RESUMO
Background: 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. Methodology: 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. Results: 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%). Conclusion: 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.
RESUMO
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.
RESUMO
Background: 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. Aims: 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. Materials and Methods: 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. Statistical Analysis: Wilcoxon paired t-test and Mann-Whitney U test were applied for intra- and intergroup comparison MCs in different zones of periapical granulomas and radicular cyst, respectively. Results: A statistically significant difference was observed between the two lesions in all the three zones, i.e., epithelial, subepithelial, and in deeper connective tissue zone with P = 0.001. Conclusion: Although 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.
RESUMO
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.