Strength is an important property for restorative materials, which depends on the microstructure and composition of material, the method of testing the fracture mechanism and the environment (20). The measurement of compressive and flexural strength is one of the methods to investigate the mechanical properties of restorations (21). Flexural strength is one of important characteristics of MTA. This property becomes more important when the MTA is placed under occlusive pressures, such as when MTA is used as pulpotomy material or direct pulp coating or forcal perforation repair. In such cases, the flexural strength of the MTA should be greater than the strength of the amalgam condensation to prevent the fracture of the MTA. Considering the clinical applications of MTA and other suitable materials in perforation repair, the bonding strength of these materials is an important factor in providing a suitable and optimum seal between the root canal system and the material. …show more content…
At the meantime, the push-out technique is considered as a valuable and useful method for evaluating these goals (23). Various factors are involved in the flexural strength of composites. Reducing the size of the filler material followed by increasing the amount of filler material in the composites lead to an increase in the flexural strength of the composite due to better inter-composite stress transfer and improved mechanical properties of the composite (24-26). In addition, the type of filling material is also effective on flexural strength and the high-strength filling material increases the flexural strength of the composite
Composite restoration usage in dentistry is increasing. Because of this interest in the longevity and reliability of composite fillings also is increasing1. One problem that can occur with composite restorations is micro-leakage. This is when microgaps at the tooth-restoration interface allow fluids and bacteria into the restoration2. These gaps are formed when the material is polymerized and shrinks, which causes the material to pull away from the margins of the preporation2. Problems that can arise from micro-leakage are secondary carries, hypersensitivity, pulp stimulation, and marginal discoloration3. This is why dentists are trying to find ways to reduce micro-leakage of composite restorations.
Pit and fissure sealants are tooth coloured materials that are applied on the occlusal surfaces of the posterior teeth in deep grooves, pits and fissures. They protect the tooth from various bacterial plaques in these caries prone areas of the teeth. The sealants protect these areas by sealing of the entrance to bacteria which give rise to dental caries in susceptible individuals especially in children. Pit and fissure sealants are now commonly being used due to the increase in the awareness among public about dental caries prevention
...at more tentatively, with fluoride gels and varnishes or a chlorhexidine varnish. Some dentists may restore root caries with amalgam restorations. Another treatment option used by some dentists to restore root caries is Glass Ionomer Cements. Glass ionomer cements were first introduced in the early 1970s. They have good adherence to mineralized tooth tissue, which keeps the removal of tooth structure to a minimum. Glass ionomer cements also have the ability to leak and absorb fluoride into the tooth, which decreases the rate of secondary caries. These factors have increased the potential for glass ionomer cements to replace amalgam as a restorative material. (Hammel)
Ceramics are most commonly used in dental applications as restorative materials for crowns, cements and dentures.
Dr. Gary Silva and his team are highly trained and experienced in providing restorations for all sorts of dental issues. We offer complete and partial dentures, tooth-colored fillings, crowns, bridges, and more. Dr. Silva’s unique background gave him real restorative experience early in his career. For more than 20 years, Dr. Silva has been offering patients the chance to gain a beautiful, functional smile with his restorative dentistry.
Dentistry is a health science that includes the study and application of measures designed to prevent damage of the oral structures and the use of clinical procedures that that restore the normal masticatory function of teeth and esthetics, correction of speech resulting from loss of natural teeth, satisfaction and comfort of the patient, preservation of alveolar bone and tempromandibular joints. Other goals are to relief pain, treatment of a disease and maintaining the restoration for a long time in the denture without distortion or fracture.
3) Describe the rationale and demonstrate how to chart existing restorations (amalgam, composite, gold, crowns, bridges, other), missing teeth, incipient caries and caries.
Although local or state are already protecting more than 20 million people in the United States, the rest of the population still faces an increased risk of cancer, learning disabilities, asthma and behavioral problems linked to exposure to coal-tar sealants. Coal-tar sealants have been widely used on parking lots, playgrounds, streets and residential driveways for many years. However, due to recent research that has proven that coal tar poses significant health risks, many organizations, legislators and concerned citizens have joined forces in their efforts to have coal-tar sealants banned.
