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Fresnel lens design allows a substantial reduction in thickness (and thus mass and volume of material) at the expense of reducing the imaging quality of the lens, which is why precise imaging applications such as photography usually still use larger conventional lenses. Fresnel lenses are usually made of glass or plastic; their size varies from ...
used in adenoid surgery.held in dagger holding fashion and passed behind soft palate. Yankauer's nasopharyngoscope: for a direct access or look at the nasopharynx: Yankauer suction tip: double bent sucker; used as a sucker in operations of the mouth Lichtwitz antrum-puncture trocar and canula
Osteo-odonto-keratoprosthesis (OOKP), also known as "tooth in eye" surgery, [1] is a medical procedure to restore vision in the most severe cases of corneal and ocular surface patients. It includes removal of a tooth from the patient or a donor.
A dental laser is a type of laser designed specifically for use in oral surgery or dentistry. The use of a laser can decrease morbidity after surgery, and reduces the need for anesthetics . Because of the cauterization of tissue there will be little bleeding following soft tissue procedures, and some risks of alternative electrosurgery ...
Oral and maxillofacial surgery requires an extensive 4-6 year surgical residency training covering the U.S. specialty's scope of practice: surgery of the oral cavity, dental implant surgery, dentoalveolar surgery, surgery of the temporomandibular joint, general surgery, reconstructive surgery of the face, head and neck, mouth, and jaws, facial ...
The Ohio State Dental Clinics offer primary care and a full range of specialty clinics all in one building. The Dental Emergency Care Clinic is also available as a walk-in only service available to adult patients older than age 18. Emergency care is provided by third- and fourth-year dental students under the supervision of college faculty.
A compact linear Fresnel reflector (CLFR) – also referred to as a concentrating linear Fresnel reflector – is a specific type of linear Fresnel reflector (LFR) technology. They are named for their similarity to a Fresnel lens , in which many small, thin lens fragments are combined to simulate a much thicker simple lens.
A Fresnel imager is a proposed ultra-lightweight design for a space telescope that uses a Fresnel array as primary optics instead of a typical lens. It focuses light with a thin opaque foil sheet punched with specially shaped holes, thus focusing light on a certain point by using the phenomenon of diffraction .