Does observational study on the effectiveness of the Twin Blocks overestimate or underestimate the results? A comparative analysis of retrospective samples versus randomized controlled trial

Publication date: Available online 21 April 2021Source: Journal of the World Federation of OrthodontistsAuthor(s): Layan Mehyar, Jonathan Sandler, Badri Thiruvenkatachari

Source: Journal of the World Federation of Orthodontists - April 21, 2021 Category: Dentistry Source Type: research