Clinical Trials About "ceramic crowns Tooth Wear" RSS

22:40 EST 15th December 2018 | BioPortfolio

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Showing "ceramic crowns Tooth Wear" Clinical Trials 1–25 of 1,100+

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Clinical Performance and Wear Mechanism of Hot-Pressed Ceramic Crowns

The objectives of this study are to characterize the clinical performance and wear mechanisms of all-ceramic posterior crowns. The wear rate of all-ceramic crowns and opposing enamel in selected patients will be quantified. The relationship of each subject's maximum clenching force and wear rate will also be analyzed.

One Year Clinical Evaluation of Milled BioHPP (PEEK) Versus Zirconia Veneered Single Crowns (RCT-one-year Evaluation).

All ceramic crowns are indicated in case of mild to moderate discoloration, restoration of traumatized or fractured teeth and abnormal tooth anatomy. Long term success of all ceramic crowns is affected by many factors. Fracture of the all ceramic crowns is the most repeated failure pattern and represents about 67% of total failures associated with this type of restoration through a period of 15 years of clinical performance. Polyetheretherketone (PEEK) is a polymer that has ma...

Analysis of Enamel Wear Against Ceramic Restorations

1. To characterize the microstructure (fracture toughness, particle size of ceramic, and inter-particle spacing) of three ceramic materials 2. To test the hypothesis that lower fracture toughness of glass and/or crystal phase in ceramics reduce wear damage of enamel. 3. To test the hypothesis that smaller sized crystals reduce wear damage of enamel. 4. To test the hypothesis that larger inter-particle spacing reduces wear damage of enamel. ...

Tooth Wear:m Tooth Wear : Diagnosis- Treatment Decision

Tooth wear is a physiological process occurring from normal functioning of the dentition throughout lifetime. The studies in the current literature indicated that both techniques of tooth preparation and the materials used are appropriate for the treatment of this condition, but the tendency is to reduce tooth preparation as reasonably possible. In this clinical trial, the investigators will compare the outcomes of direct resin composite and indirect polymer-infiltrated-...

Celtra Duo Computer Assisted Design/Computer Assisted Machining (CAD/CAM) Dental Crown Study

This investigation will be a clinical trial to study the performance of a newly developed high strength ceramic material for crowns. The ceramic has been approved by the FDA for patient treatment. A computer technique will be used to fabricate the crowns in a single appointment without the need for a temporary crown or second appointment. Two adhesive resin cement techniques will be used to hold the crown to the tooth and they will be evaluated for creating sensitivity to the t...

One Year Clinical Evaluation of Milled BioHPP Polyetheretherketone (PEEK)-Based Versus Metal Ceramic Single Crowns

Although the metal-ceramic system is still widely used to fabricate crowns and fixed partial dentures and is considered as the standard treatment in dentistry, aesthetic concerns have stimulated the development of new dental tooth-colored systems as PEEK. BioHPP PEEK is 20% ceramic reinforced, semicrystalline, thermoplastic and radiolucent polymer for extreme durability especially for frameworks for fixed and removable dental prostheses. It has many advantages as low density, ...

In Vivo Wear of All-ceramic and Metal-ceramic Crowns and Their Enamel Antagonists After Three Years

This study aims determine the wear rates of enamel versus enamel and enamel versus ceramic in human beings in relation to the microstructure of the ceramic material. Specific aims of the study and hypotheses are the following: 1. To characterize the microstructure (fracture toughness, particle size of ceramic, and inter-particle spacing) of three ceramic materials 2. To test the hypothesis that lower fracture toughness of glass and/or crystal phase in cer...

All-ceramic Crowns in Patients With Sleep Bruxism

The aim of the study is to evaluate the complication rate of 2 types of all-ceramic crowns in patients with or without bruxism.

Wear Characteristics and Clinical Performance of Lithium Silicate Versus Monolithic Zirconia Crowns.

The aim of the present study is to evaluate the wear characteristics and clinical performance of lithium silicate crowns in comparison to monolithic zirconia crowns. The quality of the overall restorations as well as gingival tissues will be also evaluated according to modified United States Public Health Service (USPHS) criteria: (Marginal adaptation, color match, anatomic form, integrity of restoration, secondary caries, retention, tooth sensitivity, gingival index and perio...

TetricCAD Crown Clinical Study

This investigation will be a clinical trial to study the performance of a new resin-based ceramic material for crowns. The material has been approved by the FDA for patient treatment. A computer technique will be used to fabricate the crowns in a single appointment without the need for a temporary crown or second appointment. The purpose of the study is to measure how well the high strength crowns function over an extended period of time.

Removable Partial Denture Abutments Restored With Monolithic Zirconia Crowns

The purpose of this study is to investigate the use of an all-ceramic dental crown material to restore the abutment teeth of partially-edentulous patients who need removable partial dentures (RPD). The outcomes of the treatment group (all-ceramic crowns) will be compared to a similarly-treated control group whose RPD abutment teeth are restored using conventional metal and metal-ceramic crowns. Primary outcomes of interest include crown survival, abutment tooth survival and RPD...

