What is Taurodontism of teeth?

Taurodontism is a developmental disturbance of a tooth in which body is enlarged at the expense of the roots. An enlarged pulp chamber, apical displacement of the pulpal floor and lack of constriction at the cementoenamel junction are the characteristic features. It appears most frequently as an isolated anomaly.

What causes taurodontism?

The etiology of taurodontism is unclear, but it also appears in certain genetic syndromes. It is thought to be caused by the failure of Hertwig's epithelial root sheath diaphragm to invaginate at the proper horizontal level, resulting in a tooth with normal dentin, short roots, elongated body, and enlarged pulp.

When does taurodontism occur?

Taurodontism is a disorder of tooth development and occurs most commonly in permanent molar teeth. It refers to an elongation of the pulp chamber of the tooth, which can cause the tooth to lie deep in the jaw (aveolar process).

Which tooth is most commonly affected by taurodontism?

Although permanent molar teeth are most commonly affected, reports have indicated that taurodontism may not be limited to molars, as it also occurs in the premolar teeth. Taurodontism may complicate endodontic, orthodontic and/or prosthetic treatment planning.

How is taurodontism measured?

Taurodontism index (TI)=distance from the lowest point at the occlusal end of the pulp chamber to the highest point at the apical end of the chamber (denoted: a) ÷ distance from the lowest point at the occlusal end of the pulp chamber to the apex of longest root (denoted: b)×100.

Taurodontism and MCQs

In which stage of tooth development does taurodontism occur?

In individuals with dentine dysplasia a differential diagnosis of taurodontism may arise at the early stage of dentinogenesis, since the pulp chambers may be large and resemble those which characterizes taurodontism.

What is hyper taurodontism?

Taurodontism is a developmental disturbance of a tooth in which body is enlarged at the expense of the roots. An enlarged pulp chamber, apical displacement of the pulpal floor and lack of constriction at the cementoenamel junction are the characteristic features. It appears most frequently as an isolated anomaly.

What does dilaceration mean?

Dilaceration is defined as a deviation or bend in the linear relationship of a tooth crown to its root.

What does Anodontia mean?

Anodontia is a genetic disorder defined as the absence of all teeth. It usually occurs as part of a syndrome that includes other abnormalities. Also rare but more common than anodontia are hypodontia and oligodontia. Hypodontia is genetic in origin and usually involves the absence of from 1 to 5 teeth.

What are ghost teeth?

Regional odontodysplasia (RO) is a rare condition that gives teeth a fuzzy appearance in x-rays. These shadowy images are why this disorder has been given the more memorable nickname, "ghost teeth." But regional odontodysplasia doesn't just impact how your teeth look.

What is Dentinogenesis imperfecta?

Dentinogenesis imperfecta is a disorder of tooth development. This condition causes the teeth to be discolored (most often a blue-gray or yellow-brown color) and translucent.

What does the bull mean in dentistry?

An acronym for "Buccal of Upper, Lingual of Lower". A method for adjusting occlusion described by Dr. Clyde H. Schuyler where the adjustment is made to the inclined planes of the upper buccal cusps and the lower lingual cusps in order to preserve the centric stops on the cusps which are normally in occlusion.

What is germination in dentistry?

Gemination occurs when a single bud splits and forms two teeth. Germination typically looks like a single enlarged tooth, so there's no difference in your tooth count. People sometimes confuse gemination in teeth with tooth fusion, but tooth fusion is a different condition.

Is supernumerary teeth genetic?

Presence of supernumerary teeth is well-recognized clinical phenomenon. However, it is uncommon to find multiple supernumeraries in individuals with no other associated disease or syndrome. Presence of multiple supernumerary teeth is thought to have genetic component.

What is supernumerary root?

Supernumerary roots is a condition found in teeth when there may be a larger number of roots than expected. The most common teeth affected are mandibular (lower) canines, premolars, and molars, especially third molars. Canines and most premolars, except for maxillary (upper) first premolars, usually have one root.

What is the cause of anodontia?

Anodontia is caused by genetics. It's different from missing teeth due to gum disease, a mouth injury, cavities, or tooth decay. Instead, anodontia is inherited (passed down from parent to child) in what's called an autosomal recessive pattern.

What causes oligodontia?

Possible causes of oligodontia include viral disease during pregnancy, genetic predisposition, metabolic imbalances, developmental abnormalities and environmental factors. Autosomal dominant mutations in PAX9 and MSX1 have been found in patients with molar non-syndromic oligodontia.

What is dental oligodontia?

Oligodontia is a rare genetic disorder which represents the congenital absence of more than six teeth in primary, permanent or both dentitions. It is usually a part of a syndrome and seldom occurs as an isolated entity.

What causes Abfraction?

Abfraction is caused by stress and pressure applied to the teeth through biting, chewing, clenching the teeth, and most commonly, teeth grinding. These forces put great stress on the teeth near the gum line, where the enamel and cementum of the teeth meet.

What is ankylosis in dentistry?

Tooth ankylosis is the pathological fusion between the alveolar bone and the cementum of teeth. It is an uncommon phenomenon in the deciduous dentition or baby teeth and is even less common in permanent teeth.

What is Hypotaurodont?

Hypotaurodont shows mild enlargement of the pulp chamber at the expense of the roots. In mesotaurodont the pulp shows moderate enlargement with short roots which are still separate, while in hypertaurodont the pulp chamber reaches the apical 3rd and then may break into two or four channels.

What is Leong's premolar?

What is Leong's premolar? Some permanent premolars have a projected portion of the tooth structure which is fragile; this kind of premolar is called 'Leong's Premolar'. If the projected portion fractures, the pulp inside the tooth may be infected and becomes necrotic, or even results in formation of abscess.

What is Shell teeth?

Shell teeth, a rare dysplastic condition of dentin, was first described by Rushton in 1954. It is characterized by normal enamel, extremely thin dentin, correspondingly large pulp chambers, and shortened roots.

What is taurodontism anthropology?

Taurodontism is defined as the enlargement of pulp chambers with the furcation area being displaced toward the apex of the root.

What is fusion and gemination?

[1] Gemination is clinically similar to fusion and is assessed by the count of teeth in the dentition. Gemination is a single enlarged tooth in which the tooth count is normal when the anomalous tooth is counted as one. Fusion is the combining of two tooth germs to form an enlarged tooth.