The dentigerous cyst is a developmental odontogenic cyst which usually occurs in the second and third decade of life. Dentigerous cyst is one of the most prevalent types of odontogenic cysts associated with partially erupted, developing, or impacted teeth. The mandibular third molars have a high predictability followed by maxillary canines. Occurrence of dentigerous cyst bilaterally is generall...

OBJECTIVES Cone-Beam Computed Tomography is an alternative imaging technique which has been recently introduced in the field of Oral & Maxillofacial Radiology. It has rapidly gained great popularity among clinicians due to its ability to detect lesions and defects of the orofacial region and provide three-dimensional information about them. In the field of Endodontics, CBCT can be a useful tool...

Ellis-van Creveld (EVC) syndrome is an autosomal recessive chondrodysplasia. The affected individuals bear a series of skeleton defects, congenital heart septum anomalies, midfacial and dental defects. Previous studies using Evc or Evc2 mutant mice have characterized the pathological mechanism leading to various types Some patients with EVC supernumerary tooth; however, it not known yet if ther...

The semidominant gene 'crooked' (Cd) in the mouse produces anomalies of the axial skeleton (resulting in a crooked tail), microphthalmia and dental abnormalities, including small molars with simplified cusp patterns that are equivalent to patterns passed through during normal morphodifferentiation. A series of embryonic litters from Cd/+ xCd/ + matings was used to investigate the embryological ...

Introduction Variations in the root and canal morphology are a common occurrence. The clinician should have a thorough knowledge of dental anatomy and its variations in order to achieve successful and predictable outcome with root canal treatment. Maxillary first permanent molars are generally considered to be three rooted, one palatal and two buccal. The additional root canal, if present, is t...

A dentigerous cyst is a benign lesion arising from the odontogenic epithelium associated with crown of an impacted tooth. They are radiolucent and unilocular, usually asymptomatic diagnosed in clinical routine or radiographic examinations. The lower third molars upper canines most affected teeth, also odontomas supernumerary teeth. slow-growing but can reach considerable dimensions, causing fac...

In the now broad field of human dental genetics, variations in the number of permanent teeth have attracted repeated attention. Indeed, of articles dealing with population frequencies, pedigree analysis, or estimates of hereditability, the greatest number have been concerned with missing or supernumerary teeth.'-4 It is not difficult to understand why such tooth number polymorphisms have preemp...

Dentigerous cysts are the second most common odontogenic cysts after radicular cysts and are most commonly seen in association with third molars and maxillary canines. Only 5% of dentigerous cysts involve supernumerary teeth, of which mesiodens is the most frequent type. This paper presents a case of dentigerous cyst associated with a mesiodens that caused a painless swelling in the upper lip o...

Supernumerary roots consist of a developmental disturbance which can occur to any teeth, and knowledge about its occurrence is particularly important for the conduction of surgical or endodontic treatment of the affected tooth. In view of this reality, an attempt was made to determine the prevalence of supernumerary roots in lower premolars. The study was carried out with 200 periapical radiogr...