Syndontia with talon cusp

Abstract

Teeth are specialized structural components of the craniofacial skeleton. Developmental defects occur either alone or in combination with other birth defects. Macrodontia of anterior teeth may occur as an isolated condition or as a result of fusion or gemination and can occur in the primary or permanent dentition. Fusion is more commonly seen in the anterior maxillary region. This case presentation reports a case of fusion of a supplemental tooth to one in the normal series in conjunction with a talon cusp. This condition is extremely rare and has been reported at fourth occasion in the literature. The etiology, prevalence, clinical features, and management of the aforementioned anomalies have been reviewed in detail. Early diagnosis of this condition is important because it may cause clinical problems, such as esthetic concerns and tooth crowding.

A trio of talon's cusp on a fused maxillary central incisor: A unique presentation

“…Fuzija je razvojna aberacija, koja nastaje kao posledica embriološkog spajanja klica dvaju susednih zuba i rezultira formiranjem specifičnog zuba sa proširenom kliničkom krunom, konfluentnim dentinom i odvojenim kanalima korena 1,2 . Prema Pindborgu, fuzija je spajanje gleđi i dentina dvaju ili više zuba koji se nezavisno formiraju 3 .…”

“…Prema Pindborgu, fuzija je spajanje gleđi i dentina dvaju ili više zuba koji se nezavisno formiraju 3 . Ova abnormalnost spojenih zuba takođe se naziva "dvostruki zub", "konacija", "sinodoncija" ili "zubi blizanci" 2,4 . Sa stopom prevalencije koja se kreće od 0,1% do 0,85%, čini se da se fuzija javlja pet puta češće u mlečnoj denticiji nego u trajnoj denticiji 1,5 .…”

“…Fusion is a developmental aberration following the embryological union of developing germs of two neighbouring teeth resulting in the formation of an exclusive tooth with an expanded clinical crown, confluence dentin and separate root canals 1,2 . According to Pindborg, fusion is the merging of the enamel and dentin of two or more developing teeth independently 3 .…”

“…According to Pindborg, fusion is the merging of the enamel and dentin of two or more developing teeth independently 3 . This abnormality of conjoined teeth is also referred to as "double teeth/formation", "connation", "synodontia" or "dental twinning" 2,4 . With a prevalence rate ranging from 0.1% to 0.85%, fusion appears to occur five times more commonly in deciduous dentition than in permanent dentition 1,5 .…”

Endodontic Treatment and Esthetic Management of a Geminated Central Incisor Bearing a Talon Cusp

“…The etiology of gemination is unclear but there are several hypotheses like heredity, local metabolic interferences during morphodifferentiation of the tooth germ, environmental factors such as thalidomide embryopathy, fetal alcohol exposure, or hypervitaminosis A of the pregnant mother, and trauma [ 3 ].…”