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The dental manifestations of the Morquio syndrome (mucopolysaccharidosis type IV). A diagnostic aid. 1975

D G Gardner

This study describes in detail the enamel defects in a patient in whom the diagnosis of Morquio syndrome (muchopolysaccharidosis IV) has been supported both biochemically and roentgenographically. These defects are an apparently constant feature of the Morquio syndrome, and are therefore important aids to its differential diagnosis. The defects consist of abnormally thin enamel that is rough because of the numerous minute pits on its surface. The thinness of the enamel results in altered shape and discoloration of the teeth and in their being spaced. Apart from these defects, the enamel is histologically normal and is of normal hardness and radiodensity.

UI MeSH Term Description Entries
D008297 Male Males
D009085 Mucopolysaccharidosis IV Genetic disorder of mucopolysaccharide metabolism characterized by skeletal abnormalities, joint instability, development of cervical myelopathy, and excessive urinary keratan sulfate. There are two biochemically distinct forms, each due to a deficiency of a different enzyme. Eccentro-Osteochondrodysplasia,Morquio's Disease,Eccentroosteochondrodysplasia,GALNS Deficiency,Galactosamine-6-Sulfatase Deficiency,MPS IV A,MPS IV B,MPS IVA,MPS IVB,Morquio A Disease,Morquio B Syndrome,Morquio Disease,Morquio Syndrome,Morquio Syndrome A,Morquio Syndrome B,Morquio Syndrome, Type B,Morquio's Disease Type B,Morquio's Syndrome,Morquio-B Disease,Mucopolysaccharidosis 4,Mucopolysaccharidosis 4B,Mucopolysaccharidosis Type IV,Mucopolysaccharidosis Type IV A,Mucopolysaccharidosis Type IV B,Mucopolysaccharidosis Type IVA,Mucopolysaccharidosis Type IVB,Deficiencies, GALNS,Deficiencies, Galactosamine-6-Sulfatase,Deficiency, GALNS,Deficiency, Galactosamine-6-Sulfatase,Disease, Morquio,Disease, Morquio A,Disease, Morquio's,Disease, Morquio-B,Eccentro Osteochondrodysplasia,Eccentro-Osteochondrodysplasias,Eccentroosteochondrodysplasias,GALNS Deficiencies,Galactosamine 6 Sulfatase Deficiency,Galactosamine-6-Sulfatase Deficiencies,IV, Mucopolysaccharidosis Type,IVs, Mucopolysaccharidosis Type,Morquio B Disease,Morquio Syndromes,Morquios Disease,Morquios Syndrome,Mucopolysaccharidosis 4Bs,Mucopolysaccharidosis Type IVBs,Mucopolysaccharidosis Type IVs,Syndrome A, Morquio,Syndrome, Morquio,Syndrome, Morquio B,Syndrome, Morquio's,Syndromes, Morquio,Type IV, Mucopolysaccharidosis,Type IVs, Mucopolysaccharidosis
D009912 Oral Manifestations Disorders of the mouth attendant upon non-oral disease or injury. Manifestation, Oral,Manifestations, Oral,Oral Manifestation
D011859 Radiography Examination of any part of the body for diagnostic purposes by means of X-RAYS or GAMMA RAYS, recording the image on a sensitized surface (such as photographic film). Radiology, Diagnostic X-Ray,Roentgenography,X-Ray, Diagnostic,Diagnostic X-Ray,Diagnostic X-Ray Radiology,X-Ray Radiology, Diagnostic,Diagnostic X Ray,Diagnostic X Ray Radiology,Diagnostic X-Rays,Radiology, Diagnostic X Ray,X Ray Radiology, Diagnostic,X Ray, Diagnostic,X-Rays, Diagnostic
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D003744 Dental Enamel Hypoplasia An acquired or hereditary condition due to deficiency in the formation of tooth enamel (AMELOGENESIS). It is usually characterized by defective, thin, or malformed DENTAL ENAMEL. Risk factors for enamel hypoplasia include gene mutations, nutritional deficiencies, diseases, and environmental factors. Enamel Hypoplasia,Enamel Agenesis,Enamel Hypoplasia, Dental,Hypoplasia, Dental Enamel,Hypoplastic Enamel,Agenesis, Enamel,Enamel Ageneses,Enamel Hypoplasias,Enamel, Hypoplastic,Hypoplasia, Enamel
D003937 Diagnosis, Differential Determination of which one of two or more diseases or conditions a patient is suffering from by systematically comparing and contrasting results of diagnostic measures. Diagnoses, Differential,Differential Diagnoses,Differential Diagnosis
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014075 Tooth Discoloration Any change in the hue, color, or translucency of a tooth due to any cause. Restorative filling materials, drugs (both topical and systemic), pulpal necrosis, or hemorrhage may be responsible. (Jablonski, Dictionary of Dentistry, 1992, p253) Discoloration, Tooth,Discolorations, Tooth,Tooth Discolorations

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