Dentistry Commons^™

Comparative Tensile Strengths Of Preceramic And Postceramic Solder Connectors Using High-Palladium Alloy, Abdul-Hadi Shehab

Theses and Dissertations

Purpose: To evaluate the tensile strength properties of Rx Naturelle Plus and Option (high-palladium) alloys on soldered connectors under simulated preceramic and postceramic soldering conditions. Materials and methods: Eighty cylindrical castings were fabricated (40 using Rx Naturelle Plus alloy and 40 using Option alloy). The 40 castings for each alloy were subdivided into 2 groups of 20 each. In the first group, castings for each alloy were randomly paired and soldered with SMG2 solder to produce 10 preceramic test connector specimens for each alloy. In the second group, castings were similarly paired and soldered with 490 fine solder to produce …

Influence Of A 3-Step Disinfection Procedure On Dentin Bond Strength, Maria Pappas

Theses and Dissertations

Statement of problem. Clinicians have used disinfection materials to remove surface contaminants during cavity preparation. It has been postulated that disinfection materials may negatively affect shear bond strength of restorative materials. If so, large numbers of restorations may be predestined for early failure with the use of a disinfection protocol.Purpose. To determine whether there is a difference in the bond strength between dentin and composite resin with a 3-step disinfection technique compared to a conventional bonding technique without the additional disinfection protocol.Material and Methods. Sixty human molar teeth were sectioned parallel to the occlusal surface to expose mid-coronal dentin and …

Dental Treatment Options For Snoring - A Pilot Study, Kainaz Khushrooh Byramjee

Loma Linda University Electronic Theses, Dissertations & Projects

This study compared the effectiveness of an anterior repositioning device, the Silent Nite®, to two new treatments in their ability to stop/reduce snoring. Comfort and side effects of each treatment were also evaluated.

Twenty-three subjects, in good medical condition along with their spouse/partner participated in the five-week study. A disposable sleep apnea screener, SleepStrip,™ was used to select only non-sleep apnea patients. The treatments tested were: (1) Silent Nite® (control - Treatment A), (2) Loma Linda Appliance (Treatment B), and (3) Snore Tape (Treatment C). Each participant received all three treatments separated by a one week "wash-out" period of no …

Quantification Of Bone Deposition In Onlay Bone Grafting, Gregory Alan Kammeyer

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to quantitatively evaluate; 1) mandibular posterior mono-cortical block onlay bone graft success rates 2) the amount of grafted bone retained after initial resorption in radiographic projections. Seven consecutive patients with 14 mandibular posterior implant sites requiring bone augmentation for implants of a standard 3.8mm x 10mm dimension were sought. Mono-cortical block bone grafts from the ipsilateral ascending ramus were placed then observed with two standardized CT scans, dividing them into two groups: Group A had the first CT at 4 weeks after graft placement and a second taken before Prosthodontic reconstruction, 36.7 weeks later. …

Evaluation Of Shear Bond Strength Of Two Resin-Modified Glass-Ionomer Cements, Emily Y. Ro

Theses and Dissertations

Purpose: To compare the in-vitro shear bond strengths of a new paste-paste formulation of resin-modified glass-ionomer cement (Rm-GIC) to an exising powder-liquid formulation. The study will test the hypothesis that the new paste-paste formulation of Rm-GIC (Fuji-Cem ™, GC Corp, Tokyo, Japan) has the same bond strength as an existing popular powder-liquid formulation of Rm-GIC (Rely-X ™ Luting Cement, 3M, St. Paul, MN)Materials and Methods: A total of 33 human molars were sectioned parallel to the occlusal surface to expose mid-coronal dentin and mounted parallel to the bond shearing device on the universal testing machine (Instron). For Group I samples …

The Bond Strength Of Adhesive Resin Cement: Time Differential Between Cementation And Finishing Of Cast Dowel-Cores, Purnima Joan Shahani

Theses and Dissertations

THE BOND STREGTH OF ADHESIVE RESIN CEMENT: TIME DIFFERENTIAL BETWEEN CEMENTATION AND FINISHING OF CAST DOWEL-CORES By Purnima Joan Shahani, D.D.S., M.S.A Thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Dentistry at Virginia Commonwealth University.Virginia Commonwealth University, 2003Major Director: Peter C. Moon, M.S., PhDDirector of VCU Dental Biomaterials LaboratoryThis study compared the retention of cast dowel-cores cemented with Panavia® 21 subjected to immediate versus delayed high-speed finishing. Conventionally, finishing is delayed for 24 hours to one week to allow for optimal setting and ultimate strength of the cement. Forty-five recently extracted human …

