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The expansion of dental-ceramic mass depends on the chemical composition of ceramics and temperature. If the temperature range is high (large), then due to superficial tension, cracks will appear in the material. This article presents a series of tests in the weight ceramic powder and sintered state. [ABSTRACT FROM AUTHOR]

Chronic apical periodontitis have a great importance in the framework of odontal pathology through its frequency and local and general complications that it may generate. Physiologic, functional or iatrogenic aggression over the pulpal tissue leads to the apparition of degenerative processes that may amplify until becoming pathologic, producing an acute or chronic pulpitis, simple gangrene or its complications in the periapical aria - acute and chronic apical periodontitis. Periapical lesions usually have a chronic evolution as a connective, epithelial or cystic granuloma, forms under which local reactionary proliferative processes of the connective tissue are accompanied by degenerative forms. [ABSTRACT FROM AUTHOR]

Deep, covered occlusion, being characterised by the increased occlusion and by the retro dentition of all superior incisors, can sometimes raise esthetic problems in elder patients who, because of various reasons, cannot undertake an orthodontic treatment adequate to the clinical situation. Oral reabilitation of the patients with this type of anomaly is applied only in certain clinical situations, having as purpose the reconstruction of the maxillary system, normalising the guides as much as possible. [ABSTRACT FROM AUTHOR]

The approach of the mandibular prognatism, both skeletal and functional, with functional treatment is very used nowadays, functional appliances are effective through their complex action during the mixt dentition at the skeletal, dental and muscular levels. We present two cases treated with Balters bionator and Frankel appliance. [ABSTRACT FROM AUTHOR]

The statistic analyis carried out on the two groups ( different as number of patients), has tried to establish similarities and/or differences between the clinical aspects studied, a correlation between the characteristics of the prosthetic fields totally edentulous and the examined patient. The synthesis of the study's result is absolutely necessary, allowing to emphasise the causative connections and mechanisms specific to the evolution of the totally edentuluous prosthetic field. The socio-economic conditions are an important factor involved in the great variability of the shape and size of the osseous underlayer, but especially on morphological structures represented by mucous-periosteum. The statistic and clinical study has proved that each totally edentuluos prosthetic field is unique, being influenced by the socio-economical standard, cultural conditions and hygienic habits. [ABSTRACT FROM AUTHOR]

When the totally edentulous status appears, the anatomical and neuro-muscular conditions that triggered, adjusted and influenced the mandible movements change tremenduously. Total edentation, set in suddenly or slowly ( gradually) is characterised by its own engrame being difficult to appreciate the proportion that remained from the dentulous status or the engrames formed during the partial edentulous phases. The relationship between jaws in the totally edentulous patient are analyse in order to see if there are changes and what their value is. Determination and restauration of the relationship between jaws are obtained easily and a superposition of the maximum intercuspidity with the centric relationship that is the ideal one is achieved. The lack of the maximum intercuspidity superposition with the centric relationship represents a great mistake that can cause severe disturbance in mandible movements because the occlusion-teeth contacts produce slides ( slips). [ABSTRACT FROM AUTHOR]

This method decreases the number of stages during the total edentulous treatment with removable prosthesis. In the first stage the functional impression was taken under oclusal pressure with the old removable prosthesis then was the probe for macheta and finally in the last stage the total removable prosthesis was applied. [ABSTRACT FROM AUTHOR]

This article describes the intracoronal and extracoronal attachments as a connection between the crowns and framework prosthesis. It also describes the indications, advantages and disadvantages of this kind of connection and presents some representative examples of them. [ABSTRACT FROM AUTHOR]

Total edentatia represents a very important affection, specialy for old people, generating serious functional and morfological troubles of the stomatognathic system. In many regards, the edentulous patients presents the same characteristics, in a global aria - regarding the evolution of simthomatology, behaviour and treatment. However, exists enought differences, which justify us to make investigations and find out the best methods of treatment. [ABSTRACT FROM AUTHOR]

