Introduction:Endodontic restoration becomes a challenging task for the clinician because of severe loss of coronal tooth structure owing to trauma, caries, restorative, and endodontic procedures. The restoration of these teeth requires the use of a post and core as individual units or as abutment supports for fixed or removable restorations in a predictable long-term manner.Aim: To compare and assess the compressive bond strength of glass, quartz, and carbon fiber posts restored with porcelainfused-to-metal (PFM) crown. Materials and methods:A total of 45 upper central incisor teeth having straight root canals, similar anatomically root segments, and fully developed apices were selected. Teeth were divided into three groups of 15 teeth after endodontic treatment. Group I: Teeth inserted with the prefabricated glass fiber post. Group II: Teeth inserted with the quartz fiber post. Group III: Teeth inserted with carbon fiber post. The posts were placed and core was fabricated using composite restoration followed by PFM crown cementation using adhesive resin. Compressive load required to fracture the tooth was measured using a universal loading machine. The difference between the variables was assessed by one-way analysis of variance, followed by Tukey's post hoc test. Results:The compressive strength exhibited by carbon fiber posts was highest with a mean of 668.33 ± 26.397, followed by quartz fiber post (635.80 ± 30.390). Least compressive strength was exhibited by glass fiber post (567.53 ± 26.632). An analysis of variance shows statistically highly significant difference (p < 0.005) among the posts used. Conclusion:This study concluded that the carbon fiber posts had higher compressive strength than other quartz, glass fiber posts.Clinical significance: Endodontic treatment results in loss of a significant part of the tooth structure. Posts restore these teeth and provide retention.
Background:In the 21st century, we live longer and a more active life. However, while our adult longevity continues to extend, society does not welcome a tired and aged appearance. We wish to continue to look as young as possible. Most facial rejuvenation techniques such as surgery and injection of collagen, silicone, or autogenous fat do not address the fact that these lines are functional, i.e. they do not target the cause of hyperfunctional lines: the underlying facial mimetic musculature.Aim:To find the efficacy of Botulinum toxin for the treatment of hyperfunctional lines of the forehead.Materials and Methods:The present study consisted of 25 subjects in the age group of 25–65 years with forehead wrinkles, who visited the Department of Oral and Maxillofacial Surgery, CIDS, Virajpet. The materials used for Botulinum toxin treatment were Botulinum toxin A, a standard freezer, sterile saline solution, alcohol swabs, and insulin syringes with 30 gauge needles.Results:Of the 25 patients, 21 patients showed satisfactory improvement of their hyperfunctional facial lines within 72 h. Maximum improvement was noted in the age group of 25–40 years, while the older age group of 50–65 years showed less improvement. Maximum improvement was seen in type 5 skin, followed by type 4 and type 3 skin. Type 2 skin showed the least improvement.Conclusion:We conclude that Botulinum toxin A is a safe and efficacious method of nonsurgically eliminating hyperfunctional facial lines of the forehead in the aesthetic patient for a period of 4–6 months.
Aim: To assess the different polishing systems on the color stability and surface roughness of nanocomposite resins. Materials and methods: A total of 60 composite resin samples were fabricated. The Tetric N Ceram composite was compacted into the custommade cylindrical metallic mold of internal diameter 6 × 6 mm. Based on the polishing system used, sixty samples were divided into three groups. Group I: Sof-Lex, group II: Shofu super-snap polishing disks, and group III: Astropol. The samples in each group were immersed in beverage, that is tea. Spectrophotometer was used to measure the color of the samples after staining period. And surface profilometer was used to measure all surface roughness. Results: Of the three groups, Sof-Lex polishing group reported the least mean value of 0.458 ± 0.118 succeeded by Astropol polishing group (0.494 ± 0.121) and Shofu super-snap polishing group (0.540 ± 0.031) having the higher mean value. Statistically significant difference was found between the different polishing systems calculated by analysis of variance. And color change between the groups was not statistically significant. Conclusion:We conclude that a composite polished with Sof-Lex was a superior polish compared to Astropol polishing group and Shofu supersnap polishing group. There was only a minimal difference in the color stability of the composite between the groups. Clinical significance: Excellent finishing and polishing are the critical steps to enhance the esthetics and longevity of the composite restorations. High strength, fracture toughness, surface hardness, optimum polishability, and gloss are the functional properties which need assessment while a resin composite is used for restoration.
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