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Talon cusp in a primary lateral incisor from a medieval child.

This paper describes talon cusp in an ancient skeleton and is a rare report of its occurrence in a primary lateral incisor. As well as talon cusp, the affected incisor also shows abnormal widening, probably representing a double tooth. There is also a supernumerary permanent incisor. The report shows that talon cusp existed in British populations more than 600 years before the first written description. A brief review of the literature on the occurrence of talon cusp in the primary dentition is presented.

England↗

[ROTATIO DENTIS].

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Bicuspid↗

Lobster-claw syndrome.

Lobster-Claw syndrome is a rare autosomal dominant, hand-foot malformation with Oro-dental features. This is a rare condition and from the available reports so far, cases being reported are less than 1%. Most reports have focused on the hand-foot deformity of this syndrome. This paper highlights the typical Oro-dental features associated with this syndrome such as retained deciduous teeth, hypodontia and variation in crown size, arch length and arch width.

Anodontia↗

Genetics in oral-facial growth and diseases.

Much debate has taken place over the relative importance of heredity and environment in the development of various diseases and conditions. Dental problems are not often easily categorised into either genetic or environmental, because most anomalies involve the interaction of both factors. Since many genetic disorders involve the orofacial region, the importance of the subject is paramount in dentistry to enable a proper understanding of the development of the various conditions and the treatment of patients presenting with those conditions. The incidence of newborn children with any congenital anomaly is estimated to be as high as 2 to 3 per cent, with more than half of these abnormalities, including minor manifestations, found in the head and neck region. It is therefore not unusual for dentists to be the first to recognise such conditions in their patients and be responsible for providing the necessary treatment. This paper describes many conditions, genetically or partly genetically mediated, which affect the oro-facial tissues, and offers descriptions by which the clinician can start to identify those conditions.

Environment↗

[Heredity as an etiologic factor in dentistry (oral genetics)].

The oral genetics is the part of the stomatology that is related to the questions of heredity. The oral genetics searches the typical morphological characteristics, the congenital anomalies, other pathological alterations and diseases, as well as hereditary syndromes. The author describes the genetical relevance of the two most important oral diseases: caries and parodontopathy.

Dental Caries↗