The purpose of this experiment was to determine if there was a significant difference in the shear bond strength of orthodontic brackets on teeth bleached with hydrogen peroxide and teeth bleached with carbamide peroxide. It was hypothesized that the teeth bleached with carbamide peroxide would have a lower shear bond strength than the teeth bleached with hydrogen peroxide. In this experiment, 30 human teeth were separated into three groups: control, hydrogen peroxide, and carbamide peroxide. In the control group, the teeth were etched with 37% phosphoric acid gel for 45 seconds and then distilled water was used to rinse off the gel. An LED curing light was used to cure each tooth for 45 seconds, and then remained on the tooth for 3.5 minutes before any remaining phosphoric acid gel was rinsed off with distilled water. For the teeth labeled “Carbamide”, the same method applied to the control group was used here. After the brackets had been applied to each tooth, 3 mm of the 36% carbamide peroxide gel was brushed onto the teeth until the enamel was fully …show more content…
The null hypothesis stated that there was not a significant difference in the shear bond strength of orthodontic brackets on teeth bleached with carbamide peroxide and hydrogen peroxide. The results of the t-test showed that there was indeed a significant difference in the shear bond strength of orthodontic brackets on teeth bleached with carbamide peroxide and teeth bleached with hydrogen peroxide. Do to these results, the null hypothesis was rejected and the alternate hypothesis, which stated that there was a significant difference in the shear bond strength of orthodontic brackets on teeth bleached with carbamide peroxide and hydrogen peroxide was
Molar Relationships: What Are the Identities of the Unknown Compounds? The purpose of the experiment was to identify unknown compounds using knowledge on the concept of mole. The guiding question for this experiment is what are the identities of the unknown compounds? The numbers of moles and the identities of the compounds are the only given. To be able to identify the compounds the mass, molar mass and the number of moles will be needed.
Evidence based dental hygiene is the practice of giving your patients the best care possible with a combination of adequate techniques and patient values. When evaluating a patient, it is important to understand their values as well as what that they need clinically to improve their oral health. In today’s society, due to the internet and social media, people are presented with the latest fads in dental hygiene on a daily basis. When presented with a question in regard to this, we must research rather than just shut the idea down entirely. As a dental hygienist, it is our responsibility to research these fads and see if there is substance (scientific evidence, patient preferences, clinical/patient circumstances and clinicians experience and
Fluoride treatment should be provided to every patient (if wanted), and the amount and type should be adjusted to the patient’s needs to prevent caries, as well as sealants for patients with teeth that need them. Also, whitening trays should be available for patients who choose to bleach. It would bring great profit to the dental office because many patients want to have a perfect whiter and brighter smile. If the dental office offers various services, patients will be attracted to the
Dental assistants’ contribution to the doctor is to allow for efficient dental treatment by preparing the patient for the procedure, sterilizing instruments, passing instruments during the procedure, holding suction devices, exposing dental radiographs, taking impressions, and fabricating provisional crowns. Along with crowns, Rt1 Dental offers veneers which are wafer-thin, custom-made shells of tooth-colored materials designed to cover the front surface of teeth to improve your smile. Many people are skeptical about other procedures like cavities and root canals. During these procedures, pain is thought to be the leading dynamic because of the injections. The assistants and Dr. Trakhtman know of various techniques to help lessen the pain
Experienced and friendly dentists in Tysons Corner at SmilePerfectors help people to achieve not only healthy mouth, but also brighter and whiter teeth with their quality teeth whitening service. For the convenience and preference of different individuals, dentists at SmilePerfectors offer both in and out of the office teeth whitening solutions. For individuals who want the convenience of whitening their teeth at home, dentists at SmilePerfectors prescribe a variety of effective personal whitening kits. Using a personal whitening kit, which usually comprises of a special whitening agent and a set of mouth trays, individuals can gradually whiten their teeth.
The effectiveness of fluoride water is greatest for deciduous dentition, less caries in fluoridated communities with a range of 30-60 percent. In the ages between 8-12, is about 20-40 percent less caries in the mixed dentition and 15-35 percent less caries in adolescents between the ages 14-17 (E Newburn, 1989, p. 279). Water fluoridation was associated with reduction in dental caries experience about 29% substantially, and across all age groups 32% in permanent caries experience. The early studies reported that decay experience reduction in almost about 50% or more. In the early 1970s the fluoridated toothpaste has very important source of fluoride.
