Aims and Objectives:To evaluate the effect of saliva contamination on the shear bond strength of a new two-step self-etch adhesive (P90 system adhesive) to dentin and to determine the effect of contaminant removing treatments on the recovery of bond strengths.Materials and Methods:The buccal surfaces of 40 human premolars were ground to expose dentin. The specimens were randomly divided into four groups. Group 1 is uncontaminated and serves as the control group. Further groups were divided based on the step in the bonding sequence when the contamination had occurred as follows: Group 2 (primer, saliva contamination, rinse and dry), group 3 (after procedure of group 2, reapplication of primer), and group 4 (after procedure like in control group, saliva contamination, rinse and dry). Filtek P90 composite resin cylinders of 3 mm diameter and 3 mm length were fabricated on the surfaces. Shear bond strength testing was done in an Instron Universal Testing Machine and the data were subjected to one-way analysis of variance (ANOVA) and Student's t-test.Results:With P90 system adhesive, group 2 and group 4 showed lower shear bond strength than group 1 (control) and group 3 (P < 0.05).Conclusion:Saliva contamination significantly decreased the shear bond strength of the adhesive to dentin.
Endemic fluorosis is widely prevalent in India where sixty million of the population in 200 districts of 20 states is at risk. Already six million Indians are disabled because of fluorosis and a tenth of them might develop neurological sequelae. Fluorosis in humans is predominantly dental and skeletal. This study was done in September 2011 to know the level of dental fluorosis in primary school children in urban field practice area of S.N.Medical College, Bagalkot and to associate between malnutrition and jowar consumption. Socio demographic profile and source of drinking water data were collected. Anthropometric measurements were recorded and body mass index percentile calculated. Dental fluorosis was assessed according to Dean's fluorosis index. Drinking water samples were analyzed for total hardness and fluoride by Orion PH meter 920 A model with fluoride pH electrode Out of 227 children enrolled from standard I to VII (6 years to 12 years of age) in the Government Primary School, 171 (75.33%) were present on the day of the study It was observed that 102 students (59.65%) had Dental fluorosis and in them 72(70.59%) were under weight. Water analysis revealed that samples from 5 borewells were not potable.
Aim:The objective of the present investigation is to compare the accuracy of two methods of age estimation, Cameriere's European formula and Demirjian's method, in estimating the age of mixed-dentition children in Telangana. Materials and methods: Digital orthopantomographs (OPGs) of 36 children between the age of 7 years and 12 years were subject to analysis. All the OPGs were analyzed for dental age using both Cameriere's and Demirjian's methods for mixed dentition. Chronological age was calculated by subtracting the date of births from the date on which the OPGs were taken. Statistical analysis: descriptive analysis was performed. The accuracies of both the methods (Cameriere's and Demirjian's) were evaluated by calculating the mean prediction error. Wilcoxon signed-rank test was performed for both methods of dental age estimation with chronological age and for boys and girls. Significance threshold was set at 5%. Results: Cameriere method resulted in a mean prediction error of 0.579 for girls and 0.483 for boys. Demirjian's method resulted in a mean prediction error of 2.228 for girls and 2.046 for boys.
Conclusion:In conclusion, as far as accuracy is concerned, Cameriere's European formula proved to be more accurate, according to the current investigation. Significance: The significance of age estimation is reflected in various fields such as pediatric endocrinology, orthodontics, law, anthropology, archeology, and forensics where identification of unascertained human bodies is required (crime investigations, mass disasters). Demirjian's method is commonly employed for dental age estimation in pediatric dentistry, orthodontics, and forensic dentistry. Cameriere's method may serve as a more accurate and reliable method for dental age estimation.
Background: Microbial complexity of biofilm indicate that streptocouss mutans and candida species lives in symbiotic relationship. The combination of antiplaque agent with antifungal agent can significantly influence the dental plaque. There is a search for effective antimicrobial agent in dentifrice formulation. chlorhexidine diundecylinate((CHUA) is novel antimicrobial agent introduced by salicylates and chemicals pvt ltd, has shown extended antimicrobial properties and are comparable to triclosan Objectives: To evaluate and compare the plaque and gingivitis reducing efficacy of chlorhexidine Diundecylinate (salibact) and triclosan based dentifrice Material and methods: A double blind randomized controlled trial was conducted among 86 subjects who are randomly divided into two groups. Experimental group received dentifrice containing chlorhexidine Diundecylinate with antidiscoloration system (salibact 0.1%+ ADS) and control group received 0.3% triclosan containing dentifrice.Plaque and gingival index scores were compared between baseline and six weeks. Results: There is a significant difference between mean plaque index scores between salibact and triclosan containing dentifrice p(0.032)(0.015)<0.05 respectively. Mean plaque and gingivitis reduction was found to be better for salibact compared to triclosan Conclusion: The study results provide some evidence that CHUA (Salibact) has definite role in plaque reduction and has better efficacy compared to triclosan. The new ingredient chlorhexidine diundecylenate seems to be a better choice as an efficient antimicrobial agent for the oral care dentifrice formulations.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.