Solitary median maxillary central incisor in Kabuki syndrome 2 with novel missense mutation of KDM6A and ABCC8 genes.

Kabuki syndrome (KS) is an epigenetic machinery multisystem disorder with peculiar facial gestalt and dental-oral anomalies. This report describes the case of a KS patient with congenital hyperinsulinism, growth hormone deficiency and novel heterogenous missense mutations in exon 25 of the KDM6A (c.3715T>G, p.Trp1239Gly) and exon 1 of the ABCC8 (c.94A>G, p.Asn32Asp) genes. She presented with solitary median maxillary central incisor (SMMCI) and mandibular incisor hypodontia, which could be a unique dental manifestation in KS 2.

Multiple developmental dental anomalies and hypermobility type Ehlers-Danlos syndrome.

Concurrent existence of multiple developmental dental anomalies: hypodontia of permanent mandibular incisors, dentin dysplasia, transmigration, root dilaceration, ectopic eruption and delayed eruption combined with systemic abnormalities including joint hyperlaxity and skin hyperextensibility aided in diagnosis of a sporadic case of hypermobility type of Ehlers-Danlos syndrome in a Jordanian Arab male. In dental practice the presence of multiple developmental dental anomalies expressing simultaneous defects in different stages of tooth development should raise suspicion of possible of manifestation of an underlying systemic abnormality.

Combined cutaneous findings with segmental odontomaxillary dysplasia: Review of the literature and proposal of a new clinical classification.

Segmental odontomaxillary dysplasia is characterized by variability of its clinical and radiological features, and may mimic other fibro-osseous lesions. We describe the case of a segmental odontomaxillary dysplasia in a 12-year-old male comprising of dermal, gingival, bony, and dental abnormalities. He presented with left midfacial diffuse hyperkeratotic erythematous lesion, ipsilateral hypopigmentation of upper lip with indistinct vermilion border, left-sided facial swelling, unilateral maxillary enlargement and ipsilateral failure of eruption of permanent teeth. Radiographic imaging showed abnormal bony trabeculation, impacted and missing teeth. Histopathologic findings showed characteristic features of segmental odontomaxillary dysplasia. We herein report a case of this rare unusual anomaly, review the literature, and propose a new clinical classification based on the limited number of previously reported cases in an attempt to categorize the clinical variants of the condition which might be helpful when treatment options are to be considered. Clinicians should be aware of its presence when encountering patients presenting with a facial cutaneous lesion especially when it is associated with facial asymmetry and unresponsive to treatment.