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- Bond strength (4)
- In vitro (2)
- Indirect bonding (2)
- Porcelain (2)
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- Adhesive (1)
- Archwires (1)
- Bands (1)
- Bitemarks (1)
- Brackets (1)
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- Copper-nickel-titanium (1)
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- Curriculum (1)
- DSC (1)
- Debonding (1)
- Deciduous tooth (1)
- Dental analysis (1)
- Dental education (1)
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- Dental school curriculum (1)
- Evidence-based dentistry (1)
- Evidence-based practice (1)
- FES (1)
- Galvanic corrosion (1)
- Gloss (1)
- High-fusing (1)
- Impact (1)
- Implants (1)
- International Journal of Engineering Research (IJER) (1)
Articles 1 - 14 of 14
Full-Text Articles in Medicine and Health Sciences
Analysis Of Stresses In Mandible And Skull Under Angular Impact, Dr. Shobha E S, Dr. Suresh Nagesh, Dr. H P. Raghuveer, Mr. Vinay K. S
Analysis Of Stresses In Mandible And Skull Under Angular Impact, Dr. Shobha E S, Dr. Suresh Nagesh, Dr. H P. Raghuveer, Mr. Vinay K. S
Innovative Research Publications IRP India
Finite element analysis has gained a significant attention in the field of biomechanics. The versatility of finite element analysis is the major reason behind its implementation and adoption has made the study of biomechanics much easier and simpler. FEA, as a tool has helped in analyzing the various organs in human body in different loading conditions. Be it Orthopedic,Maxillofacial fractures,Orthodontics, Prosthodontics, hemodynamics, it is finding its applications in all areas of biomechanics. In this paper, one such study has been carried out to understand the behavior of skull and mandible under inclined impacts. Skull is one of the highly complicated …
Force To Debond Brackets From High-Fusing And Low-Fusing Porcelain Systems, Nicholas P. Ferri, Theodore Eliades, Spiros Zinelis, T. Gerard Bradley
Force To Debond Brackets From High-Fusing And Low-Fusing Porcelain Systems, Nicholas P. Ferri, Theodore Eliades, Spiros Zinelis, T. Gerard Bradley
T. Gerard Bradley
The purpose of this study was to test the hypothesis that porcelain surface finishing, ie, low- and high-fusing porcelain, has an effect on the amount of force required to debond orthodontic brackets. A total of 20 high-fusing and 20 low-fusing porcelain specimens were prepared, polished, and bonded with standard edgewise brackets using a suggested porcelain bonding protocol. The brackets were debonded with a universal testing machine at shear mode. Resin removal was performed using two methods: a multifluted carbide bur with and without the use of Sof-Lex polishing discs. Representative specimens were studied under a scanning electron microscope before and …
Changes In Orthodontic Treatment Modalities In The Past 20 Years: Exploring The Link Between Technology And Scientific Evidence, T. Gerard Bradley
Changes In Orthodontic Treatment Modalities In The Past 20 Years: Exploring The Link Between Technology And Scientific Evidence, T. Gerard Bradley
T. Gerard Bradley
Statement of the issue: Is there a link between the many perceived advances in orthodontic techniques/therapy and science in the past 20 years? The purpose of this paper is to take five topics and match the perceptions with the scientific evidence. The variety of appliances and the swings in treatment philosophy have been dramatic, including the swing from extraction to non-extraction therapy, the introduction of space-age wires, appliances that grow mandibles, the introduction and extraordinary growth of Invisalign, and reduced friction brackets to reduce treatment time, all with claims by manufacturers of better results than ever before. The focus is …
A Comparison Of Bond Strength Between Direct- And Indirect-Bonding Methods, Brandon James Linn, David W. Berzins, Virendra B. Dhuru, T. Gerard Bradley
A Comparison Of Bond Strength Between Direct- And Indirect-Bonding Methods, Brandon James Linn, David W. Berzins, Virendra B. Dhuru, T. Gerard Bradley
T. Gerard Bradley
The purpose of this study was to evaluate and compare the shear bond strength and the sites of bond failure for brackets bonded to teeth, using two indirect-bonding material protocols and a direct-bonding technique. Sixty extracted human premolars were collected and randomly divided into three groups. The direct-bonded group (group 1) used a light-cured adhesive and primer (Transbond XT). One indirect-bonded group (group 2) consisted of a chemical-cured primer (Sondhi Rapid Set) and light-cured adhesive (Transbond XT), whereas the other group (group 3) used a light-cured primer (Orthosolo) and adhesive (Enlight LV). Forty hours after bonding, the samples were debonded. …
Do The Mechanical And Chemical Properties Of InvisalignTm Appliances Change After Use? A Retrieval Analysis, T. Gerard Bradley, Lauren Teske, George Eliades, Spiros Zinelis, Theodore Eliades
Do The Mechanical And Chemical Properties Of InvisalignTm Appliances Change After Use? A Retrieval Analysis, T. Gerard Bradley, Lauren Teske, George Eliades, Spiros Zinelis, Theodore Eliades
