8/14/2023 0 Comments Breaking the sound barrier© 2013 Special Care Dentistry Association and Wiley Periodicals, Inc. Hearing impairment oral health status reinforcement period visual tooth brushing aid. The OHE program specially formulated for the hearing impaired children was effective in improving their oral health status significantly. Brushing skills of children improved significantly at the end of study, notably in areas where brushing was previously deemed unsatisfactory. It was powered by 6,000 lbs (27 kN) of thrust, reaching 1,019 mph (1,640 km/h). mutans counts was observed, from Pre-OHE levels up to the levels at the end of the period of nonreinforcement. The meaning of THE SOUND BARRIER is the large increase in air resistance that occurs as an aircraft nears the speed of sound and that was once an obstacle to traveling faster than the speed of sound. The sound barrier was first broken in a vehicle in a sustained way on land in 1948 by a rocket-powered test vehicle at Muroc Air Force Base (now Edwards AFB) in California, United States. Significant decreases were observed in the mean values of both the MGI and MQPI from the baseline up to the values obtained at the end of both periods of reinforcement and nonreinforcement. It’s so difficult because of something called compressibility. At colder temperatures, the speed of sound is less, making it easier to exceed it. Meaning it takes more energy and speed to fly faster. Further work on the design would yield the first British piloted aircraft to break the sound barrier and high-speed crashes in the aircraft would kill the founder of the company's son, Geoffrey de Havilland, Jr., and test pilot John Derry. At higher temperatures, the speed of sound is much quicker. The first of the boundary-breaking De Havilland DH108 aircraft, a low-speed prototype. Brushing skills were assessed using the Simmons index at the start of the study. The speed of sound varies dependent on the local temperature. Salivary Streptococcus mutans levels of the children were also evaluated. Oral health status was evaluated at the start of the study (pre-OHE level) using the Modified Gingival Index (MGI) and the Turesky-Gilmore-Glickman modification of the Quigley Hein Plaque Index (MQPI). One hundred and ten institutionalized children with moderate-to-severe hearing impairment aged 6-14 years were selected for the study. Its efficacy in improving their oral health status was evaluated after periods of reinforcement and nonreinforcement. In our study, a visual oral health education (OHE) program was specially designed for children with hearing impairment.
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