Correction to: Clinical Oral Investigations.

https://doi.org/10.1007/s00784-020-03622-9

During a routine check, the Open Access coordinator noticed that article https://doi.org/10.1007/s00784-020-03622-9 was published without OA, although the author choose Open Access. Additionally, the article was approved under DEAL on 08/10/2020.

The original article has been corrected.