Hydrocolloid dressings have been utilized in the midst of countless health care facilities due to the increasing number of decubitus ulcers. Decubitus ulcer, also commonly known as bedsores or pressure ulcers, is an exposed wound on your skin frequently occurring on the skin concealing bony areas. It is mutual among the elderly, people who devote prolonged periods of time in bed or a wheelchair, and individuals who cannot move particular body parts without assistance (Solan, 2014). Many diverse prevention dressings have been introduced across the years to diagnose pressure ulcers; this paper pursues to examine appropriate literature to evaluate and compare the efficacy of hydrocolloid dressing in patients with decubitus ulcers.
Unique challenges can be faced when attempting to repair the harm caused by domestic violence. One way to repair the harm caused by domestic violence is restorative justice. This paper will break down the meaning of restorative justice. It will also discuss restorative justice approaches to helping victims of domestic violence. An examination into the potential benefits and harms of restorative justice in domestic violence cases will be addressed. Finally the paper will discuss how social workers can benefit from the use of restorative justice when it comes to helping victims of domestic violence.
...an be seen that composite teeth form a high stability bond than PMMA teeth. This is due to the filler content allowing for low shrinkage, increased wear resistance and better cross-linkage with the base. In overall consensus the technique of heat-curing is believed to achieve significantly more polymer cross-linkage than that of self-curing the acrylic resin PMMA base - giving us a stronger base to teeth interface. It should be noted however that both techniques can be used for denture fabrication to achieve a desired result and it is up to the dentist and the technician to determine which one they prefer however, composite teeth bonded to a heat-cured PMMA base works best. Though the tooth and base by themselves may be strong, if the interface between them is not strong, this will result in the overall denture produced being weak independent of material selection.
Community panels, also known as, community reparative boards, have been utilized throughout the United States since the early 1900’s (Brazemore & Umbriet, 2015). This restorative practice is being used most often for low-level juvenile offenders (Brazemore & Umbriet, 2015). In this process, a small group of trained citizens conduct public, face-to-face meetings with offenders that are court order to participate (Brazemore & Umbreit, 2015). Being that this process is court-ordered, community panels are not used throughout prions. However, they are one of the most restorative approaches and could be used as a diversion technique from prison. Therefore, it is essential to discuss the values and objectives of this practice to understand the importance of its use.
Restorative practice, which evolved from restorative justice, is a new field of study that has the potential to positively influence human behavior and strengthen civil society around the world. “The fundamental premise of restorative practices is that people are happier, more cooperative and productive, and more likely to make positive changes when those in authority do things with them, rather than to them or for them” (International Institute for Restorative Practices).
According to www.merriam-webster.com restorative is having the ability to make a person feel strong or healthy again and justice is the process or results of using laws to fairly judge and punish crimes and criminals. When you link the two words together you get an alternate sanction to traditional punishment methods. This alternate method has been proven to work all around the world in countries like Africa, Asia, and Europe, just to name a few. And was established over 20years ago. When most people think of restorative or restitution they make think of money. The restorative program is so much bigger than just money. This program is intended to help the victim and the offender in the long run. Before I reviewed this lesson I also thought
The existence of micro-leakage in dental restorations was first identified in scientific research in 19126. In a study done by Harper (1912), air pressure was used to penetrate the surface between an amalgam restoration and cavity preparation7. By applying pressure through a hole in the pulpal floor, Harper could quantify the amount of pressure needed to establish leakage through the emergence of bubbles from the margins of the restoration. Research has come a long way since Harper first recognized micro-leakage. Adaptations of new materials used when placing composite restorations like BondAband, a light-cured glass-ionomer cement has been shown to reduce marginal micro-leakage in posterior restorations8. A decrease in microleakage has also been shown with the use of an ...