INTRODUCTION Hypodontia is the most frequent developmental anomaly of the orofacial complex, and its detection in prenatal ultrasound may indicate the presence of congenital malformations, genetic syndromes and chromosomal abnormalities. To date, only a few studies have evaluated the histological relationship of human tooth germs identified by two-dimensional (2D) ultrasonography. In order to a...

Dens evaginatus is an uncommon developmental anomaly of human dentition characterized by the presence of tubercle on the occlusal surface of mandibular premolars and lingual surface of anterior teeth. Due to occlusal trauma this tubercle tends to fracture thus exposing the pathway to the pulp chamber of teeth. This case report is about the presentation of dens evaginatus in mandibular premolars...

The dilated odontoma is an infrequent developmental alteration that appears in any area of the dental arches and can affect deciduous, permanent and supernumerary tooth. Dens invaginatus is a developmental anomaly resulting from invagination of a portion of crown forming within the enamel organ during odontogenesis. The most extreme form of dens invaginatus is known as dilated odontoma. The aim...

Paediatric dentistry in the current scenario is not only about teeth and gums that are visible in child's mouth, but also those structures that are hidden, difficult to identify, and often remain undiagnosed. Dentists can come across various anomalies pertaining to the crown structure during clinical practice. Supernumerary tooth is one such anomaly that is additional to the normal series and c...

BACKGROUND The formation of dental tissues is a highly delicate and complex phenomenon. Any alteration in this process leads to various dental anomalies which affect the tooth number, size, shape and structure. Supernumerary teeth are one such anomaly which affects the tooth number. Supernumerary teeth can give rise to various complications and pathologies or they may have a familial / syndromi...

A talon cusp is a rare form of developmental anomaly characterized by a well-delineated additional cusp like projection located on the surface of an anterior tooth and extends at least half the distance from the cementoenamel junction to the incisal edge. It usually occurs on palatal and lingual surface of the anterior teeth. On rare occasions the cusp may project from the facial surface or fro...

Palatogingival grooves are developmental malformations quite notorious for precipitating endodontic - periodontal lesions. Owing to their inconspicuous occurrence, funnel-shaped morphology and variable extent on tooth root, they promote adherence of plaque and bacteria to levels significant for the development of pathology. Several treatment approaches have been recognized in literature for the...

Intraosseous migration is an unusual developmental dental anomaly, which demonstrates horizontal movement of unerupted teeth only affecting the permanent dentition of the lower jaw. Mandibular second premolar is the most common impacted tooth after the third molars and maxillary canines. Distal migration of the second premolar is rare and early loss of the permanent first molar is one of the mo...

Impaction of an anterior primary tooth is rare, and most often is associated with the presence of a supernumerary tooth or odontoma (Axel 1937; Amies 1947; Amies 1952; Hitchin and White 1955; Hitchin 1962; Hitchin and Dekonor 1963; Noonan 1971). Although cases of impacted mandibular and maxillary incisors have been reported (Troxler 1973; Yokoyama 1973), most cases involve the maxillary canine ...

A young harbor seal (Phoca vitulina richardi), stranded on the coast of California, was found to have a 20-cm-diameter cranial cervical mass. Surgical excision revealed the subcutaneous mass to be covered in haired skin with multiple glabrous areas and structures resembling a jaw with tooth buds, eyelids, and a tail. The mass deformed the host pup's skull. Histologic examination revealed a comp...