Ankara Universitesi Dis Hekimligi Fakultesi dergisi = The Journal of the Dental Faculty of Ankara University最新文献

In this article, a modified Dolder bar attachment application is presented in two cases. The egg-shaped bars are casted in chromium-cobalt metal alloy and the retention loops are made of clasp wire in "omega" shape. The bar attachment has some advantages like being easy to fabricate and having lower cost. The laboratory made modified Dolder bar attachment we used with overdentures provided additional retention for the dentures, minimized the horizontal and vertical movements of the dentures and also strengthened the abutment teeth by splinting. As a conclusion we have tried to show that this attachment can be an alternative to use with overdentures.

In this research, total of 12 persons, 7 women and 5 men, 21-24 ages were tested. Gingival index, Greene and Vermilion simplified oral hygiene index and sulcus depth measurements were determined for both groups, local heat changes were measured in upper and lower vestibular, lingual and or palatinal keratinized gingival mucosa. According to the results, in the patient group, upper heat levels were found higher than lower levels. But only in the anterior region, the difference was statistically significant (p less than 0.05). Local heat changes were found higher in the patient group than the control group for all areas but the difference was not statistically significant.

Harmful effects that result from psychic influences on the organic control of tissues are known as psychosomatic disorders. Psychologically, the oral cavity is related directly or symbolically to the major human instincts and passions. In this article, before treating two patients, who have gingival recession and itching, the importance and necessity of their treatment of psychiatric disorders were mentioned and the relationship between psychiatry and dentistry is explained.

Our research was carried out on maxillary casts obtained from 40 patients at prepubertal and postpubertal stages. The individuals were divided into four groups and each group consisted of 10 boys and 10 girls. The cases at prepubertal and postpubertal stages, had mixed dentitions and permanent dentitions respectively. On these casts intermolar and intercanine arch width, arch length, ratio, palatal vault depth and palatal volume measurements were performed. In the maxillary dental arch, the changes associated with the development in both sexes and the differences between the sexes with respect to the measurements were evaluated by paired t-test. The correlation of these measurements were also analysed. Consequently our findings were evaluated in the light of recent publications in the literature.

Some properties are required in dental cements used in fixed restorations. One of them is the acidic characteristic of the material since (OH)- ions released during the setting phase may have undesirable effects on the pulp. In this study three different luting cements were tested regarding to their PH values during setting reaction and was found that cements used caused PH changes. Acidity of cements had changed considerably depending upon time and it was determined that PH values of three cements decreased in the period of 24 hours.

Currently, the use of non-precious metal alloys in fixed prosthetic restorations has warranted review of the work done sofar using precious metal alloys. One of the parameters exhibiting the success of castings done using non-precious metal alloys is porosity, which is evaluated through such methods as rod forms, waxing heat, to investing and other castability methods. The porosity ratios of cats similarly done employing different investment expansion methods have been evaluated. While there is no statistical difference due to different methods, the hygroscopic expansion method noted successful results.

In 1973, ROCHETTE introduced a periodontal splinting method that involved bonding of cast perforated retainers to the acid etched lingual surfaces of anterior teeth, using a resin. Nowadays, there have been a number of reports on the clinical performance of the adhesive bridges. The objective of this investigation was to photoelastically evaluate the forces exerted on the supporting structures of abutment teeth by modified resin-bonded cast fixed partial dentures. Four modified designs were tested and a traditional fixed bridge used as a control design. This study indicated that the resin bonded cast fixed partial denture with the lingual chamfer margin and mesial rest was the design to be chosen.

In this article, a severe gingival hyperplasia case which was seen in maxilla and mandible of a 13 years old male patient who has mouth breathing was presented and some knowledges about this subject were reviewed. It was observed that the patient has nasal obstruction and he was called for nasal operation after he finishes the age of eighteen. His luxe primary teeth were extracted. For the time being to provide esthetic and function, gingivectomy was performed on upper and lower jaw.

Prepubertal Periodontitis, Juvenile Periodontitis and Rapidly Progressive Periodontitis were grouped under a single title, Early-Onset Periodontitis. These diseases were affecting the patient at a very early age and the prognosis might be an edentolous mouth. The diseases had specific host response defects. Our study was planned to study the humoral immunity of this kind of patients.

Mast cells are the normal components of the connective tissues. They are found in different densities and different regions of the inflamed and healthy gingival tissues. The role of mast cell mediators in periodontal disease progression were not studied in detail. Since the roles of mast cells in periodontal tissues are not clear, this study aimed to count the number of mast cells in gingival tissues of healthy volunteers and patients with gingival inflammation. Numbers of mast cells were found increased on inflamed tissues comparing to healthy tissues. This increase is closely related with the degree of inflammation on the fields which counting made on.