Aim: The aim of this study was to examine and explain the various methods available to rate the erosion damage, and on which teeth and tooth surfaces of erosion damage mostly occurs in children and adolescents.Method: A literature review was conducted, based on 15 scientific articles that have been reviewed, evaluated and analyzed. Articles were searched for in the database PubMed.Result: Six of the articles used the TWI (tooth wear index), which is an index to diagnose the tooth wear in the primary and permanent dentition. Eight articles used other indices as they considered that the TWI was not sufficiently developed to register the degree of tooth wear on some teeth. Tooth wear in the primary dentition occurs most often in the canines and incisors. Tooth wear in the permanent dentition was found in the literature to be mostly occurring on the occlusal / incisal surfaces of all teeth and tooth surfaces.LyssnaConclusion: There is no common index in the articles but many of them use the TWI.

Bakgrund: Ett stifts huvudsakliga uppgift är att vara ett stöd för och bevara den koronala rekonstruktion i en endodontiskt behandlad tand med omfattande förlust av tandkronan. På senare år har efterfrågan för estetiska stift och pelare ökat och nya sorters stift och pelare har dykt upp på marknaden. Zirkonia är ett biokompatibelt och estetiskt material som relativt nyligen har börjat användas som material för stift och pelare. Syfte: Denna litteraturöversikt fokuserar på att analysera både in vivo och in vitro studier som har testat stift i zirkoniumdioxid. Avsikten är att summera senaste årens evidens för materialets relativt nya användningsområde och att försöka besvara frågeställningen om stift i zirkoniumdioxid är att rekommendera för kliniskt bruk. Material och metod: Totalt lästes 361 sammanfattningar och utav dessa sorterades 69 artiklar ut för fulltextläsning. Utav dessa uppfyllde 14 artiklar våra inklusions- och exklusionskriterier.

This thesis discusses the dress code during the Pitted Ware culture on the Swedish island of Gotland. Eight Pitted Ware grave-fields have been analyzed; only 74 skeletons have been identified with some sort of ornament that could have been attached to clothes. The grave-fields are rich in finds and in people nearly every age group is present. The analysis has shown that there are clear differences between the genders. The female always has some sort of seal tooth ornament around her waist and thighs.

Feline Odontoclastic Resorptive Lesions (FORL) is a painful disease that affects feline teeth and that is increasing in prevalence. The ethiology is still rather unknown. However, research on the ultra structure of the feline tooth may help us understand why FORL is so prevalent in cats and not in other species. Since the ethiology is still unknown, there is yet no profylaxis. The pathogenesis is rather well known; the hard structure of affected teeth gradually undergo odontoclastic resorption and resorptive lesions are often partly replaced with bone- or cementum-like tissue.

The purpose of this study was to investigate parents' knowledge about diet and dental caries. The survey was conducted using a structured questionnaire consisting of 19 questions regarding knowledge of diet and caries, and preventive measures. The questionnaires were distributed to parents who were visiting a dental hygienist or prophylaxis nurse with their children aged 0-3 years. A total of 88 completed surveys were collected. The study showed that the majority of the parents had knowledge about diet and dental caries.

Powder Metal (PM) gears are machine element components which operate under the same principle as conventional gears, but, due to their intrinsic material characteristic need to be designed slightly different, and its manufacturing process offers advantages previously unobtainable by conventional steel gear manufacturing methods. The use of PM in similar applications, such as synchronous hubs, makes them a suitable candidate for production in such material. The current master thesis work focuses on gear design using PM by utilizing finite element method (FEM) to reduce weight and inertia taking into account root bending strength and tooth deflection.First a topological optimization is used to determine feasible candidates for different web designs which have as objective to reduce volume, similar topologies were shown during different loading conditions; and hence, this topology was chosen as a suitable candidate. A shape optimization of the topological candidate was performed having as state variables root bending strength, independent for compressive and tensile side of the tooth loading; and tooth deflection, which in concept can be correlated to static transmission error (TE).Another aspect in this thesis analysed is the possibility to incorporate non-trochoid root geometry, a trochoid root is always present when machining with a hob, into the gear root and hence reduce the stress concentration here. Due to the use of PM, a non-symmetric optimized root can be achieved and hence be optimizing compression and tension.Results showed significantly lower inertia, for example certain results showed 40% reduced when compared to solid gear, with adverse effects as increase in tooth deformation and increase in maximum principal stress.

