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Results for “Tooth Abnormalities”

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At least 865 records · Page 48Linked to original sources
PubMed1989

[A rare facial disorder: cherubism].

A rare disorder involving primarily the maxillary region of the face, cherubism has a special place in the galaxy of osteolytic maxillary tumors. This disease is genetically transmitted and its pathogenesis is unknown at present. Its prognosis is considered as favorable since it progresses toward phases of regression and then disappearance--at least partial--of lesions. The main sequelae involve the teeth since agenesis often occurs which--as in the case presented here--is not very easy to correct.

Anodontia↗
PubMed1989

[The incidence of enamel projections on the roots of the permanent teeth].

In this study we examined the incidence of enamel pearls, projections islets and drops on account of 7388 extracted human permanent teeth. According to the macroscopic examination there were 54 (1.6%) enamel pearls situated on the molars of the upper and lower jaw. Pairs of enamel pearls were observed on three teeth, i.e. in 0.09% of the patients. Three enamel pearls were diagnosed on one tooth. Enamel pearls were most frequently found in the cervical third of the mesio- and disto-approximal root surfaces. However, they were not so frequent in the area of the tooth neck, i.e. on the passage to the root furcation. Enamel pearls were 0.3 to 2.8 mm in diameter. Enamel projections, islets and drops were identified on account of stereomicroscopic examinations of the tooth neck and the root furcation. These paraplastic enamel formations were observed in 560 teeth, i.e. in 14.1% of the patients. Enamel pearls and islets were most often situated on the buccal surface of the tooth neck along the inter-radicular groove and enamel drops on the buccal surface of the furcation roof.

Dental Enamel↗
PubMed1977

[Inter-radicular osteotomies. Apropos of 1 observation].

Although more common in recent years, inter-radicular osteotomies remain operations which pose the problem of the prognosis of the displaced teeth. In the light of one special case, the authors sought to assess these risks, in relation to the functional and aesthetic benefits of the surgical procedure.

Adolescent↗
PubMed1978

[Induction of jaw bone formation by tooth autotransplantation].

A case-report of segmental underdevelopment of the alveolar process in the upper jaw of an eleven-year old girl is presented. At the site where the alveolar ridge was underdeveloped, two impacted malformed incisors were found. The malformed teeth had almost normal crowns, but the root-development had terminated 1-2 mm beyond the cementoenamel junction. The patient was treated by removal of the two malformed impacted teeth, followed by autotransplantation of the developing second premolar with the intention of inducing bone formation. The result was promising. After 3 years the alveolar process had developed to almost normal vertical hight. Some considerations are made regarding the possible origin of the bone induction factors in tooth buds. The fact that this patient demonstrated an underdevelopment of the alveolar process in spite of the formation of almost normal crowns, is taken as evidence that the bone stimulating principle in tooth buds are not to be found in the enamel organ proper, but must be related to Hertwig's epithelial sheath, root development and tooth eruption.

Alveolar Process↗