In the medical field, CO2 lasers are by far the most used laser. We have not had the market penetration in dentistry, that award goes to diodes. Cost may be a factor, but functionality is as well. These lasers are VERY fast (some say scary fast) and great for large incisions. Price has leveled and even come down a bit, but perhaps more importantly variable settings options increased and this allowed the machine to be more efficient and be dramatically “powered down” when desired. Too more conservative personalities, this laser can be a bit intimidating, especially if you are used to diodes because it is more of an “aim & shoot” technique (opposed to moving slow almost touching the tissue with diodes) and very fast. However, todays CO2 is a great soft tissue tool and though very fast, it is actually only a superficial ablation when used properly (like an Erbium) but with great coagulation properties. In addition, there have been recent advancements into the 9,300 wavelength with a mirrored hand piece that allows this laser to now operate on hard tissue and the early results seem quite impressive. These lasers cost anywhere from $35,000 – $100,000 depending on features, fiber quality, internal mechanism and training and support.