Results 201 to 210 of about 73,214 (250)

Risk Factors for Failure of Direct Restorations in General Dental Practices

Journal of Dental Research, 2020
The aim of this retrospective noninterventional multicenter practice-based study was to analyze factors influencing the survival of direct restorations. Records from patients who visited 5 private practices regularly were searched for the presence of direct restorations.
R.J. Wierichs, E.J. Kramer, H. Meyer-Lueckel   +2 more
openaire   +4 more sources

Longevity of posterior dental restorations and reasons for failure

European Journal of Oral Sciences, 2012
Tooth‐coloured restorative materials are being used increasingly more often in Class II preparations in permanent teeth. Using a practice‐based study design, we aimed to assess the survival time of Class II restorations and to identify factors relevant to their longevity.
Simen E, Kopperud, Anne Bjørg, Tveit, Torunn, Gaarden, Leiv, Sandvik, Ivar, Espelid   +4 more
openaire   +2 more sources

Failure mode of dental restorative materials under Hertzian indentation

Dental Materials, 2007
To explore the application of Hertzian indentation testing to amalgam and GIC; study the failure behavior of the bi-layer structure of each material on a relatively soft substrate; and investigate the effect of thickness.Amalgam (Lojic+, SDI, Bayswater, Australia) and ceramic-reinforced GIC (Advanced Healthcare, Tonbridge, UK) discs, 10 mm diameter ...
Yan, Wang, B W, Darvell
openaire   +2 more sources

Mechanical Failure of Dental Restorations: The Weakest-Link Theory

2020
Tooth tissues and many of the dental restorative materials, e.g. ceramics and resin composites, are brittle in nature. It is typical of these materials to show a large variation in their fracture strength. A mechanistic approach which can account for their complex shapes and stress distributions is needed in the design and performance optimization of ...
Alex Fok, Hooi Pin Chew
openaire   +1 more source

A retrospective cross-sectional study of early patient-reported failures of direct restorations placed in a primary dental care setting

British Dental Journal, 2021
Introduction A retrospective cross-sectional study of early patient-reported failures of restorations was initiated to understand the reasons and factors associated with early failure. Early patient-reported failures are defined as restorations requiring replacement within three months of placement.Aim To investigate if restorative material placed or ...
Vivian Yung Yee, Wong, Yoke Kwan, Chua, Holy, Jr Koh, Kenneth Meng Tze, Low   +3 more
openaire   +2 more sources

Types of Failures in Porcelain-Fused-to-Metal Dental Restoration

2015
Porcelain-fused-to-metal (PFM) restoration is a type of dental prosthesis introduced since the early 1960s. This prosthesis is strong, aesthetically satisfactory, and affordable. This study aims to classify the types of failures observed in PFM prostheses that were constructed in a dental laboratory in Misrata, Libya. Data from six months of laboratory
Mohamed M. Aboras, Andanastuti Muchtar, Che Husna Azhari, Norziha Yahaya   +3 more
openaire   +1 more source

Comparison of shear and microtensile failure stresses in the repair of dental composite restorations

2011 2nd International Conference on Instrumentation, Communications, Information Technology, and Biomedical Engineering, 2011
Failure of dental composite restorations frequently occurs. To preserve tooth structure, repair of existing restorations can be done by relayering (composite-to-composite-bonding). This study compares shear and microtensile failure in composite-to-composite-bonding.
Margareta Rinastiti, Widowati Siswomihardjo, Mutlu Ozcan   +2 more
openaire   +1 more source

Early Failure of Class II Resin Composite Versus Class II Amalgam Restorations Placed by Dental Students

Journal of Dental Education, 2012
Using the information from remake request slips in a dental school's predoctoral clinic, we examined the short‐term survival of Class II resin composite restorations versus Class II dental amalgam restorations. In the student clinic, resin composite is used in approximately 58 percent of Class II restorations placed, and dental amalgam is used in the ...
J D, Overton, Diane J, Sullivan
openaire   +2 more sources