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Concrescence is an uncommon developmental condition of teeth where the cementum overlying the roots of at least two teeth fuse together without the involvement of dentin. [ 1 ] [ 2 ] Usually, two teeth are involved with the upper second and third molars being most commonly fused together. [ 3 ]
Mader’s “two-tooth” rule can help distinguish between tooth fusion and gemination. If the double tooth is counted as two teeth and the number of teeth in the mouth is normal, then the double tooth is likely a fused tooth. However, in some rare cases a tooth is fused to an extra tooth in which case counting the double tooth as two teeth ...
Tooth ankylosis refers to a fusion between a tooth and underlying bony support tissues. In some species, this is a normal process that occurs during the formation or maintenance of the dentition. [1] By contrast, in humans tooth ankylosis is pathological, whereby a fusion between alveolar bone and the cementum of a tooth occurs.
Occasionally, additional teeth may also arise from developmental anomalies like fusion or gemination. Fusion occurs when two tooth buds fuse together, creating a single, larger tooth. Gemination involves the incomplete division of a single tooth bud into two teeth. In some cases, these anomalies may take the form of the appearance of extra teeth.
In many cases diagnosis of Haim–Munk syndrome may be difficult in small children, as many symptoms can be confused with other skin abnormalities. Diagnosis of the disease often comes between the ages of three and five when infant teeth begin to erupt, and the inflammation and degeneration of the tissues surrounding and supporting the teeth ...
Double teeth are more common in primary teeth with a prevalence of 0.5 - 0.7%, but can occur in permanent teeth. [1] Unlike tooth fusion, tooth gemination is more common in the maxillary incisors and canines. [3] [4] [5] Like tooth gemination, tooth fusion is more common in the anterior teeth (incisors and canines). Double teeth affect both ...
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Enamel hypoplasia is a risk factor for dental caries in children including early childhood caries (ECC), which continues to be a burden for many children. This association has been identified as significant and independent, and is believed that the formation of pits and missing enamel provides a suitable local environment for adhesion and ...