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Psychosocial Factors in Adaptation to Dentures
Published in Eli Ilana, Oral Psychophysiology, 2020
The patient’s expectations of his/her dentures often differ significantly from the dentist’s perceptions of what is good for the patient. A significant difference was found regarding the preferred appearance of teeth among dentists, dental students, and patients.12 Preferences differed for proportions of length and width of the teeth, and with respect to the symmetry of maxillary anterior teeth. While patients found horizontal symmetry pleasing, most dentists and dental students rejected the artificial appearance caused by this look.
Dental Caries: Resistance Factors — Enamel Chemistry and Saliva
Published in Lars Granath, William D. McHugh, Systematized Prevention of Oral Disease: Theory and Practice, 2019
Stephen H. Y. Wei, James J. Crall, James S. Wefel
It is increasingly evident that fluoride exerts a differential degree of caries protection on different surfaces of teeth. Based on epidemiological studies of the beneficial effects of water fluoridation, fluoride imparts the greatest degree of protection to smooth surfaces and much less to pit and fissure surfaces. The protection is also generally greater on buccal and lingual surfaces than mesial and distal surfaces.9,11 Anterior teeth appear to be protected more than posterior teeth. The protective effect of pre-eruptive fluoride is greatly reduced if fluoridation is discontinued subsequently.14 It also seems that the optimal effect of fluoride may depend on an interaction between the built-in fluoride of the enamel and the fluoride in the post-eruptive environment, and that fluoride acquisition may be increased following the development of an early carious lesion because fluoride appears to be preferentially concentrated in the white spot enamel lesion.
Nasal and Facial Fractures
Published in John C Watkinson, Raymond W Clarke, Louise Jayne Clark, Adam J Donne, R James A England, Hisham M Mehanna, Gerald William McGarry, Sean Carrie, Basic Sciences Endocrine Surgery Rhinology, 2018
Dental injuries to the upper anterior teeth are extremely common, but their management and prognosis is extremely complex. The optimal treatment protocol is determined by a number of factors that relate to the type of tooth fractured, the presence and level of any root fracture, the vitality of the pulp and the state of development of the root. It is essential that an expert opinion is sought from a maxillofacial surgeon or paedodontist. Fractured teeth can be temporarily repaired, exposed pulps capped with calcium hydroxide based pastes and mobile teeth splinted to adjacent teeth. Anterior permanent teeth that have been avulsed should be reimplanted at the first available opportunity and splinted. If the reimplantation is delayed, the tooth should be kept moist in the mouth of the patient or parent. Alternatively, the tooth could be stored in a glass of milk.
Compound heterozygous mutations in the SLC4A11 gene associated with congenital hereditary endothelial dystrophy in a Chinese family
Published in Ophthalmic Genetics, 2022
Min Liu, Jia-Li Xia, Hong Yang, Ling Yu
In addition to ocular symptoms, the two patients had definite dental problems, including complete caries of the anterior crown, residual gingival roots, caries on the adjacent surface of the anterior teeth under the deciduous teeth, and incisor involvement (Figure 1b). The parents reported that the deciduous teeth of the sisters developed normally after birth, and the caries appeared from the age of 3 years with gradual worsening. They denied that the sisters had abnormal eating and living habits. However, it was clear that both sisters showed a strong susceptibility to dental caries. Studies (17,18) have shown that resistance or susceptibility to caries is the result of one or more genotypes, phenotypes, and environmental influences. To date, more than 20 mutations have been found to be associated with susceptibility to caries, including in AMBN, FOKL, and HLA-DR4. However, is not clear whether the appearance of caries in our patients was related to the mutation reported in this study, or was due to the presence of a new site in the non-coding region of the genome, which requires further study by whole-genome sequencing.
Clinical management of fusion in primary mandibular incisors: a systematic literature review
Published in Acta Odontologica Scandinavica, 2020
Sara Bernardi, Serena Bianchi, Guglielmo Bernardi, Jörg Philipp Tchorz, Thomas Attin, Elmar Hellwig, Lamprini Karygianni
In literature, there are few reports on the incidence [13] and management [6,8] of primary fused teeth. The reason is due to the temporary nature of the primary teeth which are usually extracted in case of complications, and thus, no evidence of possible treatment modalities has been reported so far. As reported by Guimarães Cabral et al. the assessment of the presence of the double teeth is important in relation to the associated clinical problems such as caries, delay in the exfoliation, impactation of the subsequent permanent teeth, presence of supranumerary teeth, presence of permanent double teeth, aplasya of the correspondent permanent teeth and tooth misalligment, with a predispotion to a future malocclusion [12]. Indeed, the anterior teeth play a key role in the morphological development of the jaws and the facial type [14,15]. Finally, a systematic review was conducted in order to qualitatively summarize the therapeutic management of double teeth in primary incisors. To the best of our knowledge, this is the first systematic review of the treatment options of double anterior teeth in the primary dentition.
Fracture resistance, failure mode and stress concentration in a modified endocrown design
Published in Biomaterial Investigations in Dentistry, 2020
Wiam El Ghoul, Mutlu Özcan, Joao Paulo Mendes Tribst, Ziad Salameh
Endodontically treated teeth (ETT) displayed a high risk of fracture caused by the extensive loss of dental tissue [1], which requires suitable restorations in order to repair the pulpless teeth saving their biomechanical properties [2,3]. Placement of metal posts improves retention of the crowns, but it increases the risk of a root perforation and root fracture [4,5]. The biomechanical properties of fiber posts are more comparable to that of dentine decreasing the risk of accidental root fractures [6], but building an adequate ferrule can necessitate crown lengthening leading to unfavorable crown to root ratio [7]. Developments in dental materials [8–10], computer-aided design/computer-aided manufacturing (CAD/CAM) technologies [11,12] and bonding systems [13,14] improve the application of endocrowns [15,16] to restore the ETT, that prevents the failures of posts [17,18]. Endocrown preparation preserves the dental structure, which has supragingival margins on peripheral enamel tissue enhancing adhesive capacity [19]. Endocrown restoration is more recommended in molars than premolars and anterior teeth because they have a small pulp chamber and they are more subjected to lateral forces [17,19]. The performance of endocrown is related to many factors such as types of material [10,20,21], axis of loading [10,22], and shapes of preparation [23–28]. Lithium disilicate glass ceramic (LDS) is the most common material for endocrown restorations [23,24,27] due to its biomechanical properties [29,30].