Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 32 for “"Human teeth"”.
-
Investigation into DNA recovered from human teeth for forensic applications
… individuals in forensic mortuaries. When human remains are severely compromised, hard tissues may provide the only DNA source for identification. The QIAamp® DNA Investigator Kit is used in forensic laboratories worldwide, including in South Africa, to extract DNA for identification …
-
An Organ Culture Technique for Maintaining the Pulp Tissue of Intact Human Teeth
… explant size. The test tissue was the adult human tooth.</p> <p>In order to maintain the pulp tissue of the intact human tooth in organ culture, special precautions were taken to prevent internal necrosis and to allow diffusion of nutrients and waste products. Using aseptic technique, a …
-
New Attachment of Connective Tissues to Human Teeth Involved in Chronic Periodontal Disease : A Histologic Study
… evidence demonstrating this phenomenon in humans. Garrett (1978) has shown that citric acid, after application to root planed tooth surfaces, produces a four micron wide demineralized zone which is characterized by exposed collagen fibers. It is impossible that this demineraIization may …
-
STABLE ISOTOPE RATIOS AS A PROXY FOR HUMAN GEOGRAPHIC PROVENANCE: BIOGEOGRAPHICAL EVIDENCE FROM THE 2H, 18O, AND 13C SIGNATURES IN MODERN HUMAN TEETH
… paramount to a forensic investigation in which human remains have been recovered and must be identified. Due to increasing global mobility in the world's populations, it is not inconceivable that an individual might die far away from his or her home. Pinpointing an individual's geographic origin …
-
Histopathological Response of the Human Tooth to an Intrapulpal Pin Implantation
… the study of histopathological response of human teeth to the intentional implantation of threaded, stainless steel, gold plated pins into the vital pulp.</p> <p>Pins of several types are currently used in several aspects of restorative and periodontal dentistry. In some cases there may be …
-
Obturation with gutta percha of greater taper
… percha points.;Sixty eight canals of extracted human teeth were instrumented with ProFile Series 29, 0.06 taper rotary files. Canals were obturated as follows: (Group 1) cold lateral condensation using an ISO size master gutta percha point; (Group 2) cold lateral condensation using a DiaPro 0.04 …
-
Pain Threshold of Human Anterior Teeth to Pressure Stimulation
… a method of measuring the pain threshold of human teeth and to study the relationship of variables such as age and sex with pain threshold of teeth. A procedure was developed to measure the pain threshold to mechanical stimulation applied as a force with a push gauge. An analysis of the data …
-
The in vitro effect of a tooth bleaching agent on coffee and wine stained teeth
… visual methods. Methodology: Twenty specimens of human teeth will be collected, polished and divided into two groups. A baseline color measurement by the CIE L* a* b* with a spectrophotometer against a white background will be taken before one group is immersed in coffee and the other in red wine …
-
Vibrations of high-speed dental handpieces measured using laser vibrometry
… (50 to 200 g) whilst cutting into extracted human teeth. Results were investigated using analysis of variance (ANOVA) at a significance level of p = 0.05, and post hoc tests. Results: Maximum handpiece vibrations were less than 4 μm. Significant differences were found between some handpiece …
-
A selection of biomechanical research problems : from modeling to experimentation
… the mechanical interaction between the human teeth and some processed food products during mastication, which is a routine but crucial daily activity of a human being. Chapter 4 looks at a problem within the field of surgery. In this chapter the stability and reliability of two different …
-
Apical and radial pH diffusion through root dentin from five modern intracanal medicaments: a twelve-week evaluation of alkaline dynamics
… METHODS: Sixty-six extracted single-rooted human teeth were prepared using the ProTaper Ultimate rotary system to an F3 finishing file. Specimens were randomly allocated to five medicament groups: purified water, propylene glycol, methylcellulose in water, silicone oil, or calcium silicate. …
-
Finite Coupled Torsion and Inflation of Functionally Graded Mooney-Rivlin Cylinders with and without Residual Stresses
… vary in one or more directions. Examples include human teeth, seashells, bamboo stems and human organs, where the varying volume fraction of fibers and their orientations optimize functionality. Deformations of such structures typically involve bending, stretching, and shearing. An everyday …
-
Fracture resistance of calcium hydroxide-treated teeth filled with water- and PBS-mixed MTA
… dental caries are the main reasons why permanent teeth with immature, thin-walled roots lose their vitality and require endodontic treatment. Currently there are three endodontic treatment options to treat teeth with irreversibly damaged dental pulps and incomplete root formation. These are: pulp …
-
Intentional Implantation of Pins in the Dental Pulp Under Clinical Conditions
… toward the study of the histological response of human teeth to the intentional implantation of threaded stainless steel gold-plated pins.</p> <p>Many different types of pins are currently used in several aspects of restorative and periodontal dentistry. In some cases there may be unintentional …
-
Estudo histopatológico da polpa de dentes unirradiculares de humanos, portadores de doença periodontal envolvendo o ápice radicular
… of the dental pulp, of periodontally involved human teeth. Twenty two patients, ranging in age from 22 to 62, were given through clinical and roentgenographic examinations. The sample include 30 single rooted teeth with no carie, abrasion, attrition, erosion or restoration. Radiographically, …
-
Fluoride varnish concentration gradient effects measured by quantitative light fluorescence
… caries environment and fluoride varnish. Human teeth specimens were subjected to a caries challenge and treated with a sample of fluoride varnish from one of five categories: Duraphat stored horizontally and vertically for one week; Duraflor stored horizontally and vertically for one week; …
-
Histopathological Changes in Dental Pulp Associated with Periodontitis: A Systematic Review and Meta Analysis
… July 2024. Eligible studies focused on permanent human teeth with control groups. Study quality was assessed using the Joanna Briggs Institute risk of bias tool for case-control studies. Meta-analysis was performed using random-effects models to estimate pooled prevalence and odds ratio, with …
-
pH Change Following Smear Layer Removal and Final Rinse with 95% Ethyl Alcohol Using Calcium Hydroxide Medicament or BC Sealer
… BC sealer. Methods: 80 single rooted extracted human teeth were decoronated with a standardized root length of 15mm. All root were instrumented to size F4 using the ProTaper Gold file system. Defects were made on the facial and lingual root surfaces to remove cementum. Teeth were then randomized …
-
THE USE OF CT ANALYSIS TO ASSESS THE AGES OF A MODERN HUMAN TOOTH SAMPLE: A COMPARISION WITH DENTAL ATTRITION AND THE LAMENDIN METHOD
An analysis of 81 contemporary adult human teeth was conducted in order to determine which of three methods best determines age at death. The teeth were loaned from the University of Tennessee body farm to the University of Michigan’s Biomedical Research Laboratory and were comprised of central …
-
THE USE OF CT ANALYSIS TO ASSESS THE AGES OF A MODERN HUMAN TOOTH SAMPLE: A COMPARISION WITH DENTAL ATTRITION AND THE LAMENDIN METHOD
An analysis of 81 contemporary adult human teeth was conducted in order to determine which of three methods best determines age at death. The teeth were loaned from the University of Tennessee body farm to the University of Michigan’s Biomedical Research Laboratory and were comprised of central …
Page 1 of 2