Introduction: Dental health globally is not equally distributed as shown by caries prevalence is higher in areas with more immigration outside Scandinavia and Western Europe and areas with lower socioeconomic status. To reduce the health inequalities in Borås, a dental health project was made in five kindergartens in the district Hässleholmen. Purpose: The purpose of the survey was, by interviews with the actors involved (teachers, children, parents and the public dental service) find out the views of the project, and whether the project is relevant and should continue. Method: The method used was qualitative interviews with the actors involved in dental health project. A total of 21 interviews were then consolidated by a qualitative content analysis.

Coca cola och sportdrycker är båda drycker som idag konsumeras i stora mängder världen över. Erosionskador på tänderna är vanligare än vad många tror eller ens vet om. Både vuxna och tonåringar dricker stora mängder erosiva drycker utan att veta om dess skador på tänderna. Dessa drycker börjar oftast drickas i tonåren men konsumtionen fortsätter sedan långt upp i åldrarna. Tandslitage är tandsubstansförlust som inte är av kariogen påverkan.

Feline odontoclastic resorptive lesion (FORL) is a tooth disease affecting both domestic and wild cats. Although FORL was described as early as the 1920´s, the etiology is still unclear. Several hypotheses have been presented but different studies have obtained contradictory results, and today there is no generally accepted etiology. Teeth affected by FORL are characterized by root resorption with progressive destruction of the tooth structure and alveolar bone as a consequence of clast cell activity. The disease is considered very painful when reaching a certain stage.

This paper deals with stable isotope analysis on the children of the early Christian cemetery in Varnhem, Västergötland. Human bone and tooth material from the cemetery has been analysed for stable carbon, nitrogen and sulphur isotopes. The analysis showed that the diet had been homogeneous and that the children had been breastfed, with a possible exception of the child from grave 100..

ABSTRACTThe aim of the study was to examine the prevalence and the location as well as the registration of gingival recessions among patients between 20-29 years of age, who are treated on the Dental Hygienist Programme at the University of Kristianstad. The study was performed as a recording study, where the first page of the base record paper was examined. We examined 295 base records. The result showed that gingival recessions only were registered on 3 % (n=10). Most of the injuries, 53 % (n=157), had been registered as toothbrush trauma.

The extent by which pet owners follow health care instructions falls within the confines of ?compliance?. The success of any given treatment is in part due to the way in which the owner complies with the instructions received from the advising veterinary professional. Studies abroad have found that the preventative dental care sphere suffers from a low compliance rate. Together with the fact that veterinary staff commonly issue advice on preventative dental care, this provided the impetus for undertaking the current research.

Dietary patterns has varied throughout history, both due to resource and cultural limitations. In this thesis, a study was conducted to establish the dietary patterns of eight individuals from an early Midieaval gravesite in Rambodal, Östergötland, in order to explain why they were buried there. This was done through stable isotope analysis on collagen extracted from bone and tooth on the buried individuals. The analysis showed that these indviduals had a diet that was mainly based on freshwater fish. This suggests that these people may have been christians, due to the fact that fish was not regarded as meat and therefore you did not have to abstain from it during periods of fasting.

Inledning: Prevalensen av karies och övervikt/fetma hos barn och ungdomar beskrivs kort. Syfte: Att kartlägga och analysera studier som undersökt sambandet mellan kariesprevalens och BMI hos barn och ungdomar. Följande frågeställningar ska besvaras: Finns det en korrelation mellan kariesprevalens och BMI? Har gruppen överviktiga barn och ungdomar högre kariesprevalens? Har gruppen underviktiga barn och ungdomar högre kariesprevalens? Metod: Frågeställningarna besvaras med hjälp av en systematisk litteraturöversikt. Resultat: Utav sammanställningens 28 artiklar visade 14 på samband mellan karies och BMI och lika många visade inget samband.

Osteological analysis was carried out on skeletons from nine graves from a medieval cemetery in Ny Varberg, Varberg, Halland. The graves originate from a monastery and a church, dating back to the fourteenth and fifteenth century. The main aim with this thesis has been to study health through the presence of pathologies and skeletal changes. Further aim was to compare the results from the present study with theresults from Torsten Sandbergs analysis of the same material from 1964. This comparison later showed coincidence.