Purpose: To study and compare the sagittal condylar angles set on a Hanau articulator using intra-oral protrusive records to angles found using a panoramic radiographic image in male and female dentulous patients. Materials and Methods: A total of 20 subjects (10 male and 10 female) Aged between 21 to 30 years, free of signs and symptoms of temporomandibular joint disorders and with intact dentition were selected. Impressions were made using irreversible hydrocolloid and all dental stone casts (type-III), were mounted on a Hanau articulator using a spring bow type of face bow. For all patients, the protrusive records were made with polyether bite registration paste when the mandible was moved forward by approximately 4-6 mm, using compound jig. All procedures for
Original Research Article
Introduction
As civilization has progressed, there has been continued refinement of materials available for dental practice. The applications of resins have been extended to increased practical uses in numerous areas of prosthetic and restorative dentistry. Certain significant alterations in the technique of manipulation and nature of the dental product have influenced the range of application in dentistry. The present study was done to measure and compare the fracture strength of heat polymerized poly-methyl-methacrylate (PMMA) resin reinforced with fibers of glass, polyaramid, and nylon.
Materials and methods
The present study was conducted in vitro on 40 PMMA denture base resin specimens. Specimens were divided into four subgroups with ten specimens each and tested for transverse strength using universal testing machine.
Results
In group I, the transverse strength mean value was 67.82 MPa. In group II, the transverse strength mean value was 59.47 MPa. In group III, the transverse strength mean value was 66.87 MPa, while in group IV, the transverse strength mean value was 66.47 MPa.
Conclusion
Incorporation of 4% weight glass fibers in loose form significantly increased the transverse strength of denture base PMMA, while 4% of polyaramid fiber in random distribution significantly increased the transverse strength of denture base PMMA.
How to cite this article
Kumar VSG, Nigam A, Naeem A, Gaur A, Pandey KK, Deora A. Reinforcing Heat-cured Polymethyl- methacrylate Resins using Fibers of Glass, Polyaramid, and Nylon: An in vitro Study. J Contemp Dent Pract 2016; 17(11):948-952.
Aim and Objectives: This study is determined the vertical distance between lingual frenum and incisal edge of mandibular central incisors in dentulous subject and edentulous denture wearer subjects and their variation in different age groups and sex. Materials and Methods: This study involved 120 dentulous subjects (60 men, 60 women) and 20 complete denture wearers. Depending upon the age, the dentulous subjects were divided into three groups. Each group consisted of 40 subjects (20 men, 20 women). Group I consisted of 20-30 yr age, group II 30-4 0yr age and group III consisted of more than 40 yr age. Mandibular impressions of dentulous and denture wearers were made with irreversible hydrocolloid and cast retrieved. The vertical distance between the anterior attachment of lingual frenum and incisal edges of the mandibular central incisors for both the dentulous and edentulous subjects was measured on the casts with the help of dental surveyor. Data were tabulated and stastically analysed.
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.