much closer to the material.

Not necessarily. Once you exceed 1,500 mW/cm², beam collimation becomes far more important than raw power. An unfocused 3,000 mW/cm² beam can deliver less effective energy to the adhesive base than a perfectly collimated 1,500 mW/cm² beam. Excess unfocused energy often just generates heat, which can be detrimental to the pulp.

With a modern, high-quality instrument delivering over 1,200 mW/cm², a 3-5 second cure on each of the mesial and distal aspects of the bracket is generally sufficient. However, you must always follow the specific instructions provided by the manufacturer of your bonding adhesive, as some formulations may require up to 10 seconds of curing time.

Yes, but only if it has superior ergonomics. For effective lingual use, the device must be lightweight and have a low-profile head with a 360-degree swivel capability. These features are critical for achieving the correct perpendicular light angle on lingual surfaces without causing patient discomfort or operator strain, ensuring a reliable bond every time.

It is best practice to test your unit's output on a weekly basis using a reliable dental radiometer. You should document the readings to track performance over time. If you notice a consistent drop of more than 20% from its baseline output, it likely indicates a problem with the battery, light guide, or internal electronics that requires professional servicing.