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Botox
How many times is the doctor supposed to inject you per side in one sitting for masseter reduction?
The number of injection points for neuromodulators are injector dependent, especially for off-label areas such as the masseters. 75 units per side seems like an appropriate dose within the accepted range. One aspect to consider may be the dilution ratio. For injectors who have a large dilution volume, it may be preferable to do more injection points to limit the amount of volume injected per site. Large volumes injected per area can be uncomfortable for some patients. If the dilution volume is small, then more units are delivered with a smaller volume.
Clinical Context
Masseter treatment safety depends more on where and how deep the injections are placed than on the total dose. Injections placed too high or too shallow can spread into nearby muscles used for smiling, causing temporary facial asymmetry when chewing or talking. Injections placed too deep can affect swallowing muscles. Uneven spacing across the muscle can also cause one side to slim unevenly. These are reasons an experienced injector maps out multiple points rather than a single large injection per side.
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