Treatment of mandibular deviation with the replacement of upper laterals with central incisors - a case report

Premature contact of teeth in posterior crossbite may be associated with facial asymmetry. To describe the surgical treatment of mandibular deviation associated with a marked facial asymmetry, and build up the two upper lateral incisors in place of the two upper central incisors. A 20 year-old boy with a unilateral posterior crossbite, noticeable facial asymmetry, and anterior crossbite is presented. He had a history of head injury in mixed dentition period. The upper central incisors were lost during trauma and the created space was replaced by the two upper lateral incisors. A removable appliance was used to correct the crossbite and it was followed by fixed appliances. Orthognathic surgery was done to complete the treatment. After that the two upper lateral incisors were built up and reshaped. Treatment resulted in a marked improvement in facial symmetry, elimination of the mandibular displacement and a stable occlusion. A patient with mandibular deviation and marked facial asymmetry was successfully treated surgically and two upper lateral incisors were built up and reshaped in place of the two upper central incisors

[ relation between maxillary constriction and hearing loss]

Maxillary constriction and high palatal vault can change the location of soft palate and may cause Eustachian tube dysfunction and even stenosis. The purpose of this study was to evaluate the relationship between maxillary constriction and conductive hearing loss. This case-control study included one hundred twenty patients whom were divided into two equal groups. The patients' ages ranged from 7 to 40 years. Hearing level was measured in all patients with a digital audiometer. The control group consisted of sixty participants with normal hearing level [under 15 db], wherease patients who had the hearing level of more than 15 db were the cases with conductive hearing loss. Then maxillary constriction was examined in both groups according to skeletal posterior cross bite and high palatal vault. These two groups were compared applying of chi-square test. This study showed that maxillary constriction was seen in 7 patients [11.7%] in control group and 19 patients [31.7%] in case group [P < 0/05]. People suffering from hearing loss were faced with maxillary constriction 3.5 times more than others. There is a significant relationship between maxillary constriction and conductive hearing loss. Thus, it is recommended that to prevent from hearing loss, maxillary constriction should be treated appropriately