T. Gerard Bradley
Aim: To investigate the mechanical and chemical alterations of Invisalign appliances after intraoral aging. Materials and methods: Samples of Invisalign appliances (Align Technology, San Jose, California, USA) were collected following routine treatment for a mean period of 44±15 days (group INV), whereas unused aligners of the same brand were used as reference (group REF). A small sample from the central incisors region was cut from each appliance and the buccal surface was analysed by attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy (n = 5). Then the appliances were cut (n = 25) and embedded in acrylic resin, ground/polished in a …
Porcelain Surface Roughness, Color And Gloss Changes After Orthodontic Bonding, Jacob Jarvis, Spiros Zinelis, Theodre Eliades, T. Gerard Bradley
Porcelain Surface Roughness, Color And Gloss Changes After Orthodontic Bonding, Jacob Jarvis, Spiros Zinelis, Theodre Eliades, T. Gerard Bradley
T. Gerard Bradley
The purpose of this study was to evaluate the alteration in surface characteristics after orthodontic debonding of two types of porcelain systems commonly used in prosthetic dentistry. For this purpose, porcelain specimens were fabricated from low-fusing (n = 20) and high-fusing (n = 20) porcelain. The baseline surface roughness, color, and gloss were evaluated using profilometry, color shade index, and gloss study. All specimens were bonded with brackets and debonded using a testing machine at a rate of 0.1 mm/minute crosshead speed. The porcelain surfaces were polished using a 12-fluted carbide composite removal bur (low-fusing, n = 20; high-fusing, n …
Bond Strength Of Direct And Indirect Bonded Brackets After Thermocycling, Jacob Daub, David W. Berzins, Brandon James Linn, T. Gerard Bradley
Bond Strength Of Direct And Indirect Bonded Brackets After Thermocycling, Jacob Daub, David W. Berzins, Brandon James Linn, T. Gerard Bradley
T. Gerard Bradley
Thermocycling simulates the temperature dynamics in the oral environment. With direct bonding, thermocycling reduces the bond strength of orthodontic adhesives to tooth structure. The purpose of this study was to evaluate the shear bond strengths (SBS) of one direct and two indirect bonding methods/adhesives after thermocycling. Sixty human premolars were divided into three groups. Teeth in group 1 were bonded directly with Transbond XT. Teeth in group 2 were indirect bonded with Transbond XT/Sondhi Rapid Set, which is chemically cured. Teeth in group 3 were indirect bonded with Enlight LV/Orthosolo and light cured. Each sample was thermocycled between 5°C and …
Shear Bond Strength Comparison Between Two Orthodontic Adhesives And Self-Ligating And Conventional Brackets, Rodney G. Northrup, David W. Berzins, T. Gerard Bradley, William I. Schuckit
Shear Bond Strength Comparison Between Two Orthodontic Adhesives And Self-Ligating And Conventional Brackets, Rodney G. Northrup, David W. Berzins, T. Gerard Bradley, William I. Schuckit
T. Gerard Bradley
Objective: To evaluate and compare the shear bond strengths of two adhesives using two types of brackets: a conventional and a self-ligating bracket system. Materials and Methods: Sixty extracted human premolars were collected. The premolars were randomly divided into three groups of 20 teeth. All three groups were direct bonded. Groups 1 and 2 used light-cured adhesive and primer (Transbond XT) with a conventional (Orthos) and a self-ligating bracket (Damon 2), respectively. Group 3 used a light-cured primer (Orthosolo) and a light-cured adhesive (Blūgloo) with a self-ligating bracket (Damon 2). The specimens were stored in distilled water at 37°C for …
Galvanic Corrosion Of Metal Injection Molded (Mim) And Conventional Brackets With Nickel-Titanium And Copper-Nickel-Titanium Archwires, Barbara Siargos, T. Gerard Bradley, Myrsini Darabara, George Papadimitriou, Spiros Zinelis
Galvanic Corrosion Of Metal Injection Molded (Mim) And Conventional Brackets With Nickel-Titanium And Copper-Nickel-Titanium Archwires, Barbara Siargos, T. Gerard Bradley, Myrsini Darabara, George Papadimitriou, Spiros Zinelis
T. Gerard Bradley
Objective: To compare the galvanic coupling of conventional and metal injection molded (MIM) brackets with commonly used orthodontic archwires. Materials and Methods: Six of each type of bracket were suspended in lactic acid along with a sample of orthodontic wire (three nickel-titanium and three copper-nickel-titanium) for 28 days at 37°C. The potential differences between the wires and brackets were recorded per second throughout the duration of the experiment. Results: The MIM brackets exhibited potential differences similar to those seen for the conventional brackets. The greatest potential difference was found for MIM brackets with nickel-titanium wires (512 mV), whereas MIM brackets …
Thermal Analysis Of As-Received And Clinically Retrieved Copper-Nickel-Titanium Orthodontic Archwires, Matthew C. Biermann, David W. Berzins, T. Gerard Bradley
