California RDA written exam 2023 with verified questions and answers

according to the CDC which infection control measure is considered the most critical for reducing the transmission of microbes in the health care setting? hand washing in a dental setting the clinical supply refrigerator may be used for the preservation of bonding materials A used dental anesthetic needle is an example of regulated waste Employees must receive training regarding hazardous chemicals at which interval? upon hire and whenever a new hazard is introduced The OSHA Hazard Communication Standard is based on the premise that an employee has the right to know about chemicals in the office Which set of precautions is intended to prevent exposure to all body fluids? Standard The majority of the spray produced by dental hand pieces consists of saliva which of the following viral infections can be prevented through immunization? Hepatitis B According to the Occupational Safety and Health Administration (OSHAP), a bloodborne pathogens training program should include a general explanation of the modes of disease transmission Routine hand washing removes most of the transient microbes and some of the resident microbes Which of the following greatly reduces or eliminates biofilm in the dental unit water system? properly using chemical treatments which of the following modes of disease transmission best describes a human bite? parenteral the primary reason a surgical face mask must be used during a dental procedure is to protect the DHCP from exposure to spatter Instrument cassettes should be wrapped after cleaning and before sterilization Used radiograph fixer solution is usually considered hazardous waste Which party is responsible for ensuring a Material Safety Data Sheet is available in the work place for each hazardous material? Employer Which of the following statements most accurately defines engineering controls? Materials and devices that prevent employees exposure to hazardous or infectious substances When using the air water syringe during dental treatment which of the following personal protective equipment are recommended by the CDC? gloves, mask, gown, and eye protection According to the Center for Disease Control and Prevention, patient-care items that penetrate soft tissue are categorized as critical The purpose of a holding solution is to prevent hardening of debris and body fluids on instruments Which barrier should be removed before temporarily leaving a patient to retrieve supplies? gloves The majority of organisms that make up dental unit waterline biofilm consists of water bacteria Material Safety Data Sheet (MSDS) are required by OSHA'S Hazardous Communication Standard Besides alcohol, which of the following is a common antimicrobial agent found in hand hygiene products? Chlorohexidine The accessibility of the exposure control plan for employees is the responsibility of the employer High- level disinfectants should be used according to the manufacturer's directions Exposure of dental heathcare personnel to nitrous oxide gases can be reduced by using a scavenger system on the nitrous oxide equipment When putting on personal protective equipment, which barrier should be put on last, just before patient care begins? gloves To prepare for sterilization, the high-speed hand piece and reusable air-water syringe tip should be flushed with water after each patient Who is responsible for the evaluation of hazardous chemicals? chemicals manufacturers and importers During normal use, which of the following is the most likely hazard for a dentist using a curing light? eye exposure to the light An exposure plan must be updated annually and when new or modified tasks are introduced Wearing a punctured gloves during patient care may result in which type of microbial contact? direct Work practice controls include the use of a one-handed recapping technique Heat sterilization of extracted teeth may result in the vaporization of mercury, presenting a health hazard. A person with a latent tuberculosis infection will have a positive skin test and no symptoms of active tuberculosis Which is the minimum temperature a steam sterilizer should reach to achieve sterilization? 121 degrees C Which of the following is an example of a clinical contract surface? countertops which of the following is recommended to minimize the occupational exposure to atmospheric nitrous oxide? use a properly fitted nasal patient mask who is responsible for appropriate regulated waste disposal? the generation facility According to the OSHA Bloodborne Pathogens Standard, each dental office must have a exposure control plan that is written and reviewed at least once every year The main purpose of surgical hand antisepsis is to to reduce the chance for contamination of the patient if the glove become punctured or torn. According to the OSHA Bloodborne Pathogens Standard, a contaminated sharps container should be puncture resistant and closable According to the CDC, how long should sterilization monitoring records be kept? As required by state and local regulations Which of the following would be regulated under OSHA's Hazard Communication Standard? bonding etchant To limit contamination, single- dose injectable medication should be discarded after each use including