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Smoking and chewing tobacco carry significant risks for the development of oral cancer and premalignant lesions. The present study was conducted to find the prevalence of tobacco-related habits in Hazaribagh population and its association with oral mucosal lesion.The present study was carried out on patients who visited the Department of Oral Medicine And Radiology, Hazaribagh College of Dental Sciences And Hospital. A total of 5,000 subjects were screened for tobacco-related habits and associated mucosal changes. Detailed clinical history about tobacco-related habits was obtained. Oral mucosal lesions were screened using the WHO format for diagnosis of oral lesions. The findings were tabulated and analyzed statistically.Of the 5,000 subjects enrolled for the study, 1,085 (21.7%) used tobacco in some forms. Habit of smoking tobacco was present among 273 (25.2%) and using smokeless tobacco among 811 (74.7%) individuals. Tobacco pouch keratosis (46.1%) was found to be most common lesion, followed by oral submucous fibrosis (OSMF) (16.1%), lichenoid reaction (14.1%), smokers palate/melanosis (12.2%), leukoplakia (7.2%), erythroplakia (2.3%), and oral cancer in (2%).The results provide insight into prevalent tobacco habits and associated oral mucosal lesions in Hazaribagh population. These may act as baseline data for the formulation of preventive programs and help future studies explore the prevalence of tobacco-associated lesions in vulnerable populations. Current knowledge, including findings from the present study, about the prevalence of tobacco use and various oral lesions associated with it may help primary health care physicians to promote among patients visiting them the awareness about the adverse effects of tobacco consumption and treatment options available for tobacco-related lesions at the early stage.

Background Cheiloscopy is the study of furrows and grooves present on the red part, or the vermilion border of the human lips. The type of groves is unique for an individual and can be used for person identification. Aim The aim of this study is to ascertain whether the uniqueness of lip print (LP) can help in identifying a person. In addition to evaluate the comparison of LP types and blood groups was taken up to see if there is any correlation between the two. Materials and methods A cross-sectional study was conducted on 200 participants (77 males and 123 females), aged between 25 to 45 years, to determine any correlation between LP types and blood groups. These lip patterns were analyzed and interpreted using Tsuchihashi's classification and later associated blood group matching was performed to determine the predominant LP type with the ABO and Rh blood grouping system. Results The present study showed a positive correlation between LP pattern and blood group among males and females. Thus, distribution of LP patterns, and ABO blood groups might help in the identification of an individual. Conclusion Since LP and blood group are unique for a person. Hence, cheiloscopy along with blood group can play a vital role in person identification.

Periapical granuloma and periapical cysts develop as a sequela of inflammation of dental pulp, usually a consequence of an infected root canal. Mast cells (MCs) have most frequently been implicated in the pathophysiology of periapical lesions such as periapical granulomas and cysts.The present study was undertaken to emphasize the presence and quantification of MCs in periapical lesions (granulomas and cysts) using toluidine blue stain, with an aim to elucidate their role in the pathogenesis of these lesions.The study comprised a total of 55 previously diagnosed cases (30 cases of radicular cyst and 25 cases of periapical granuloma) selected from the departmental archives. The MCs were quantified in all the sections in the three zones, namely the epithelial, subepithelial, and deeper connective tissue zones. The results were sent for statistical analysis.Wilcoxon pairedA statistically significant difference was observed between the two lesions in all the three zones, i.e., epithelial, subepithelial, and in deeper connective tissue zone withAlthough MCs were present in all the three zones of both periapical cysts and granuloma, they were predominantly observed in radicular cysts than in periapical granuloma. This suggests a significant role of MC in initiation, development, and progression of these periapical lesions.

Functionally Gradient Materials (FGM) are considered as a novel concept to implement graded functionality that otherwise cannot be achieved by conventional homogeneous materials. For biomedical applications, an ideal combination of bioactivity on the material surface as well as good physical property (strength/toughness/hardness) of the bulk is required in a designed FGM structure. In this perspective, the present work aims at providing a smooth gradation of functionality (enhanced toughening of the bulk, and retained biocompatibility of the surface) in a spark plasma processed hydroxyapatite-alumina-zirconia (HAp-Al2O3-YSZ) FGM bio-composite. In the current work HAp (fracture toughness similar to 1.5 MPa.m(1/2)) and YSZ (fracture toughness similar to 62 MPa.m(1/2)) are coupled with a transition layer of Al2O3 allowing minimum gradient of mechanical properties (especially the fracture toughness similar to 3.5 MPa.m(1/2)).The in vitro cyto-compatibilty of HAp-Al2O3-YSZ FGM was evaluated using L929 fibroblast cells and Saos-2 Osteoblast cells for their adhesion and growth. From analysis of the cell viability data, it is evident that FGM supports good cell proliferation after 2, 3, 4 days culture. The measured variation in hardness, fracture toughness and cellular adhesion across the cross section confirmed the smooth transition achieved for the FGM (HAp-Al2O3-YSZ) nanocomposite, i.e. enhanced bulk toughness combined with unrestricted surface bioactivity. Therefore, such designed biomaterials can serve as potential bone implants. (C) 2012 Elsevier B.V. All rights reserved.

Bacterial infection remains an important risk factor after orthopedic surgery. The present paper reports the synthesis of hydroxyapatite-silver (HA-Ag) and carbon nanotube-silver (CNT-Ag) composites via spark plasma sintering (SPS) route. The retention of the initial phases after SPS was confirmed by phase analysis using X-ray diffraction and Raman spectroscopy. Energy dispersive spectrum analysis showed that Ag was distributed uniformly in the CNT/HA matrix. The breakage of CNTs into spheroid particles at higher temperatures (1700℃) is attributed to the Rayleigh instability criterion. Mechanical properties (hardness and elastic modulus) of the samples were evaluated using nanoindentation testing. Ag reinforcement resulted in the enhancement of hardness (by ∼15%) and elastic modulus (∼5%) of HA samples, whereas Ag reinforcement in CNT, Ag addition does not have much effect on hardness (0.3 GPa) and elastic modulus (5 GPa). The antibacterial tests performed using Escherichia coli and Staphylococcus epidermidis showed significant decrease (by ∼65–86%) in the number of adhered bacteria in HA/CNT composites reinforced with 5% Ag nanoparticles. Thus, Ag-reinforced HA/CNT can serve as potential antibacterial biocomposites.

Introduction: Cyclin D1 oncogene is a key regulator of cell cycle progression associated with various human malignancies. Aim: To establish the prognostic significance of cyclin D1 in oral squamous cell carcinoma (OSCC) and to correlate its association with clinicopathological parameters. Materials and Methods: A retrospective study was carried out on 50 previously histopathologically diagnosed, formalin-fixed, paraffin embedded (FFPE) tissue samples of OSCC. Immunohistochemical analysis was performed in 50 cases of different grades of OSCC using a commercially available monoclonal anti-cyclin D1 antibody. Statistical Analysis Used: All the compiled data was statistically analyzed using Chi-square and Mann-Whitney test. P values of