The formation of mammalian dentition is one of the most remarkable processes in development and provides a powerful model for studying the epithelialmesenchymal interactions that control patterning and morphogenesis of variety of developmental processes. The tooth development involves a complex series of genetic interactions involving growth factors, transcription factors, signal receptors and ...

Tooth fusion consists of the union of crowns by the enamel and/or dentin. We describe a case of a patient who presented with a fistula in the apical portion of teeth 32 and 33. Clinically, tooth 32 showed increased crown width in relation to other teeth in the same arch. Radiographic examination evidenced fusion of tooth 32 with a possible supernumerary tooth. Cone-beam computed tomography was ...

BACKGROUND Dilacerations is a tooth deformity characterized by an angulation between crown and root causing non-eruption of the tooth. It generally occurs following trauma to the deciduous dentition apices of which lie close to the permanent tooth buds. According to Neville, maxillary and mandibular incisors contribute only approximately to 1% of the incidence of dilacerated teeth. CASE DETAI...

We explored the relationship between growth in tooth root length and the modern human extended period of childhood. Tooth roots provide support to counter chewing forces and so it is advantageous to grow roots quickly to allow teeth to erupt into function as early as possible. Growth in tooth root length occurs with a characteristic spurt or peak in rate sometime between tooth crown completion ...

S upernumerary teeth occur most commonly in the maxillary anterior region. When in the midline area, such a tooth is commonly referred to as a mesiodens with most remaining unerupted. 1, 2 The prevalence of supernumerary teeth is reported to be from I to 3%. 3‘4 Supernumerary teeth may cause or be related to over-retention of primary teeth, impaction, or ectopic eruption of nearby permanent tee...

This case report describes an external apical root resorption resulted from the unusual root morphology of the neighbouring tooth. A 28-year-old female was referred to the department of endodontics with a complaint of intense pain in her maxillary second premolar tooth. The clinical and radiographical evaluation revealed an external apical resorption in the mesial root of the maxillary first mo...

Cementoblastoma is characterized by the formation of cementum-like tissue in direct connection with the root of a tooth. It is a rare lesion constituting less than 1% of all odontogenic tumors. We report a unique case of a large cementoblastoma attached to the lateral root surface of an impacted permanent mandibular third molar in a 33 year old male patient. The association of cementoblastomas ...

Much is known about the dental development of Pan compared with that for other extant great apes. The majority of information available has concentrated either on the emergence times of teeth or on the sequence of mineralization stages of the teeth as revealed from radiographs. However, the problems of defining stages of tooth formation sufficiently accurately on radiographs are only now becomi...

OBJECTIVE To investigate the relationship between root resorption (RR) and bone turnover in two different types of tooth movement in dogs. MATERIALS AND METHODS A total of 16 dogs in two different groups were used. Tooth movement of dog premolars resulted from approximately 200 g of force. Histomorphometric analysis of premolar roots was assessed after 4 and 12 weeks of tooth movement by comp...

External root resorption may occur as a consequence of trauma, orthodontic treatment, bacterial infection or incomplete sealing of the root canal system (bacterial re-infection), and lead to crater formation on the resorbed apex. This would deform the root apex surface, and cause loss of apical constriction. Depending on the extent of the resorptive process, different treatment regimens have be...