Changes in soft tissue profile associated with mandibular lip bumper

ABSTRACT

This study was carried out to identify the possible changes in the soft tissue profile after six months of mandibular lip bumper wear. The sample consisted of twenty subjects with class 11 division 1 malocclusion. Their age ranged from 8-12 years. The samples were divided into two equal groups. The first group received mandibular lip bumper for six months, and second group was used as a control group. It was found that in the lip bumper group the soft tissue submentale and the labrale inferius, moved significantly forward. On the other hand the soft tissue subspinale and the labrale superius moved significantly backward with a highly significant improvement in the mutual relationship of soft tissue subspinale and submentale. The soft tissue profile tended to become more convex