Abstract
Background: Regional odontodysplasia is a rare abnormality of unknown aetiology affecting dental tissues derived from the mesoderm and ectoderm. It occurs mostly in women, with no racial predilection. It is often located in the upper jaw and tends to affect a single quadrant. It can involve the temporary as well as the permanent dentition. The aetiology is unknown; however, local, systemic or genetic factors may be involved. The affected teeth are clinically hypoplastic and hypocalcified, radiographically demonstrating the appearance of “ghost teeth”.
Highlights
Regional odontodysplasia is a rare abnormality of unknown aetiology affecting dental tissues derived from the mesoderm and ectoderm
There is controversy over whether the affected teeth should be maintained for normal development of the jaws or should be extracted to avoid serious infections
Regional odontodysplasia (RO) is defined as one of the “relatively rare” anomalies of dental development that affects dental tissues derived from the mesoderm and ectoderm, such as the enamel, dentine, pulp and follicle of both dentitions [3]
Summary
Regional odontodysplasia is a rare abnormality of unknown aetiology affecting dental tissues derived from the mesoderm and ectoderm. It occurs mostly in women, with no racial predilection. It is often located in the upper jaw and tends to affect a single quadrant. According to the International Statistical Classification of Diseases and Related Health Problems (tenth revised version of 2007), regional odontodysplasia is classified as K00.4 [4]. It was initially defined by Hitchin in 1934 [5]. The term “odontodysplasia” was coined by Zegarelli EV, et al [7]; later on, Pindborg added the prefix “regional” due to its tendency to affect a single quadrant [8]
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