
In the past, it was important to target misspellings of words because search engines such as Google and Bing! did not always auto correct. So if someone was looking for "implant dentest" instead of "implant dentist",a web page with the misspelling may appear high up in search engine listings.
Note, however, that purposely misspelling text for the goal of grabbing results from these misspellings is a big mistake. Search engines are "smart" and they will not only automatically correct misspellings, but they will give results based on what the search engine thinks the user was looking for.
In the example below I typed in "Implant Dentest" and look what Google did for me:

Dr. Wank has been at the helm of Short Hills Design since he founded the company over a decade ago and is the author of the Small Business Web Design Workbook. Dr. Wank currently serves on the editorial advisory board for DentalTown magazine and writes their web development CE course.