Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"Dental enamel"”.
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Evaluation of fluid transport processes in dental enamel. Methods to assess the relevance of enamel permeability in caries prevention and etching treatments.
This thesis evaluated in vivo and in vitro enamel permeability in different physiological and clinical conditions by means of SEM inspection of replicas of enamel surface obtained from polyvinyl siloxane impressions subsequently later cast in polyether impression ma-terial. This technique, not …
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An odontological study of ovicaprine herding strategies in the North Atlantic islands. The potential of dental enamel defects for identifying secondary product utilisation in an archaeological context.
… through the prevalence of developmental enamel defects. A histological methodology was developed, adapted to the specific nature of sheep molars through an understanding of formation processes and enamel structures. This established a relationship between weaning and developmental defects …
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Die Schaffung retentiver Strukturen im Zahnschmelz mittels Er, Cr:YSGG-Laser : unter Berücksichtigung der Befestigung kieferorthopädischer Brackets
… it is possible to create retentive structures on dental enamel by means of an Er,Cr:YSGG laser (( = 2790 nm). As reference procedure thereby the conventional acid etching technique served. The results were judged particularly on an orthodontical application, i.e. the temporary bracket bonding. To …
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Childhood diet and mobility at medieval (1240s AD) Solt-Tetelhegy, Hungary as reconstructed from stable carbon, nitrogen, and oxygen isotope analysis
… and nitrogen isotope analyses were conducted on dental enamel and dentin from 24 individuals to examine their childhood diet. Although previous stable isotopic research has described the diet of medieval European peoples, this is the first such study on a medieval Hungarian population. The enamel …
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Investigating FAM83H, a protein mutated in Amelogenesis Imperfecta
… imperfecta (AI) is a group of rare genetic dental conditions in which the dental enamel does not form properly. Patients with ADHCAI have soft, cheesy teeth due to a defect in the calcification of their enamel. These pathological FAM83H mutations are mostly predicted to encode truncated …
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The Role of Enamel Matrix Protein Amelotin on Biomineralization
Dental caries is one of the most common chronic diseases of people worldwide. Despite recent advances in oral health care and restorative dentistry, the problem of dental caries and erosion remains unresolved due to the lack of knowledge of the natural biomineralization process of tooth tissues. …
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The influence of baseline hardness and chemical composition on enamel demineralization and subsequent remineralization
… Several studies have reported that harder enamel with higher contents of calcium (Ca), phosphorus (P) and fluorine (F) coupled with lower contents of carbonate (C), magnesium (Mg) and nitrate (N) was found to be more resistant to demineralization. Additionally, the hardness of dental enamel …
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Selective fluoride removal by aluminum precipitation & membrane filtration
… it has the beneficial effect of improving dental health, but at high concentrations it causes skeletal and other problems. The drinking water standard for fluoride is 4.0 mg/L, but even at this level approximately 10% of exposed children will develop dental enamel fluorosis. Several small …
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An In-Vitro Study of the Temporomandibular Reaction Forces through Motion-Capturing and Robotics
… mechanisms to model the chewing process, dental training, and stomatognathic system (an anatomic system, including teeth, jaws, and associated soft tissues) rehabilitations. However, a few of them used a RAPR mechanism, which is more biologically congruent. The stomatognathic system has a …
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From the Mouths of Babes: Using Incremental Enamel Microstructures to Evaluate the Applicability of the Moorrees Method of Dental Formation to the Estimation of Age of Prehistoric Native American Children
… 1) the appropriateness of applying traditional dental aging methods derived from a Euro-American population to prehistoric Native Americans from the Ohio Valley and 2) the utility of incremental microstructures of dental enamel. Enamel microstructures such as perikymata and cross striations have …
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Kristallographische Texturen und richtungsabhängige mechanische Eigenschaften des Exoskeletts des amerikanischen Hummers sowie Texturen weiterer Biomaterialien
… have been examined, e.g. crab, horseshoe crab, enamel of a human tooth, teeth of a domestic sow and an european beaver, ivory, beech wood and the shell of a hens egg. Thereby it should be determined first, if these materials are examinable at all with the methods used here and which materials …
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Mineralogy and geochemistry of geophagic materials from Mashau Village in Limpopo Province, South Africa
… include perforation of the colon, damage of the dental enamel and anaemia. However, geophagic materials could also be a good source of mineral nutrients and beneficial for reduction of nausea during pregnancy.
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Techniques in deep imaging within biological tissue
… tissue and disease, the development of dental imaging devices to detect and diagnose dental disease (caries). Section (a) The ability of confocal and multiphoton microscopy techniques to image optical sections deep within biological samples is a major advantage in biology. Unfortunately, …
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Einfluss des Wassersprays auf die Ablation von Zahnschmelz mit dem Er,Cr:YSGG-Laser
… application of Er,Cr:YSGG laser on ablation of dental enamel. For this purpose, the combined dose of water and gas was defined and varied in order to gain a maximum of substance ablation avoiding any thermal damage of dental hard tissue. Therefore, 3, 4, and 5 watt power adjustments were …
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Putting teeth into the developmental origins hypothesis: A longitudinal study of early childhood malnutrition, enamel hypoplasia and adolescent health in Amazonian Bolivia
… reflect early childhood experience because enamel on the permanent teeth calcifies incrementally during early childhood and is sensitive to physiological stress. Defects in the enamel do not repair after occurrence or during the life course, leaving a permanent biological mark of …
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Desempenho clínico de diferentes estratégias de adesão de restaurações de lesões cervicais não cariosas
… às diferentes estratégias de adesão ao substrato dental. Métodos: foram utilizados um sistema restaurador adesivo (Single Bond Universal/Z350XT) com e sem condicionamento seletivo do esmalte e um cimento de ionômero de vidro modificado por resina (Vitremer) com e sem tratamento prévio com EDTA, …
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Effectiveness of Resin Infiltration and Mi Paste Cpp-Acp in Masking White Spot Lesions
The development of decalcification around orthodontic brackets and bands, commonly called white spot lesions (WSLs), is often observed in patients with poor oral hygiene during treatment (Behnan et al., 2010, Rodgers et al., 2010). In many instances, these WSLs continue to be visible after the …