Thermal Analysis Of As-Received And Clinically Retrieved Copper-Nickel-Titanium Orthodontic Archwires, Matthew C. Biermann, David W. Berzins, T. Gerard Bradley
T. Gerard Bradley
Objective: To compare as-received copper-nickel-titanium (CuNiTi) archwires to those used in patients by means of differential scanning calorimetry (DSC). Also, the thermal or phase properties of 27°C, 35°C, and 40°C CuNiTi archwires were studied to ascertain if their properties match those indicated by the manufacturer. Materials and Methods: Six wires of 27°C, 35°C, and 40°C CuNiTi were tested as-received, and six each of the 27°C and 35°C wires were examined after use in patients for an average of approximately 9 and 7 weeks, respectively. Segments of archwire were investigated by DSC over the temperature range from −100°C to 150°C at …
Polymerization Efficiency Of Glass-Ionomer And Resin Adhesives Under Molar Bands, Daniel John Rejman, Theodore Eliades, T. Gerard Bradley, George Eliades
Polymerization Efficiency Of Glass-Ionomer And Resin Adhesives Under Molar Bands, Daniel John Rejman, Theodore Eliades, T. Gerard Bradley, George Eliades
T. Gerard Bradley
Objective: To determine the degree of cure of a light-cured resin-modified glass ionomer (RMGI) under molar bands compared with a light-cured resin and a dual-cured resin. Materials and Methods: The 3 cements used were Fuji Ortho LC, Eagle Spectrum resin, and Variolink II dual-cure. Each sample was indirectly light cured for 20 seconds (10 seconds occlusally, 10 seconds cervically) under sections of molar bands, and the degree of cure was evaluated with micro-MIR FTIR spectroscopy. Results: The RMGI exhibited a significantly higher mean degree of cure (55.31%) than both of the resins (Eagle 19.23%; Variolink II, 25.42%), which did not …
Treatment Of Abscessed Primary Molars Utilizing Lesion Sterilization And Tissue Repair: Literature Review And Report Of Three Cases, David Burrus, Lori Barbeau, Brian D. Hodgson
Treatment Of Abscessed Primary Molars Utilizing Lesion Sterilization And Tissue Repair: Literature Review And Report Of Three Cases, David Burrus, Lori Barbeau, Brian D. Hodgson
Brian D Hodgson
Purpose: The purpose of this report was to review an emerging alternative treatment to pulpectomies and extractions for nonvital primary teeth called lesion sterilization and tissue repair (LSTR) and provide the results of three clinical case applications. LSTR is a noninstrumentation endodontic treatment that involves a triantibiotic mixture in a propylene glycol vehicle, which is used to disinfect root canal systems. This concept was developed by the cariology research unit of the School of Dentistry, Niigata University, Niigata, Niigata Prefecture, Japan. This article reviews the development of the technique, clinical procedures required for the technique, three clinical applications and radiographic …
Replication Of Known Dental Characteristics In Porcine Skin: Emerging Technologies For The Imaging Specialist, L. Thomas Johnson, Thomas W. Radmer, Dean C. Jeutter, Gary L. Stafford, Joseph Thulin, Thomas Wirtz, George Corliss, Kwang W. Ahn, Alexis Visotky, Ronald L. Groffy
Replication Of Known Dental Characteristics In Porcine Skin: Emerging Technologies For The Imaging Specialist, L. Thomas Johnson, Thomas W. Radmer, Dean C. Jeutter, Gary L. Stafford, Joseph Thulin, Thomas Wirtz, George Corliss, Kwang W. Ahn, Alexis Visotky, Ronald L. Groffy
Gary L Stafford DMD
This study demonstrates that it is sometimes possible to replicate patterns of human teeth in pig skin and determine scientifically that a given injury pattern (bite mark) correlates with the dentitions of a very small proportion of a population dataset, e.g., 5 percent or even 1 percent. The authors recommend building on the template of this research with a sufficiently large database of samples that reflects the diverse world population. They also envision the development of a sophisticated imaging software application that enables forensic examiners to insert parameters for measurement, as well as additional methods of applying force to produce …
Fostering Dental Faculty Collaboration With An Evidence-Based Decision Making Model Designed For Curricular Change, Gary L. Stafford
Fostering Dental Faculty Collaboration With An Evidence-Based Decision Making Model Designed For Curricular Change, Gary L. Stafford
Gary L Stafford DMD
This article introduces an innovative decision making model for adapting evidence-based practice to the specific needs of a department in a dental school. The design encourages suggestions for curricular change directly from the faculty members, while providing a mechanism that allows them to actively participate in the process through the use of evidence-based principles and practice. The nucleus of this model is an Advisory Council comprised of nine full-time departmental faculty members who, when charged, act as independent task force leaders who recruit other faculty members and lead small teams that investigate suggestions for curricular change. Following an accelerated investigative …