Soft tissue facial changes using Biobloc appliances: geometric morphometrics.

The aim of this study is to determine how the Biobloc appliance affects the growth of soft tissue facial components. 14 landmarks in pre-, post- and no-treatment standardized lateral photographs were digitized in 41 cases (30 cases in the pre- and post-treatment group, and 11 cases in the control group). Using finite-element analysis, it was found that soft tissue facial changes in patients treated with Biobloc appliances showed a consistent growth guidance direction of approximately 45 degrees. For the untreated group, the facial growth direction was less consistent and more vertical. It is concluded that soft tissue facial changes associated with Biobloc treatment are consistent with a more balanced facial profile.