Odontostomatologike proodos最新文献

One of the most difficult parts of the perio- prosthetic treatment is the evaluation and the prognosis. This paper presents the basic factors affecting a successful prognosis. Factors like bone support, mobility, distribution of the remaining teeth, root morphology, etc. as well as factors like the "patient", abilities of the therapist, etc. has been presented. From our clinical experience and from the review of the literature is presented the basic guideline of a successful prognosis. "Prognosis" is not one of the black arts--it is a system of therapeutic projection based upon successes and failures of the past.

A rare case of hemifacial microsomia of the mandible whose etiological entity is delineated from the bad posture of the foetus in the womb during the foetal period, is described. In this case, the combination of orthodontic and maxillofacial treatment, gave satisfactory results as regards the aesthetic problem of the person, the occlusal disturbances and the function, of the masseter and the temporalis-muscles. These functions were checked before, during and after the treatment by means of electromyograms, and a more balanced activity of these muscles could be detected after the combined treatment.

Shade selection is a crucial clinical step during prosthetic treatment. Nevertheless, because it is based on subjective criteria, very often the esthetic result is compromised due to inadequate color reproduction. In order to explore this complicated problem, this paper attempts to analyse it as scientifically as possible. Initially, the physical phenomenon of "Color" is analysed. Color depends upon the light source, the object and the observer. Metamerism is the fatal enemy in shade matching. Shade selection through the use of shade guides is inadequate due to lack of standardization. Therefore the possibilities of improved application of the available materials are thoroughly explored for both simple and more complicated cases. Best results can be achieved by segmental color selection (separately for dentin and enamel).

The aim of this study was to investigate the incidence of the double mental foramen in a sample of Greek population. Four hundred sixty four dry human mandibles were studied two hundred thirty referred to men and two hundred thirty four to women. Double mental foramen were found in 6.68% per cent of the cases (6.95% women and 6.41% in men). There was no statistical significance between sex and this kind of entity.

This study examines the incidence and severity of postoperative complications during the surgical phase of periodontal treatment. The postoperative pain, swelling and bleeding were evaluated in 500 periodontal surgeries. Frenectomies, fenestration procedures and root amputation procedures were not included. When all the steps of periodontal treatment were followed and the patient was performing adequate plaque control, the postoperative complications were minimal. We were interested not in the pharmaceutical preparation of the patient but in the psychological one. Antibiotics were used only in cases that a medical problem required their administration. The bleeding incidences were due to mechanical trauma of the surgical area. Our results are almost identical with the results of similar studies. The overall result indicates that the risks of postoperative complications and pain after periodontal surgery are minimal.

The purpose of this investigation was to examine the performance of 10 V.L.C. units according to the depth of cure of the composite resins by measuring the hardness difference (delta H) on the top and the bottom of cylindrical specimens 2.3 and 4 mm high. According to the results (a) there is a different performance between the units when the depth of cure exceeds the 2 mm (b) the type of composite resin (macrofille or microfille) has a significant influence of V.L.C. unit performance and (c) performance of the two types of V.L.C. units--with and without flexible photocolor--is almost the same.

This is a study aiming at: a) reviewing the information found in the relevant literature as regards the etiology, incidence, distribution, implication and management of the tori mandibularis, b) evaluating the incidence, location and morphology of this bony mass in a sample of Greek population and c) comparing the findings with those of other investigators. The material consisted of 357 patients, from 20 years old and onwards, who had consecutively visited the Clinic of Removable Prosthodontics for some problem. After clinical examination and tabulation of the findings, the following conclusions were drawn: a) the etiology of appearance of tori mandibularis remains unknown; b) in our sample, 12.8% had this condition; c) the incidence was higher in men (60.4%) than in women (39.5%); d) in our sample, the higher percentage of individuals showing the condition originated from Thraci (Northern Greece) while the lower came from Hepiros; e) No indication of a heredity factor was found; f) this condition is more often bilateral than unilateral and g) the torus mandibularis was extending from the canine to the area of the first premolar in 54.4% of the cases.

The purpose of this clinical investigation was to analyze the frequency and the causes of mortality (loss) of 50493 permanent teeth, extracted, during a ten-year (1968-1977) period, in Clinic Exodontia of Dental School University of Athens, at 27804 population of Greece (13140 males and 14664 females). The following conclusions were drawn from the statistical analysis and the interpretation of the results: The mean value of extracted teeth per person was 1.84 and was lower in females (1.70) from males (1.94). Independently of the sex and the jaws (maxillamandible) the greater percentage (60.69%) of extractions was to posterior teeth. The extracted teeth were more in maxilla (52.42%). The more per cent extracted teeth, independently of the sex, were the maxillary central incisors (9.51%) and lateral maxillary incisors (8.61%) and the lower, the mandibular canines (3.41%). Caries and periodontal diseases were responsible for 80.37% of extracted teeth, independently the sex and the age. Caries was the major cause of extraction until 40 years old (71.03%) and after this age the periodontal disease was the major cause of extraction (51.61%).

The vast use of oral contraceptives by a large percentage of women, in our days, has caused increased interest as regards the side effects that these "pills" might have. The purpose of this article was firstly, to review the mechanism of action of the estrogens contained in the contraceptive pills and to emphasize the possibilities that longterm use of these drugs may have in producing changes in the bones of the jaws. Subsequently, the authors describe the results of observations made in periapical X-rays taken for this matter at the Dental School of Tufts University. Finally, certain cases coming from the Oral Diagnosis Clinic of Athens University and from the Dental School of Tufts University, and showing characteristic radiographic findings in different locations of the mandible are presented.

The introduction of digital subtraction radiography for the evaluation of standardised dental radiographs offered increased diagnostic accuracy in the detection of subtle density changes over interpretation of conventional radiographs. The digital imaging techniques for the analysis of dental radiographs were reviewed with emphasis on periodontal diagnosis. Recently, these methods, which have been extensively tested in vitro, were applied to clinical trials for the assessment of alveolar bone density changes due to progression of disease or healing following therapy.