leftover contents What is the recommended procedure when a sterilizer fails two consecutive spore tests? do not use the sterilizer until the reason for the failure has been determined and corrected According to the OSHA bloodborne pathogens standard, the written exposure control plan must be updated at least annually When should chairside environmental barriers be changed? after every patient According to the CDC, biological indicators for assessing sterilization are to be used weekly The "dirty" area of the instrument processing area is used for instrument cleaning What type of gloves should be worn to protect the hands of dental healthcare personnel during instrument processing and operatory cleanup? utility housekeeping The correct steps to take when a glove rips or tears during a procedure are remove the glove, wash and dry hands, and place new glove The purpose of dating packages of sterilized instruments is to retrieve packs in the event of a sterilization failure Closing the lip and spitting into the saliva ejector may cause retraction towards the patients mouth A scavenger unit is used for the respiratory protection during the use of nitrous oxide According to OSHA, protective eye wear, surgical masks, gloves, and gowns or lab coats are personal protective equipment The primary reason a surgical face mask must be used during dental procedure is to protect the DHCP from exposure to spatter Using traditional radiographic procedures, which of the following is considered a clinical contact surface? X-ray control panel Mechanical monitoring of the sterilization process should occur with every load The primary active agent in the solution used for unsaturated chemical vapor sterilization is formaldehyde What is the proper management for work surfaces that become contaminated with blood? Clean and disinfect Which of the following demonstrates an appropriate fill level for a sharps container? 3/4 full What agency regulates the registration of hospital disinfectants? EPA Which of the following is the best environmental infection control practice for clinical contact surfaces with irregular surfaces? Covering surface with fluid impervious barriers Routine hand washing for dental healthcare personnel includes the use of water and plain soap A surgical mask should be changed after every patient Which of the following steam autoclave settings and times are most effective for sterilization of wrapped instruments? 121 degrees C (250 degrees F) and 15 psi for 30 minutes According to OSHA, safety measures that should be taken when using bonding materials with potential hazards must be found in a Material Safety Data Sheet Which of the following indicators is placed inside every package of instruments prior to sterilization? Chemical Instruments with the greatest risk of transmitting infection are critical instruments Torn gloves should be replaced as soon as possible What are the three types of sterilization monitoring? mechanical, chemical, and biological To reduce the risk of disease transmission in the dental office, it is recommended to use disposable items whenever possible Which of the following is regulated medical waste? Biopsy tissue Which of the following best describes the appropriate container for a biopsy specimen? single- leak proof container with a biohazard symbol Which of the following is recommended for managing contamination of digital radiographic sensors that cannot be heat sterilized? The use impervious barriers followed by cleaning and disinfection Which of the following is the best method for managing components of dental instruments that cannot be detached from the dental unit? cover with impervious barriers that are changed between each patient Isopropyl alochol performs best as a(n) antiseptic A dental assistant who receives an accidental exposure on the skin from a contaminated source should first wash the exposed skin with soap and water The mechanism of disease transmission for influenza is droplet Sterile surgical gloves sold in the United States must meet the standards of which regulatory agency? Food and Drug Administration (FDA) Which microorganism is used to identify a disinfectant as intermediate level? M. tuberculosis var bovis How must contaminated reusable sharp instruments be transported from the treatment area to the processing area? In a puncture- resistant container that is leak proof on the sides and the bottom According to the CDC to reduce the contamination of cleaning solutions, reusable mops used on housekeeping surfaces should be cleaned and dried before reuse the microbial skin flora that do not colonize and don not survive on the hands for long periods are transient flora Solutions used for cooling and irrigating during oral surgical procedures are best delivered through a sterile delivery device Oral surgical procedures require the use of sterile irrigating solutions using a sterile delivery system Immunization against influenza is administered once a year Which of the following is an example of an OSHA- required sharp with engineered injury protection? a self-sheathing needle attached to a dental anesthetic syringe According to the OSHA Bloodborne Pathogens Standard protective eyewear must have solid side shields One of the most important sources in preventing