Aim: The aim of the study was to investigate whether the surface geometry or topography of implant abutments affects the retentive strength of prosthesis cemented with zinc phosphate on standard machined, sandblasted, and grooved implant abutments and to compare the results between them. Materials and Methods: Fifteen similarly shaped implant abutments (MDcpk61; MIS Implant Technologies Ltd.,) (height 6.0 mm and 6-degree taper) were divided into three groups (n = 05): Group I – standard machined abutments without grooves, Group II – sandblasted abutments (same as Group I but sandblasted with 50 μ aluminum oxide), and Group III – abutment with prefabricated circumferential grooves. Further in these groups of 15 abutments, 5 abutments each are to be taken to check the retentive force of zinc phosphate cement. Fifteen identical cast copings was prepared to fit all 15 abutments. The castings will be cemented to each group of abutments with an above-mentioned luting agent. After thermal cycling and storage for 6 days in a water bath, a retention test is to be done with a tensile testing machine (Instron) (5 mm/min) and retentive forces will be recorded. Data will be subjected to one-way ANOVA test and Student's t-test. Results: For zinc phosphate cement, F = 30.53 (>3.59 for P = 0.05) shows a statistically significant difference between all the three groups. Conclusion: Circumferential grooves on implant abutments give better retention when compared with standard machined (plain) and sandblasted abutments despite marked difference. Clinical Significance: Retention of restoration depends on the surface of the abutment as well as the luting agents used. Incorporation of retentive grooves can enhance retention of prosthesis, especially in situation of short abutments.
To compare the clinical and histopathological presentation of oral leukoplakia among different forms of tobacco users. Material and Methods: This study was carried out among 300 patients with oral leukoplakia, analyzing the corresponding clinical factors and histopathological findings, different forms of tobacco usage and assessing associations between the different clinical presentations and epithelial dysplasia. Results: Out of a total of 300 subjects, most (87.33%) of the subjects were males, among 138 tobacco chewers, maximum (60.87%) were having homogenous leukoplakia, among 85 tobacco smokers, maximum (61.18%) were seen with homogenous leukoplakia and among 77 subjects having mixed habit, maximum of 51.95% were diagnosed as having homogenous leukoplakia. The association between clinical type of leukoplakia and habit type was statistically not significant (Chi-square= 5.0806, p=0.5336). Majority of the cases which were diagnosed clinically diagnosed as leukoplakias presented a histological diagnosis of hyperkeratosis (45%) and mild epithelial dysplasia (33.33%). The association between histopathological type of leukoplakia and habit type was found to be statistically significant (Chi-square= 23.2166, p=0.0007). Conclusion: Most of the patients were having homogenous leukoplakia and majority of the cases which were diagnosed clinically diagnosed as leukoplakias presented a histological diagnosis of hyperkeratosis, mild epithelial dysplasia.
Normal aginga) In normal aging, you can expect many skills and abilities to be intact or only slightly different.
Aim: The aim of this research was to identify the antimicrobial effectiveness of three different mouthwashes on periodontal pathogenic microorganisms. Materials and Methods: 2 periodontal disease-causing microorganisms, i.e., Aggregatibacter actinomycetemcomitans, and Porphyromonas gingivalis, were chosen for this investigation. Prior to commencing this research, a variety of branded and commercially obtainable mouthwashes were procured. Three oral rinses, namely HiOra, Hexidine, and Amflor, were chosen for the current research. The subculture of A. actinomycetemcomitans as well as P. gingivalis was performed by subjecting them to incubation for 48 to 72 hours at 35–37°C. The disk diffusion method was employed to evaluate the antibacterial efficiency of the extract in opposition to the pathogens tested. The zone of inhibition was calculated in millimeters. The mean value of every sample was documented. Results: Hexidine oral rinse in pursuit by Amflor as well as HiOra oral rinse exhibited the highest zone of inhibition in opposition to A. Actinomycetemcomitans and P. gingivalis. The differences amid the groups were statistically significant with a P value < 0.001. Conclusion: The current research concluded that amid the three different oral rinses employed in the current research, Hexidine oral rinse exhibited greatest antimicrobial effectiveness versus Amflor and HiOra mouthrinse.
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