Aim. Recent studies demonstrate the importance of occlusal balance of total removable denture when applying them in the prosthetic field. The purpose of this study is to assess the distribution and number of dental contacts in total removable denture resulting total coincidence with the result obtained and the relationship between MCR. Materials and methods. Study group included a total of 198 patients who were total edentulous in the begining an have been hearing over three years in Removable Prosthetics dental discipline. Detection of dental tooth contact was made with the joint paper with a thickness of 60 microns by interposing it between their dentures when applying them on the prosthetic field. Results. Of the 198 patients studied, 119 were bimaxilar edentulous and 79 unimaxilar so that the number of implants examined was. Of the total of 317 dentures in bimaxilar edentulous patients a total of 87 had bilateral contacts in the application of dentures and balancing does not require chewing sessions, and the rest had unilateral dental contact intensity and required less chewing balancing sessions. In unimaxilar edentulous patients percentage of patients who underwent occlusal equilibration was higher, this being due to antagonists. Conclusions. This study demonstrated the importance of occlusal balance when applying dentures on edentulous prosthetic fields. Statistically, it was demonstrated an unequal distribution of dental contacts especially in total unimaxilar edentulous patients, and the presence of dental contacts distributed in balance in bimaxilare denture. [ABSTRACT FROM AUTHOR]

Introduction. The dental abnormalities of number have a lower frequency than other, compared with other malocclusions, however, can cause changes that require therapeutic intervention due to esthetic disorders and secondary disturbances to the dental arches and bite reports. Methods. Clinical and statistical study was conducted on a sample of 465 patients aged 5-18 years in the clinic's in the period 2010-2011. Each patient was issued with summary observationsfi le and from clinical and complementary examinations (exo and endo-oral photos, orthopantomography, lateral cephalometric) have formulated a complete and comprehensive diagnostic, thereby established therapeutic conduct. Results and discussion. From the group of patients were diagnosed with supernumerary teeth 33 patients, representing 3.8% of all patients. Sex ratio was 2/1 in favor of boys. In the 33 patients diagnosed were found 47 supernumerary teeth, both maxillary and mandibular, all of supernumerary teeth were permanent teeth. Of the 33 cases 72.7% presented and malocclusions, the sex ratio of 2/1 in favor of boys. Conclusions. Supernumerary teeth have a low frequency to malocclusions, as it is shown in present statistical study in which only 3.85% of patients had supernumerary teeth. Supernumerary teeth occur more frequently in the upper jaw, affecting especially the front. [ABSTRACT FROM AUTHOR]

Installing of total edentulous mandible is a watershed moment in the life of that patient. Whether that time itself is total edentulous jaws before or after it appeared, this moment in the patient described himself as a moment of panic, helplessness functional, psychological and social decline. The lower jaw that it is provided with teeth represent primary, main executive element of chewing, and even the antagonists in the upper jaw ridge is a total edentulous, the patient still have some operational safety. [ABSTRACT FROM AUTHOR]

Elder patients have the most varied morpho-clinical characteristics to most of the dentists which constitutes extremely favourable factors from the practical experience shaping and development point of view. Solving very difficult cases shall show the professional capacity that dentists have at that stage. These pacients, if they were aware of the stomatognathic system status and if they are satisfied at the end of the therapy stages, become and turn into active factors of the applicants number increase. [ABSTRACT FROM AUTHOR]

The piriform tubercle is a very important element in the support area, considered by some authors as biostatistical area. At this level, the mandibular prosthesis cannot be extended to the maximum, only the anterior 2/3 of the tubercle are covered by the prosthesis in order to prevent its dislocation when the mouth is opened to the maximum (during this movement, the prerygomandibular ligament, which has an insertion in the distal 1/3 of the piriform tubercle, is strained). [ABSTRACT FROM AUTHOR]

Tooth wear is a universal experience. The cause is usually a combination of erosion, attrition and abrasion. Attrition usually presents with flattened incisal and occlusal tooth surfaces. Erosion from dietary or gastric acids forms smooth lesions which typically appear as cupped occlusal/ incisal surfaces. When combined with attrition or abrasion, acids have the potential to cause significant wear. Wear reduces the thickness of enamel exposing the underlying dentine and changing the colour from the white of enamel to yellow of dentine. Acids causing erosion originate from the stomach or from the diet. Gastric acid is associated with reflux disease and eating disorders. The frequency of acidic foods and drinks and how they are consumed is important in dietary erosion. The progression of tooth wear is recognised to be slow with periods of activity and inactivity. Although restorations can be indicated, prevention and monitoring remain important strategies in maintaining the life of the teeth. [ABSTRACT FROM AUTHOR]

