BACKGROUND Dental agenesis is the most common, often heritable, developmental anomaly in humans. Mutations in MSX1, PAX9, AXIN2 and the ectodermal dysplasia genes EDA, EDAR and EDARADD have been detected in familial severe tooth agenesis. However, until recently, in the majority of cases (∼90%) the genetic factor could not be identified, implying that other genes must be involved. Recent insigh...

The union of two different dental sprouts which can happen in any phase of dental development is commonly called fusion. This developmental anomaly may cause clinical problems including esthetic impairment, which are mainly treated by endodontic and surgical treatments. There are a few reports of conservative not invasive treatment of fused incisors teeth through restorative or prosthetic techn...

congenitally missing teeth (cmt), or as usually called hypodontia, is a highly prevalent and costly dental anomaly. besides an unfavorable appearance, patients with missing teeth may suffer from malocclusion, periodontal damage, insuf fi cient alveolar bone growth, reduced chewing ability, inarticulate pronunciation     fi elds such as orthodontics, pediatric dentistry, prosthodontics, periodon...

trauma to primary teeth can lead to devastating sequels in development of permanent successors. the disturbance may range from enamel hypoplasia and/or hypo-calcification to arrest of dental bud development. crown dilaceration of permanent teeth is one of the consequences of trauma to deciduous teeth mainly due to intrusion or avulsion. this report presents a mandibular central incisor with dil...

Abstract Introduction: dilaceration is a disturbance in tooth formation that produces a sharp bend or curve in the tooth. this anomaly has a negative effect on the treatment of root canals, orthodontics and surgery. The aim of this study was to determine the prevalence of root dilaceration using Cone Beam Tomography (CBCT). Materials and Methods:In this study, a total of 206 CBCT images(5434t...

INTRODUCTION The fusion of permanent teeth is a development anomaly of dental hard tissue. It may require a hard multidisciplinary approach with orthodontics, endodontics, surgery and prosthetics to solve aesthetic and functional problems. CASE PRESENTATION A 20-year-old Caucasian man presented to our Department to solve a dental anomaly of his upper central incisors. An oral investigation re...

Dental agenesis is a commonly encountered dental anomaly that affects more than 20% of the human population. It can be categorized as hypodontia, oligodontia, or anodontia. Oligodontia occur either an isolated finding part syndrome, and causative factor environmental genetic. : This report describes three cases isolated, non-syndromic tooth with single/ multiple missing permanent teeth. No othe...

dens invaginatus is a rare developmental anomaly of teeth with complex root canal system morphology. the present case describes a peg shape maxillary lateral incisor with dens invaginatus (oehlers type ii), necrotic pulp, and an associated large periradicular lesion. nonsurgical endodontic treatment was performed with the aim of removing the blind sac with diamond bur under the use of operating...