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Results for “tooth anomalies”

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At least 19 recordsLinked to original sources
PubMed1975

[Dental findings in children with hearing disorders].

Tooth findings are reported of 972 children aged between 3 to 18 years who suffer from impaired hearing. Logopedic pupils had significantly more tooth anomalies than those with impaired and normal hearing. The deaf pupils had significantly less dysgnathias than others with impaired hearing. As compared to those with normal hearing there was no significant difference.

Adolescent↗
PubMed1977

[Maxillofacial fractures in children].

With regard to aetiology, location and therapy, fractures of the facial skeleton in childhood occupy a special position due to the anatomico-morphologic pecularities of the infantile skull. To verify this statement, the author analysed the medical records of 58 patients with fractures of the facial skeleton, having an age range from 1 to 14 years. The fracture incidence was 9.3% as related to the total number of fractures of the facial skeleton. Traffic accidents (41%) were the main cause of these injuries. Clinical and radiographic follow-up examinations of 37 patients (after an average period of 5 years) revealed: jaw or tooth anomalies in 56.7%, anomalous radiographic findings concerning the condyloid process in 14.7%, and anomalous radiographic findings concerning the teeth in the former fracture line in 27%. Conclusions are drawn from these results as to therapeutical management.

Adolescent↗
PubMed1977

[Globodontia--a new familial tooth abnormality].

A new, congenital anomaly of tooth form transmitted as an autosomal dominant trait was found in a father and two of his three sons. While the incisors appeared unchanged, the posterior teeth have characteristic massive globe-shaped crowns with irregularly arranged, rounded cusps. The occlusal surfaces resemble in their extreme form the underside of a tomato. The relation to the otodental syndrome is not clear as yet.

Adult↗
PubMed2023

H4C5 missense variant leads to a neurodevelopmental phenotype overlapping with Angelman syndrome.

Recurrent de novo missense variants in H4 histone genes have recently been associated with a novel neurodevelopmental syndrome that is characterized by intellectual disability and developmental delay as well as more variable findings that include short stature, microcephaly, and facial dysmorphisms. A 4-year-old male with autism, developmental delay, microcephaly, and a happy demeanor underwent evaluation through the Undiagnosed Disease Network. He was clinically suspected to have Angelman syndrome; however, molecular testing was negative. Genome sequencing identified the H4 histone gene variant H4C5 NM_003545.4: c.295T>C, p.Tyr99His, which parental testing confirmed to be de novo. The variant met criteria for a likely pathogenic classification and is one of the seven known disease-causing missense variants in H4C5. A comparison of our proband's findings to the initial description of the H4-associated neurodevelopmental syndrome demonstrates that his phenotype closely matches the spectrum of those reported among the 29 affected individuals. As such, this report corroborates the delineation of neurodevelopmental syndrome caused by de novo missense H4 gene variants. Moreover, it suggests that cases of clinically suspected Angelman syndrome without molecular confirmation should undergo exome or genome sequencing, as novel neurodevelopmental syndromes with phenotypes overlapping with Angelman continue to be discovered.

Male↗
PubMed1975

Odontodysplasia. Report of two cases and review of the literature.

Odontodysplasia is a rare developmental anomaly affecting the tooth structures in both deciduous and permanent dentitions. The enamel is thin and uneven in thickness, and the detinal tissue surrounds very large pulp chambers. Denticles are present in the pulp organ. The maxilla is involved twice as frequently as the mandible. Most of the affected teeth are in the anterior segments; however, all other teeth can be affected. The cause is unknown. Because of the tendency of the affected teeth to develop abscesses, the most common treatment is extraction. Two additional cases are reported, and the literature is reviewed.

Abscess↗
PubMed1979

Inlayed teeth of ancient Mayans: a tribological study using the SEM.

A study has begun of inlayed teeth of Meso-American Indian skulls using scanning electron microscopy and modelling techniques. Round cavity preparations 2-3 mm in diameter and 1-2 mm deep had been cut through the enamel and just into the underlying dentin of the teeth. The vertical walls of the preparation met the floor in either a square, rounded or undercut form. Towards its center, the floor was occasionally elevated, sometimes depressed and commonly rounded. Closer examination showed abrasion anomalies as concentric, shallow grooves cut into the tooth tissue. A modification of the Semenovian principle was employed to determine the tool: 1) from the marks registered the the cavity and 2) the outline form of the preparation itself. Preparing cavities experimentally in teeth using wood and stone drills and sand as an abrasive produced certain characteristics consistent with those in the Meso-American teeth in which wooden drills created a variety of cutting patterns which included flat, elevated and depressed floors in the preparations. We have tentatively concluded that suggestions for the use of a tubular drill does not adequately explain the variety of forms encountered and that the cutting patterns were more consistent with the use of a wooden drill and sand.

Dental Cavity Preparation↗
PubMed1979

Developmental variations of tooth morphology and periodontal disease.

Some developmental variations of tooth morphology may influence the potential for periodontal disease by allowing accumulation of bacterial plaque and calcified deposits. Mechanical plaque control becomes difficult even for the conscientious patient. Periodontal disease may be hastened in these cases. The therapist must be aware of these variations and their significance in the etiology of isolated periodontal lesions. Recognition of these anomalies and early diagnosis may improve the prognosis of the involved tooth.

Dental Cementum↗