Chairside Dental Procedures Mosby's Dental Assisting Exam Review Review-Questions and Answers for Dental Assisting Questions & Answers, Already Passed!!

Describe how to apply principles of four-handed dentistry in all treatment procedures including access, visibility, and equipment placement. - Answer-A. Use preset trays. B. Minimize stress by applying principles of motion economy. C. Position the patient and dental team in ergonomically designed equipment. D. Use moisture control equipment. E. Delegate all legally delegable expanded duties to the appropriate credentialed staff. Describe how to prepare for patient treatment. - Answer-A. Review the patient record to determine treatment and medical alerts. B. Prepare the treatment area; ensure that the room is clean and disinfected and that the patient record, radiographs, and lab materials are accessible; place preset trays with needed supplies. C. Ensure that the chair is positioned for patient entrance and that the pathway is accessible to the patient. D. Greet and seat the patient. Position the dental team using four-handed dentistry principles. - AnswerA. Position the patient into - Answer-supine position B. Position the operator using four-handed dentistry guidelines. - Answer-1. Thighs parallel to the floor 2. Feet flat on the floor 3. Seated back on the stool so the front edge of the stool just touches the back of the knees 4. Backrest supports the lower back area C. Position the dental assistant. - Answer-1. Sit on the dental assistant's stool with the buttocks firmly toward the back of the stool.2. Position stool as close to the patient as possible. 3. Thighs parallel to the patient chair 4. Eye level 4 to 6 inches above operator D. Implement the classifications of motion. - Answer-1. Class I—Movement of fingers only 2. Class II—Movement of fingers and wrist only 3. Class III—Movement of fingers, wrist, and elbow 4. Class IV—Movement of entire arm and shoulder 5. Class V—Movement of entire torso 6. Avoid class IV and V movement to reduce stress. E. Understand the concept of "clock zones" as they relate to operating zones. - Answer-1. The patient's face is the center of the clock, and the patient's head is at the 12 o'clock position with the face of the clock divided into four zones. 2. Right-handed operator - Answer-a. Operator's zone: 7-12 o'clock b. Transfer zone: 4-7 o'clock c. Assistant's zone: 2-4 o'clock d. Static zone: 12-2 o'clock 3. Left-handed operator - Answer-a. Operator's zone: 12-5 o'clock b. Transfer zone: 5-8 o'clock c. Assistant's zone: 8-10 o'clock d. Static zone: 10-12 o'clock IV. Explain the objectives for effective instrument transfer. - Answer-A. Position the instruments in sequence of use B. Transfer instruments and handpieces with the left hand and use the right hand for oral evacuation and preparation of next instrument or material needed. C. Use only class I, II, or III motions during transfer. D. Place working end of instruments in position of use E. Transfer instrument firmly into the operator's hand to ensure safe deliveryG. Use a single-handed transfer to maximize efficiency. Place working end of instruments - Answer-down for the mandible and up for the maxilla. Instrument grasps include - Answer-pen grasp, palm grasp, and palm-thumb grasp. Certain instruments require variations in transfer technique. - Answer-A.- Mirror and explorer, B.- Cotton pliers, C.- Instruments with hinges, such as rubber dam forceps, scissors, and surgical forceps A.- Mirror and explorer are - Answer-passed simultaneously; the assistant transfers the mirror with the right hand to the left hand of the operator, and the explorer with the left hand to the right hand of the operator. B.- Cotton pliers are delivered to the operator - Answer-with the beaks closed together while holding some form of material. On return of the used instrument, the assistant receives the forceps with the beak end firmly into the palm of the hand to avoid dropping any of the contents of the cotton pliers. C.- Instruments with hinges, such as rubber dam forceps, scissors, and surgical forceps - Answer-they be transferred by holding on to the hinged area and transferring the instrument into the operator's palm. Handles of scissors may be placed over the operator's fingers. A two-handed pass may be used for heavy instruments of this type. Expanded Duties - Answer-A. It increases production, reduces stress on the operator, allows the dentist to see more patients or use the time in another manner, and increases the job satisfaction of the dental assistant. B. The dentist is liable for the patient care even if a function is delegated. C. State dental law defines the conditions of the delegation as direct supervision or indirect supervision. D. Working as the operator requires some modification from assistant role to operator role. D. Working as the operator requires some modification from assistant role to operator role. - Answer- 1. Assume the position as the operator. 2. Practice use of the dental mirror3. Use a fulcrum (finger rest) to stabilize the hand. 4. Use the fulcrum on the same arch and in the same quadrant on which work will be performed. 5. A fulcrum is required when 6. Increased knowledge of dental anatomy 7. Have knowledge of how to adapt and move the working end of instruments to the tooth surface. 8. Understand cavity preparations to determine how to place a dental material or a matrix band and wedge. Select and prepare armamentarium for common dental procedures and describe how to use the - Answer-A. Select and/or modify an impression tray as necessary using utility wax. B. Prepare a tray for local anesthesia administration. C. Maintain the field of operation during dental procedures. D. Prepare the patient. E. Prepare a setup for dental dam application and assist in the application of the dam. Describe the use and placement of high-speed oral evacuation tips. high-volume evacuator (HVE) - Answer-Place the HVE tip before the operator positions the handpiece. Position the tip on the surface of the tooth being treated that is nearest the assistant. Position the bevel of the tip parallel to the buccal or lingual tooth surface. Keep the edge of the tip even with or slightly beyond the occlusal surface or the incisal edge. D. Prepare the patient. - Answer-1. Check the record for contraindications such as allergies or breathing problems. 2. Explain the procedure to the patient. 3. Assist in anesthesia administration. 4. Examine the site. Clear any debris from the area; floss the teeth to clear the interproximal sites and to determine tightness of contacts. 5. Apply lubricant to the lips with a cotton roll or cotton-tipped applicator.