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

This research was designed in order to evaluate the mechanical properties, such as tensile strength, compressive strength, surface hardness and the elongation and reduction percentages of the length, of the metal specimens prepared from first, second and third generation castings of a denture base metal. The results revealed only a proportional decrease on surface hardnesses of the specimens casted from first, second and third meltings. While the other properties of all specimens had showed no significant differences between themselves, it was concluded that the denture base metals could be melted and used again at least three times.

The aim of this study is to investigate the depression prevalence using Beck Depression Inventory between the students attending to the first and last classes of Dentistry Faculty. We expected to find low depression prevalence in the first class students and high depression prevalence in the last class students. In the study, we have Beck Depression Inventory which included twenty one sentences to 84 Dentistry Faculty students. The results were evaluated by the psychiatrist. In conclusion, expected consequences were supported. We found that depression percentage was above 50% among Dentistry Faculty students.

Six patients who had undergone partial maxillary resection for the removal of oral neoplasms were studied. For each patient two types of obturators were made one being buccal flange and the other hollow-bulb. Speech evaluations were made under three conditions: 1- with the hollow-bulb 2- with the buccal flange and 3- with no obturator. Speech evaluations were made both audiovisually and from tape recordings. In both audiovisual and tape recorded speech evaluations, the buccal flange obturator produced speech which was significantly superior to speech with hollow-bulb obturator.

Two conventional and two high copper dental amalgams (Non gamma 2) has been investigated for their antibacterial properties. The high copper dental amalgam, Ana 2000 possessed a very small range of antibacterial propertie against Lac. acidophilus and Staph. epidermidis, while other amalgams found to have no antibacterial activity against the ten tested microorganism strains.

The occlusal plane is an important factor in stability and esthetic of dentures. The location of the occlusal plane in complete dentures is a controversial subject. The occlusal plane in complete denture has often been oriented anteriorly to fulfill esthetic and posteriorly to Camper's line. However, recently the methods used for locating the occlusal plane appear to be less limiting. The purpose of this investigation was to compare the different concepts of occlusal plane. A roentgenographic cephalometric investigation was conducted to compare the position of the occlusal plane of the artifical teeth with that of the natural teeth which existed before the remaining teeth were extracted.

The color stability of the composite filling material (Adaptabond-Hybrid) polished with different techniques -pumice-brush, sof-lex XT, adaptic polish-was tested by reflectance spectrophotometry. Samples were dipped in tea-coffee staining solution for the periods of 1, 2 or 4 weeks. All the samples were better than the group polimerized with celluloid matrix strip. No significant difference were found between the groups pumice-brush, sof-lex XT and adaptic polish for the periods 1, 2 and 4 weeks.

This study was done to determine the oral hygiene status of 104 patients wearing complete dentures, by modified Schubert-Schubert Index. These patients who were aged 28--76 were classified according to prosthesis wearing periods, such as 1--5 years, 6--10 years, 11--15 years and more than 15 years and assessed the oral hygiene status of them related to their prosthesis wearing years. In the second part of this study, a part of patients were given the oral hygiene education by means of brochures. After these patients became accustomed to their new complete dentures, old and new oral hygiene status of the patients were evaluated statistically. As a result, as the prosthesis wearing periods increased, oral hygiene levels decreased.

In this study modified Widman flap and incisional curettage techniques were compared on ten patients who had symmetrical defects with moderate pocketlevels. (5-6 mm) Different techniques were applied on different segments of upper anterior teeth of the patients. At the end of the observation period of three months inter and intra group comparisons were made biometrically according to the following parameters: PI (Löe-Silness) GI (Silness-Löe), pocket depth level, gingival fluid flow rate, gingival margin position and attachment level. Results of this study showed that, there was no difference between two techniques. It may be proposed to apply incisional curettage technique on the patients with moderate pocket depth.

Dyskeratosis congenita is a rare genokeratosis and characterized by, A) Reticular dermal atrophy and telangiectatic pigmentation, B) Distrophies of the nails, C) Oral leukokeratosis. In this article, a 22 year old male patient with Dyskeratosis congenita was presented and oral findings were discussed.