The efficacy of using ear protection device (ear plugs) in reducing the immediate noise induced hearing loss among dentist after using ultrasonic scalers: a randomized cross-over study.

Manipal University0 个研究点目标入组 60 人开始时间: 待定最近更新: 2021年11月24日

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•About 64 dental professionals of age 20-30 years who volunteered for the study will be selected according to the following inclusion criteriaâ??s: 1) Subjects with normal hearing capacity in both the ears (pure tone thresholds within normal limits in octave frequencies) 2) Subjects with no history of any ear infection, hearing defect or trauma 3) Subjects without any systemic illness or history of any drug intake 4) No history of any nerve injury or trauma involving the central or peripheral nervous system. This is done to avoid any bias that would arise due to previously present hearing dysfunctions.

•1) Subjects who have any previous history of head and neck injury involving the ear. 2) Subjects with previous history of nerve injury or trauma involving the central or peripheral nervous system 3) Subjects with no history of any ear infection, hearing defect or trauma 4) Subjects with previous or presence of any ear infection, hearing defect or trauma

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