Speech difficulty - having a thick frenum can restrict your tongue movements and impede your speech abilities Diastema – Diastema is the spacing between your upper front tooth. A thick frenum placed lower than its usual position would lead to the massive spacing between the upper front tooth. Mouth breathing – Limited lip movement leads to an open mouth posture, leading to mouth breathing. Decreased confidence – If you or your kid has speech difficulty or huge spacing between your upper front teeth, it will impact your confidence in the public. Unstable denture – If you have a thick or highly placed frenum, it will interfere with your denture stability.