Orthodontics is the branch of dentistry that corrects teeth and jaws that are positioned improperly. Crooked teeth and teeth that do not fit together correctly are harder to keep clean, are at risk of being lost early due to tooth decay and periodontal disease, and cause extra stress on the chewing muscles that can lead to headaches, TMJ syndrome and neck, shoulder and back pain. Teeth that are crooked or not in the right place can also detract from one 's appearance. The benefits of orthodontic treatment include a healthier mouth, a more pleasing appearance, and teeth that are more likely to last a lifetime.
evaluate the effect of cavity disinfection on the shear bond strength of composite resin to dentin. 64 caries free extracted human third molars were ground flat at the buccal surface, polished and mounted auto-polymerizing acrylic resin. They were randomly distributed into four groups (of 16). In group 1 (control group), no disinfectant was used, dentin surfaces were treated with 35% phosphoric acid and Permagen primer and Permagen bonding resin. In group 2, cavity disinfectant was applied then acid etching, priming and bonding procedures were performed as in group 1.
Other cosmetic dentistry products and services include veneers, braces, bonds, crowns and bridges. Veneers are customized structures resembling shells that are attached to cover front side of a tooth, which has been chipped, crooked, poorly shaped, or permanently stained. Braces are orthodontic tools used for correcting and aligning crowded and also crooked teeth. Meanwhile, teeth-binding helps improve overall appearance of chipped, broken, and cracked teeth. It uses application of materials, which resemble the tooth enamel.
“The benefit of CAD/CAM technology is that it allows the practitioner the ability to produce esthetic, well-fitting prosthetic dental restorations onsite in a matter of hours” (Kotrzewski). The ultimate convenience of this technology is that the restoration can be placed in the same day on the damaged tooth, whereas older techniques require temporaries for several weeks while the prosthetic is being sent to an offsite laboratory and produced. This technology has caused the dental restorations that are designed and produced in an easier and more simple manner. It has also improved the speed of the creation of the restorations, therefore CAD/CAM has become a highly used and competent dental technology in dental
I. Introduction Orthodontists have always been fascinated by the concept of friction and have constantly attempted to tame it. The nature of friction in orthodontics is multifactorial, which is derived from both mechanical or biological factors. Mechanical factors include bracket/wire alloy material, cross section, surface texture stiffness and methods of ligation. Physical factors include presence of intraoral plaque, calculus, type of saliva and microbial flora. Friction is a force that retards or resists the relative motion of two objects and the direction is tangential to the common boundary of the two surfaces which are in contact.1 History reveals that Da vinci’s frictional concept was remodeled by Amontons and developed by Charles Augustin
Nail biting may also wear down tooth enamel, which could lead to decay and pain. Regular chewing on your nails can also contribute to crookedness and misalignment. Drinking Soda and Packaged Juice Both sodas and packaged fruit juices have high acidic properties and a lot of sugar. These ingredients are harmful for anyone’s teeth, but are extra harmful for people with braces because the acid stays in the brackets making them more difficult to clean.
2- Oral hygiene, periodontal conditions and carious lesions in patients treated with dental bridges. A 15-year clinical and radiographic follow-up study (Valderhaug et al. 1993a). This is a long follow up study, where patients were followed up for up to 15 years, in the first ten years, the patients were called back for professional scaling and polishing regularly every six months. There was no differences in the plaque accumulation around either crowned or normal teeth during the study period.
Introduction: The objective for the lab was to determine properties of materials by using a tension test. The properties that were determined was Young’s Modulus, ultimate tensile strength, and yield strength. Three aluminum alloys were tested. The first was the AA 2024 , which is high strength used in aerospace applications.
For the bands, wires, clasps, spurs and ligatures, 14-18 karat gold was used. With these being the materials used for braces it was expensive, at the time braces where not as common and usually only found on the more wealthy individuals. In the 1970s there were many advancements in orthodontics, the bonded bracket and self ligating brackets were introduced, also the use of stainless steel for materials. This was a relief to patients and dentists, reducing the cost of braces and the material was extremely flexible and easy to manipulate for the