What are the different types of developmental dental abnormalities?
The missing teeth in the anterior maxilla are thought to cause underdevelopment of the premaxilla. Other dental abnormalities include hyperplastic upper labial frenulum, peg-shaped front teeth, and small teeth, enamel hypoplasia, conical-shaped teeth, shortened roots, taurodontism, and delayed eruption.
What are developmental disorders of the dentition?
Dental abnormalities include missing teeth, extra teeth, enamel dysplasia, and malocclusion [Al‐Qattan, 1998; Toriello and Franco, 2007]. The lower lateral incisors are missing in 50% of individuals, and this is associated with fibrous bands in the region.
What is tooth abnormality?
An anomaly is defined as something that is noticeably different or that deviates from the ordinary or normal. Dental anomalies are deviations of dental tissue origin and therefore are derived from the dental tissues enamel, dentin, or cementum. Anomalies can be extreme variations or just slight deviations.
What can cause dental anomalies?
Dental anomalies are caused by complex multifactorial interactions between genetic, epigenetic, and environmental factors during the long process of dental development. [16] It explains this phenomenon, as different races carried different genetic coding.
What are the stages of tooth development?
Tooth development is commonly divided into the following stages: the initiation stage, the bud stage, the cap stage, the bell stage, and finally maturation.
What are three anomalies that affect the number of teeth?
Numerical anomalies include supernumerary teeth or hyperdontia, and, hypodontia or congenitally missing teeth. [2] A supernumerary tooth is one that is present in addition to the normal number of teeth.
What is the first stage of tooth development called?
The odontogenesis of the primary dentition begins in the embryonic period, between the sixth and the seventh week of prenatal development. The first stage of tooth development is initiation, where ectoderm induces the mesenchymal tissue in order to initiate the process.
What is the second stage of tooth development?
2. Cap Stage. During this stage, cells begin to shape the outside layer of the tooth, forming a cap that sits on the rest of the tooth bud. This cap is called the enamel organ because it will later form the cells that produce enamel.
What are five anomalies that affect the shape of teeth?
Anomalies of shape include dens invaginatus (DI), talon cusp, dens evaginatus, gemination, fusion, root dilacerations, taurodontism, and concrescence. DI is an anomaly resulting from invagination in the surface of a tooth crown or rarely the root and which is lined by enamel and dentin.
What tooth has the most anomalies?
The third molars in the permanent dentition are the most commonly missing teeth, followed by the mandibular second bicuspids or the maxillary lateral incisors. Congenitally missing maxillary lateral incisors often present an esthetic challenge (Figure 1).
What are the developmental abnormalities of mouth and dentition in small animals?
Developmental Abnormalities of the Mouth and Dentition in Small Animals 1 Persistent Deciduous Teeth. Deciduous teeth of kittens and puppies are designed to function in… 2 Unerupted Teeth. Tooth eruption is genetically programmed. 3 Malformed Teeth. Any interruption during tooth formation can result in a deformed tooth.
What are abnormally located or directional teeth?
Abnormally located or directed teeth can result in malocclusions or affect the positioning of adjacent teeth. Extraction can be performed in severely affected animals; many cases are considered incidental findings.
What are the different types of dental anomalies?
Many other individual tooth anomalies are seen occasionally, such as supernumerary teeth, twinning and fusion of teeth, supernumerary roots, and “peg” teeth (short cylindrical teeth). Enamel hypoplasia or hypomineralization is treated with early dentin sealant to prevent bacterial ingress to the pulp.
Why do brachycephalic dogs have malpositioned first premolar teeth?
Some brachycephalic breeds are predisposed to malpositioned first premolar teeth that remain unerupted because of their abnormal position. Trauma can also move a tooth bud into a position in which it is unable to erupt because of impact against another structure.