This email from a friend discusses a presentation they saw that focused on mandibular advancement for correcting malocclusions. The friend critiques the presentation for overlooking important factors like tongue position and swallowing pattern. They believe the actual problem in the cases was a low resting tongue level caused by issues like tongue tie or bottle feeding rather than mandibular position. Correcting mandibular position without addressing the underlying tongue issues risks open bite recurrence and TMJ problems later in life. The friend argues the study design did not fully consider all impactful information needed to accurately reflect what was occurring.