Clinical Assessement of Glazed Versus Polished Lithium Disilicate Crowns in Surface Roughness and Enamel Antagonists Wear

It is believed that final glazing yields the most acceptable ceramic surfaces in terms of smoothness. However, since reglazing must be performed in a dental laboratory with the use of a thermal furnace, it requires multiple office visits. Repeated firings have a destructive effect on ceramic surfaces and can cause deformation. Conversely, polishing is easy and simple and can be accomplished in a single session.

Evaluation of Metal-on-conventional-polyethylene vs Ceramic-on-ceramic Articulating Surfaces in Total Hip Arthroplasty

Polyethylene wear debris from metal-on-polyethylene articulations are one of the main causes of periprosthetic bone loss and non-infectious loosening in total hip arthroplasty. Ceramic articulations have a very low wear rate when measured in the laboratory and the investigator's hypothesis is that hip arthroplasty with an all ceramic articulation will have less osteolysis and wear in addition to equally good fixation and clinical outcome compared to the same hip arthroplasty de...

Tooth Wear and Associated Risk Factors

This study compares the associated risk factors between adults with tooth wear and age- and sex-matched controls without tooth wear.

Ceramic Tooth Restorations - a Comparison Study

This randomized clinical study aims to compare success and survival of two different ceramic tooth restoration materials. The hypothesis for the study is that fluoride treated zirconia will retain as good as lithium disilicate reinforced glass ceramic when cemented by the same resin cement. One group of patients will receive a restoration in fluoride treated zirconia, the other group will receive a restoration in reinforced glass ceramic. All restorations will be cemente...

Ceramic-on-Ceramic Versus Ceramic-on-HXLPE THA

Methods to reduce the revision rate of total hip arthroplasties (THAs) because of wear-related issues are important to examine, particularly because younger patients have a disproportionately high risk of revision. The investigators hoped to follow up patients and see if long-term Harris hip scores and WOMAC scores better in younger patients with a ceramic-on-ceramic (COC) THA compared with those with a ceramic-on-highly-cross-linked polyethylene (COP) THA.

Impact of Dietary Advice on the Progression of Tooth Wear

The aim of this research is to investigate the impact of dietary advice on the progression of tooth wear over 6 months using a randomised clinical trial design. Participants with severe tooth wear will be recruited. Half of those patients will receive a detailed dietary advice and the other half will be receive standard of care dietary advice. Moulds will be made of their mouths at the original appointment and 6 months later. These moulds will be scanned and superimposed to see...

Survival Rate of Adhesively Luted Veneers

The aims of this clinical study are: To evaluate the clinical performance between indirect composite and ceramic laminate veneers: Main interests are: - colour stability of the restoration (digital measurement in follow up) - failure mode of the restoration - wear of the restoration and antagonist Hypothesis: - The colour stability of indirect composite restorations will not be different from the ceramic restorations. - ...

Effect of Zirconia Implant Supported PEKK Crowns Versus Lithium Disilicate Crowns on Esthetics

aim of study is to evaluate esthetic and biomechanical outcome of maxillary anterior single-tooth zirconia implant supported PEKK crowns compared to lithium disilicate crowns on PEKK abutments .

Zirconia and Metal-based Single Crown Posterior Restorations.

The objective of this study was to compare the 5-year survival and clinical behavior of single posterior ceramic crowns made with pressable ceramic on zirconia or on a metal framework. If failures occurred, the further aim of the study was to delineate the factors contributing to the failure. The null hypothesis stated that the survival of zirconia-based restorations would be no worse that those made with metal-based material.

Satisfaction and Adaptation After Elevation of Vertical Dimension of Occlusion Using Overlay Denture or Fixed Crowns

Elevation of the vertical dimension of occlusion has always been a debatable issue specially using removable prosthesis. Fixed restorations have been a more predictable treatment modality in treating patients with tooth surface loss. A more conservative restoration, more retrievable, and cost effective option is proposed. Partial overlay dentures could provide a reversible and more conservative solution either by being used as a final restoration or teeth are provided with cera...

Clinical Performance of 3-Unit FPDs

Objectives: The purpose of this research was to determine the clinical success rate of a lithia-disilicate-based core ceramic (Ivoclar, Vivadent Corp.) for use in posterior fixed partial dentures (FPDs) as a function of bite force, cement type, connector height, and connector width. Methods: Thirty ceramic FPD core frameworks were prepared using a hot-pressing technique and a lithia-disilicate-based core ceramic. The maximum clenching force was measured for each patien...

Single Tooth Restoration in the Maxilla Using the Straumann® PURE® Ceramic Implant Monotype: One Year Follow up

The main objective is to evaluate peri-implant hard and soft tissues's stability with the use of a ceramic implant (Implant Straumann®Pure Ceramic) during one year follow up.

Evaluation of Antagonist Wear Behavior and Patient Satisfaction of Zirconia Reinforced Lithium Silicate Glass When Compared to Monolithic Zirconia

evaluation of wear behavior and patient satisfaction of monolithic zirconia and zirconia reinforced glass crowns after follow-up periods 0,3,6,12 months.

Survival of Endocrowns Made From Different Ceramics

Restoration of endodontically treated teeth requires a means to protect the cusps from the wedging forces of occlusion. When there is extensive loss of tooth structure, cuspal coverage is warranted. Usually this is in the form of indirect restoration. Traditionally, full coverage crowns have been used which would require further removal of sound tooth structure. Recently, adhesive alternatives have been introduced which allow for conservation of tooth structure. Differen...

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