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Effects Of Five Different Finger Rest Positions On Arm Muscle Activity During Scaling By Dental Hygiene Students, Mary Elizabeth Cosaboom
Effects Of Five Different Finger Rest Positions On Arm Muscle Activity During Scaling By Dental Hygiene Students, Mary Elizabeth Cosaboom
Dental Hygiene Theses & Dissertations
This study was conducted to determine the effects of five different finger rest positions, (fulcrums: opposite arch, standard intra-oral, basic extra-oral, cross arch and finger on finger) on the muscle activity of four forearm muscles, (extensor carpi radialis longus, flexor carpi ulnar is, biceps brachii and pronator teres) during a simulated periodontal scaling experience. A convenience sample of 32 consenting right handed senior dental hygiene students who met inclusion criteria participated. The 32 students had no history of injuries or disabilities to the right arm, wrist, or hand. Pre-test maximum voluntary isometric contraction (MVIC) scores were obtained prior …
In Vitro Evaluation Of The Reciprocating Disposable Prophylaxis Angle Versus The Rotating Disposable Prophylaxis Angle In Extrinsic Stain Removal Effectiveness, Inma Lacross
Dental Hygiene Theses & Dissertations
The purpose of this study was to determine the extrinsic tooth stain removing effectiveness of a 90° counter-rotating disposable prophylaxis angle (DPA) with rubber cup as compared to the traditional 360° unirotational DPA with rubber cup. Four randomly assigned groups of cleaned, sterilized, extracted human teeth, artificially stained with coffee, tea, tobacco, and red wine were polished on the buccal and lingual surfaces using one of the two rubber cup DP As under study. Each dependent variable (four different stain types) was tested four times with each prophylaxis angle, using each of the four prophylaxis paste conditions, and three different …