Penggunaan Modifikasi Lip Bumper Untuk Ekspansi Lateral Lengkung Gigi Atas Pada Kasus Cleft Lip dan Palate Bilateral

There is a common finding that bilateral cleft lip and palate (CLP) cases are complicated by maxillary jaw contraction in both sagital and transversal dimensions. Anterior jaw contraction is often appeared as a post-cleft lip surgical repairing defect which is done on the earlier age and as the consequence side effect is upper lip hypertonus. To improve the dental arch form and to overcome the effect of the previous condition, lip bumper on the upper jaw could be a device of choice beside the other complicated and expensive devices. Success of the lip bumper is showed on this 13 years 2 months male bilateral CLP case with contraction of posterior region (3.5 - 10.5 milimeter) and congenital missing of anterior teeth. After 10 months orthodontic treatment using the labial archwire and modified lip bumper, the maxillary arch had been improved.