Management depends on the type of supernumerary teeth and supernumerary position, the effect or potential effect on adjacent teeth and the patient's age. This anomaly should be seen as an isolated. Supernumerary tooth type and position, and actual or potential effect on adjacent teeth, influences therapeutic conduct. It depends on patient age. Most supernumerary often be removed as soon as possible to ensure a favorable outcome of the dento-maxillary. [ABSTRACT FROM AUTHOR]

Currently, guided implantology allows the use of a software that helps the practitioner to obtain a surgical guide in order to insert implants in areas rich in osseous offer and, therefore, he/she can renounce osseous grafts. Introduction. A 38-year-old male patient came to the dental offi ce. He needed a speciality implant-prosthetic treatment. As a result of the endo-oral clinical and radiological examination, we noticed the occurrence of bilateral edentation of the upper canines, with two 13-year-old Maryland bridges. The two upper canines were in palatal position and the dentist preferred extraction and not the orthodontic treatment. The patient recalls that, over time, there were multiple episodes of decementation of the two temporary dental bridges and also episodes of dentinal sensitivity in contact with physical stimuli. He also recalls that each recementation was followed with multiple interventions on aggregation elements or on pillar teeth. Subsequently, there were performed study photos, impressions of the study and the 3D scanner was used. The proposed solution by the dentist previously was to insert two endoossesous implants after an initial autogenous graft with iliac crest assay. Conclusions. In this clinical study, we proposed the building of a surgical guide used in Simplant software, having as purpose the insertion of two Zimmer TSV implants with 13 mm length, without appealing to the osseous procedure initially proposed for the two implants. In our case, the permanent prosthesis was performed two months after the successful insertion. [ABSTRACT FROM AUTHOR]

The main purpose of this study was to determine the expansions of alloys used in selected metal-ceramic prosthetic works and two other dental restorative materials (zirconia and all-ceramic) in the 20-1,000°C range and also the coefficient of linear and medium thermal expansion, after the 3 thermal cycles that simulate the termal behavior at ceramic tiling. Differences between the thermal expansion coefficients of Ni-Cr alloys and Co-Cr and dental ceramics in the range 20-1,000°C were determined aftere a thermal cycle. [ABSTRACT FROM AUTHOR]

The main aim of the research was the analysis of correlations that are established between a number of evaluation parameters of patients in selected group and treatment solutions applied. The study includes 267 patients belonging to the age group 20-30 years, 31-40 years, 41-50 years and 50 years. All patients underwent a clinical examination and laboratory. Following clinical examination were collected subjective and objective data regarding the state of partial edentulous. Later clinical examination established a treatment plan taking into account both the socio-economic condition of the individual subject and the advice. [ABSTRACT FROM AUTHOR]

Physiognomy dysfunction refers to changes localized to the anterior teeth, resulting in a deterioration of harmony dental dental dental-alveolar and dental-facial, with negative consequences for their images, as well as the perceived entourage. The purpose of this paper is to highlight therapeutic solutions morphofunctional anterior teeth in patients who have disorders physiognomy. Material and methods. For the study 158 patients were examined, 100 women and 58 men, aged between 20 and 40 years, who had dysfunction physiognomy. Results and discussion. Physiognomy dysfunction using porcelain veneers, unlike direct composite resin veneers, highlighted a number of advantages and disadvantages. Conclusions. The choice and application of treatment should be individualized to each case. [ABSTRACT FROM AUTHOR]

The food requirements of human beings are influenced by age, sex, regional and constitutional type, health and the socio-economic activity they are involved in. The constant contribution of food, both qualitative and quantitative, represents the daily diet which ensures the normal metabolism for each person. In the case of partially or totally edentate patients, with or without prosthesis, patients who in most cases are aged, administration of food is closely connected with their dental status and their masticator ability. The treatment of edentation by means of a mobilized prosthesis will influence immediately and decisively the daily diet of the patient, and therefore it will often be qualitative and quantitative diminished. Such a diet established on a long term will lead to the appearance of malnutrition with direct consequences upon the stomatognat system. [ABSTRACT FROM AUTHOR]