A case of localized ridge augmentation from using a titanium membrane: a pilot study.

The aim of this investigation was to histologically compare the effects of new titanium membranes with those of proven expanded polytetrafluoroethylene (ePTFE) membranes on alveolar ridge augmentation. The study was carried out using a canine mandible where the right and left premolar teeth were previously extracted. At the second month of healing following extraction, a total of seven similar defects were created on both sides of the mandible. Three defects received the titanium membrane, one of which was in the right side of the mandible. Two defects, one on each side, received the ePTFE membrane. The remaining two defects, both on the right side, served as control. Fixation and stabilization of the membranes were accomplished by using the Frios Augmentation System. After three months of healing, the animal was sacrificed, block sections were taken and processed for histological examination according to the cutting and grinding technique. The results revealed that the ePTFE and titanium-treated defects, and the controls, showed complete bone fill with the exception that there was a more pronounced and thicker connective tissue formation in titanium-treated sites as compared to the ePTFE treated and control sites.

Long-term evaluation of surgical periodontal treatment with and without maintenance care.

A study was conducted on the effectiveness of individual maintenance recalls and the long-term effects of surgical therapy on pocket depth and tooth loss in 43 patients with moderate to advanced periodontal disease. Sixteen of the patients had periodic control and 27 were uncontrolled. Intervals of periodic recall ranged from 3 to 6 months according to individual needs. Pocket depths were measured from four aspects of each tooth and initially classified as shallow (1-3 mm), moderate (4-6 mm) or deep (7 mm or more). Changes in each pocket depth level were determined after 10 years. Tenth-year comparisons showed that the uncontrolled group had significantly higher mean pocket depth values. Tooth loss rate was 3.6% in the controlled group, and 14.1% in the uncontrolled group, and the mean numbers of lost teeth were 0.69 and 3.63, respectively, in the ten-year period. It was concluded that periodic recalls were essential for long-term success of periodontal surgery.

New attachment formation following periodontal surgery in a dog.

We evaluated new attachment following treatment of experimental periodontitis in a canine model. Periodontal destruction was induced over an 8-month period using silk ligatures and a soft diet, and this remained stable for 170 days before surgery. After surgical scaling and root planing of eight bicuspid teeth, the apical end of the pockets was estimated using an occlusal stent and a periodontal probe, then marked with a blade. The root surfaces of three bicuspids were treated with citric acid for 3 min, and tetracycline salt was applied to the root surfaces of two teeth. The remaining three bicuspids served as controls. Postoperatively, no attempts were made to improve oral hygiene, and on day 48 light microscopic examination of biopsy materials revealed new attachment in all treated teeth. However, in some sections new cementum and new collagen formation was much more extensive and complete in both groups of experimental teeth than in the control teeth.

[CPITN in a group of Ankara University students]. / Ankara Universitesi ögrencilerinde CPITN' in bir uygulamasi.

Several index systems have been used for the identification of periodontal diseases and assessment of periodontal treatment needs up to date. In 1982 World Health Organization and FDI have developed a new index system for the assessment of periodontal treatment needs "Community Periodontal Index of Treatment Needs" (CPITN) which was well adapted for the field studies. Because of it's being an universe and practical system, it has been the common language of periodontists in a few years. Our study which was carried out on the 271 students of Ankara University from each sex group using CPITN criteria have shown a wide spread of periodontal diseases among these students and 50 percent of code 2 treatment needs.

[Oral hygiene in complete denture wearing patients]. / Total protez kullanan bireylerde oral hijyen.

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.

[Comparative clinical study of modified Widman flap and incisional curettage techniques]. / Insizyonel küretaj ve modifiye Widman flap tekniklerinin klinik olarak karsilastirilmasi.

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.