Introduction: Periodontitis is a common chronic inflammatory disease characterized by the destruction of the supporting structures of the teeth. The host defense mechanisms are responsible for inflamatuar and destructive reactions in periodontitis. Celastrol is one of the most promising components of the plant in Eastern and Southern China that has a long history of use in traditional medicine for the treatment of inflammatory conditions. Aim: The aim of this animal study was to inspect the preventive or restrictive effects of celastrol on periodontitis-related inflammatory host response and alveolar bone loss. Methods: 24 male Sprague Dawley rats were randomly assigned into 3 groups: control, experimental periodontitis (Ep), and experimental periodontitis-celastrol (Ep-Cel). Periodontitis was induced by placing ligatures sub-paramarginally around the mandibular first molars of the rats in the Ep and Ep-Cel groups and maintaining the ligatures for 15 days. For 14 days following the ligature placement, celastrol administration (1 mg/kg BW day) for the Ep-Cel group and vehicle injection for the control and Ep groups was carried out. At the end of the experiment, mandibula and gingiva samples were obtained after the euthanasia. Alveolar bone loss was measured on serial histological slices; Tumor Necrosis Factor- α and Interleukin-1β levels were measured on gingiva samples by ELISA. Results: Systemic celastrol administration significantly restricted the alveolar bone loss that was higher in rats with periodontitis. (p

Tr en Amaç: Helicobacter pylori (H. Pylori), bir gram (-), mikroaerofilik bakteri olup, kronik aktif gastrit ve peptik ülserin etyolojik faktörüdür. Bazı çalışmalar, bu bakterinin, oral kavitede bulunduğunda, mide için potansiyel rezervuar olabileceğini göstermiştir. Çeşitli çalışmalar, H. pylori'nin kronik periodontitisli hastaların tükrük ve subgingival plaklarında görülebileceğini göstermiştir. Bununla birlikte agresif periodontitis hastaları ile ilgili herhangi bir veri yoktur. Bu çalışmada, kronik, agresif periodontitis ve gingivitis hastalarının subgingival plak örneklerinde H. pylori prevalansını saptamayı ve hastaların gastrik problemler konusunda bilinçlenmesini arttırmayı amaçladık. Gereç ve Yöntem: Bu çalışma, gastrik hastalık semptomu olmayan ve son 3 ayda antibiyotik kullanmayan 155 hasta (61 adet gingivitis, 60'ı kronik periodontitisli ve 34 agresif periodontitisli) içermekteydi. Subgingival plak örnekleri steril paper point kullanılarak alındı. H. pylori, A. actinomycetemcomitans ve P. gingivalis'in varlığı RT-PCR ile tespit edildi. Bulgular: Mikrobiyolojik analizin sonunda herhangi bir grupta H. pylori tespit edilmedi. Bununla birlikte, agresif periodontit grubunda yüksek oranda A. actinomycetemcomitans (%97.1) ve P. gingivalis (%100) görülmüştür. Bununla birlikte, A. actinomycetemcomitans ve P. gingivalis, kronik periodontitisli hastaların sırasıyla %30 ve %21.7'sinde bulunmuştur. A. actinomycetemcomitans ve P. gingivalis gingivitisli hastaların %24.6'sında bulundu. Sonuç: H. pylori, örneklerde saptanmamış olması, subgingival plağın bu bakteri için birincil rezervuar olmayabileceğini gösterdi. Objectives:  Helicobacter pylori (H. Pylori) is a Gram (-), microaerophilic bacteria and the etiological factor of chronic active gastritis and peptic ulcer. Some studies indicated that this bacterium found at oral cavity which is a potential reservoir for stomach. Several studies showed that H. pylori may found in saliva and subgingival plaque of chronic periodontitis patients. However, there is no data related to aggressive periodontitis patients. In this study, we aimed to determine the prevalence of H. pylori in subgingival plaque samples of chronic, aggressive periodontitis and gingivitis patients and to increase the awareness of the patients for gastric problems. Materials and Methods : This study included 155 patients (61 with gingivitis, 60 with chronic periodontitis, and 34 with aggressive periodontitis) who did not have gastric disease symptom and did not use antibiotics in the last 3 months. The subgingival plaque samples were taken using sterile paper points. The existence of H. pylori, A. actinomycetemcomitans, and P. gingivalis was detected by RT-PCR. Results: H. pylori was not detected in any groups at the end of microbiological analysis. However, a high occurrence of A. actinomycetemcomitans (97.1%) and P. gingivalis (100%) was observed in the aggressive periodontitis group. However, A. actinomycetemcomitans and P. gingivalis were found in 30% and 21.7% of patients, respectively, with chronic periodontitis. A. actinomycetemcomitans and P. gingivalis were found in 24.6% of patients in the gingivitis group. Conclusions: H. pylori were not detected in samples, indicating that subgingival plaque may not be a primary reservoir for this bacterium.

Objective: Heavy metals threaten life by accumulating in the body via various sources as water,air and foods. Smoking is one of the important factors that causes this problem. Despite there is an abundant number of studies showing the detrimental effects of smoking on periodontal health, the mechanisms that cause these harmful effects is not clearly known yet. The main aim of our study is to discover whether heavy metal deposition on the tooth surface is related to the disease-causing potential of smoking. Materials and Method: Total of 80 individuals consist of 43 women and 37 men were included in this study. The participants were divided into 4 groups of 20 individuals each according to the results from clinical examination and anamnesis. Plaque index, gingival index, pocket depth, bleeding on probing and clinical attachment level were recorded clinically. The teeth indicated for extraction were collected. Cd, Pb, Ni, Cr and Fe depositions on teeth were measured by ICP-OES device. Kolmogorov-Smirnov, Student T, Mann Whitney U, One way ANOVA, Kruskal Wallis, Ki-Kare, Pearson, and Spearman tests were performed for the statistical analysis. Results: Smoking increases the accumulation of heavy metals such as Cd, Ni, Cr, and Pb. The Pb level was higher in both the smoking group and the periodontitis group, compared with the control group. Fe levels were found high in the non-smoking healthy group. Cr and Fe levels were found higher in women while Cd level was higher in men. Positive correlations were found between Pb and plaque index, gingival index, pocket depth and bleeding on probing; and also between Ni and plaque index. ( p=0.000, p=0.009, p=0.025, p=0.011, p=0.019) Conclusion: In conclusion, our study explored the connection between heavy metal deposition on tooth surfaces and the disease-causing potential of smoking. Smoking has been identified as a significant factor in the increased accumulation of heavy metals, including Cd, Ni, Cr, and Pb. The higher Pb levels seen in both the smoking and periodontitis groups, compared to the control group, suggest a potential link between Pb accumulation and periodontal health. Additionally, differences based on gender were observed, with women showing higher Cr and Fe levels, while Cd levels were more elevated in men. The positive correlations between Pb and various periodontal indices, along with the correlation between Ni and plaque index, shed light on the potential influence of heavy metal deposition on periodontal health. While our findings enhance our understanding of the interplay between smoking, heavy metal deposition, and oral health, further research is needed to fully comprehend the underlying mechanisms. Such insights could lead to interventions aimed at minimizing the adverse effects of heavy metal accumulation on oral health.

To compare the average values of fractal and radiomorphometric analysis measurements in patients using overdenture prostheses supported by two or three imp