نتایج جستجو برای: permanent dentition
تعداد نتایج: 66061 فیلتر نتایج به سال:
Supernumerary teeth are considered to be one of the most significant dental anomalies affecting the primary and early mixed dentition and may cause a variety of pathological disturbances to the developing permanent dentition. Early diagnosis and prompt treatment is necessary for prevention of deleterious effects on dentoalveolar structures. However, the time of intervention is the most crucial ...
Background: Primary tooth impaction is quite rare during the development of primary dentition. Various factors contribute to the impaction of a deciduous tooth, including anklyosis, congenitally missing permanent teeth, defects in the periodontal membrane, trauma, injury of the periodontal ligament, precocious eruption of the first permanent molar, defective eruptive force, or a combination of ...
Taurodontism is an aberration of teeth that lacks the constriction at the level of the CEJ characterized by elongated pulp chambers and apical displacement of bifurcation or trifurcation of the roots, giving it a rectangular shape. Its occurrence in permanent teeth is common and is quite rare in deciduous dentition. Presented in this article are two cases with taurodontism involving deciduous a...
In studying a group of fifty adult females with Class II division 1 malocclusion, it was evident that the skeletal problems of this malocclusion involved small, retruded mandibles accompanied by backward rotation. This skeletal pattern was considered to be influenced by the vertical dimension of the upper dentition in the buccal segment for mandibular function. The anterior and the posterior oc...
Inflammatory dentigerous cysts are usually associated with a carious or non-vital primary tooth. Consequently they are found in children with a mixed dentition. This report describes two cases of inflammatory dentigerous cysts associated with the lower second premolars. Both cases were treated by marsupialisation of the cysts that eventually led to the spontaneous eruption of the premolars.
Fusion and talon cusps are rare developmental dental anomalies affecting both primary and permanent dentitions. Talon cusps normally occur on the palatal surface of permanent maxillary incisors, while fused teeth are more common in the primary anterior dentition. An understanding of these dental anomalies and their associated problems are important to provide prophylactic measures, thereby prev...
A study of 528 Guatemalan children indicated that caries prevalence in the deciduous dentition was twice as great as but in the permanent dentition was similar to that for US white children. This is a repeated observation for children of some preindustrial societies. Caries experience was significantly greater in boys. Until 4 years of age, caries attack was greater in the anterior segment of t...
This retrospective study aimed to evaluate the difference in measurement between conventional orthodontic analysis and artificial intelligence pediatric adolescent patients aged 7 - 15 with mixed permanent dentition. A total of 60 (30 dentition, 30 dentition) who underwent lateral cephalometric radiograph for diagnosis were randomly selected. Seventeen landmarks identified, 22 measurements calc...
A case is presented of a nine-year-old male having a supernumerary maxillary right first primary molar together with a supernumerary maxillary right first premolar. The implications of early diagnosis and orthodontic management are discussed. The occurrence of supernumerary teeth in both the primary and permanent dentitions in the same patient seems to be rare. A review of the literature (inclu...
Citation: Xu L, Chen X, Wang Y, Jiang W, Wang S, Ling Z and Chen H (2018) Dynamic Alterations in Salivary Microbiota Related to Dental Caries and Age in Preschool Children With Deciduous Dentition: A 2-Year Follow-Up Study. Front. Physiol. 9:342. doi: 10.3389/fphys.2018.00342 Dynamic Alterations in Salivary Microbiota Related to Dental Caries and Age in Preschool Children With Deciduous Dentiti...
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