An In-Vitro Comparison Of The Retention Of Prefabricated Parallel-Sided Vented Titanium Posts Cemented With Three Different Dual-Polymerizable Resin Cements, Maha Mamdouh Mostafa El-Sayed

Theses and Dissertations

AbstractAN IN-VITRO COMPARISON OF THE RETENTION OF PREFABRICATED PARALLEL-SIDED VENTED TITANIUM POSTS CEMENTED WITH THREE DIFFERENT DUAL-POLYMERIZABLE RESIN CEMENTSBy Maha M. El-Sayed, B.D.S., D.M.D.A Thesis submitted in partial fulfillment of the requirements for the degree of Master of Science at Virginia Commonwealth University.Virginia Commonwealth University, 2003Thesis Director: David R. Burns, D.M.D. Associate Professor and Program DirectorGraduate ProsthodonticsDepartment of ProsthodonticsPurpose: The purpose of this in-vitro study was to compare the retentive strength of an autopolymerizing resin cement to three dual-polymerizable resin cements when used to cement paraposts without light activation and to relate diametral tensile stress and hardness as a measure …

Evaluation Of Three Bonding Agents In The Repair Of Fractured Veneered Stainless Steel Crowns, Jennifer Liane Hoffer

Loma Linda University Electronic Theses, Dissertations & Projects

Dentists have long been challenged with finding an esthetic yet durable treatment option to restore badly carious anterior teeth. Veneered stainless steel crowns have become one of these options, but these restorations often return with the veneer fractured. To help restore esthetics, the crown may either be replaced or the veneer must be repaired. The purpose of this study was to evaluate the use of three bonding agents (PQ1, C&B Metabond, and Panavia) and one restorative material (Filtek Z250, 3M) in the repair of these fractured stainless steel crown veneers. The clinical significance is to determine the best methods of …

Marginal Discrepancy Of Components Utilized For Implant Framework Construction, Mathew Thomas Kattadiyil

Loma Linda University Electronic Theses, Dissertations & Projects

This study evaluated marginal fit discrepancy of the abutment-implant body interface employing various components commonly utilized for implant framework fabrication. Four types of components ( castable plastic patterns, premachined gold abutments, premachined titanium abutments and CAD-CAM custom premachined titanium abutments) were evaluated. Five castable plastic patterns and five premachined gold abutme~ts from each of two manufacturers, five premachined titanium abutments and five CAD-CAM custom premachined titanium abutments were used. Components were affixed to a 3.75 x 10 mm dental implant and standardized measurements were obtained of the abutment-implant interface using a computerassisted microscope at various experimental time intervals. Measurements of …

Influence Of Surface Treatment On Physical Properties Of Dental Porcelain, Anna M. De Ycaza De Boyd

Master's Theses

No abstract provided.

The Design Of A Palatal Expansion Appliance, Kelly R. Conway

Master's Theses

No abstract provided.

Tensile And Shear Bond Strengths Of Bis-Gma Adhesives To Cast Etched Alloy, James J. Koelbl

Master's Theses

No abstract provided.

A Proposed Format For Mandibular Displacement Analysis In Fixed Prosthodontics, Timothy O. Hart

Master's Theses

No abstract provided.

Determination Of The Gingival Crevicular Fluid Volumes Associated With Restored (Fixed And Removable Prosthodontics) And Non-Restored Teeth, Pamela Denise Golasz

Master's Theses

No abstract provided.

Determination Of The Gingival Inflammatory Levels Associated With Abutment Teeth Used For Fixed Prosthodontics, Thomas E. Yuhas

Master's Theses

No abstract provided.

Dentures: What You Don't Know Can Hurt You (1978), American Dental Association

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Have Missing Teeth Replaced (1978), American Dental Association

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Between You And Me… Is Your Smile (1977), American Dental Association

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Why Gold? (1976), American Dental Association

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Don't Do It Yourself (1976), American Dental Association

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Immediate Dentures (1976), American Dental Association, American Prosthodontic Society

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Removable Partial Dentures (1976), American Dental Association, The American Prosthodontic Society

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Your New Dentures (1976), American Dental Association, American Prosthodontic Society

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Have Missing Teeth Replaced (1975), American Dental Association

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Your Guide To Oral Health (1975), American Dental Association

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Dentures: What You Don't Know Can Hurt You (1973), American Dental Association

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Your New Dentures (1971), American Dental Association

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Missing Teeth: Have Missing Teeth Replaced (1971), American Dental Association

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Between You And Me… Is Your Smile (1971), American Dental Association

Patient Dental Health Education Materials 1929-1981

No abstract provided.

Immediate Dentures (1971), American Dental Association, American Prosthodontic Society

Patient Dental Health Education Materials 1929-1981

No abstract provided.