the spread of disease is proper hygiene of one's hands While cleaning contaminated instruments, an assistant receives a percutaneous injury to the finger. The assistant should FIRST wash hands with soap and water According to the CDC, how long should sterilization monitoring records be kept? as required by state and local regulations Prior to sterilization, loose contaminated instruments are processed in an ultrasonic cleaner to remove large debris What is the length of time that employers must maintain Hazard Communication training records? Training records are not required Sharps containers in dental practice settings must be replaced when items reach the marked fill-line on the container A single-use items reduces the reduces the risk of disease transmission because it is discarded and not reused what type of cleaning machine is used to clean contaminated instruments prior to sterilization? ultrasonic Which of the following devices have been associated with dental water line biofilm? Ultrasonic scalers What is the proper method for decontaminating impressions before sending them to the laboratory? clean and disinfect According to OSHA, if an exposure incident to potentially infectious materials occurs, the employer is required to document all of the following EXCEPT the medication given to the source patient Which of the following vaccine- preventable diseases pose the greatest risk of transmission in the dental office setting? influenza What type of orthodontics is practiced when using a fixed or removable appliance that is applied to a crossbite? interceptive Which of the following should be done FIRST if an adult patient does not have pulse? Call for emergency assistance Elastomeric materials supplied as base and catalyst are self-cured When assisting a left-handed dentist, the assistant should hold the oral evacuator tip with the left hand Elevating the patient's feet above the head to increase blood flow to the brain is the response to what medical condition? syncope Which of the following modification/ additions may be included to avoid seating a custom tray too deeply? stops The use of dry angles during moisture control activities controls saliva flow from stenson's duct Prior to placing a dental dam on a patient, the provider should review the medical history. Angle's classification is used to classify and describe occlusal and malocclusion spreaders and pluggers are used in the obturation of a root canal The air/water syringe is primarily used during the coronal polishing procedure to remove the remaining paste Clinical consideration for patients with bronchial asthma should include shorter appointments to reduce stress Dental office appointment schedules may include blocks of time set aside for emergency patients. This time is called buffer time A patient with which of the following medical conditions may benefit from prophylactic sublingual nitroglyerin? Cardiovascular disorders A plastic matrix strip is used to adapt the shape of a tooth for a (an) composite The patient record is a permanent document of whom? the patient Where would a patient's registration form be found in the dental office? In the front section of the patient's chart The dental history section of a health history form provides the dental team with information regarding previous dental care and treatment A correctly fitting impression tray has sufficient depth to leave a minimum occlusal/incisal clearance of 2.0mm Which of the following is an adverse effect of peroxide-based tooth whitening procedures? tissue irritation When transferring instrument with hinges such as surgical forceps and scissors, the assistant should grasp the hinges and direct the handles to the dentist's palm When portable equipment such as curing lights and nitrous oxide machines are used, in which zone of operation are they placed? static zone Which of the following succedaneous teeth are the first to erupt? Mandibular incisors When a patient is referred to a specialist for treatment, the assistant should send a copy of the pertinent information to the specialist Which of the following instruments is used for tactile discovery of decay? explorer At the time of primary teeth exfoliation, osteoclasts first cause resorption of root The correct sequence of dental instruments for a class I amalgam restoration tray based upon order of use is excavator, condenser, burnisher, discoid-cleoid Which of the following materials would allow the longest working time when constructing a custom impression tray? light- cured acrylic resin Which of the following is one sign of anaphylactic shock? respiratory distress What instrument would be used to smooth the edges of a stainless steel crown after adjusting its height? green stone If left untreated, plaque buildup may lead to which of the following conditions? gimgivitis Proper ergonomic positioning when working from the operator's location includes positioning the elbows close to the body To prevent alveolitis after a tooth extraction, the patient should be instructed to avoid drinking through a straw The process of mixing cements to a primary consistency is know as luting If a blood pressure reading of 142/96 is obtained on an adult, it is classified as hypertension Which of the following describes the best way to remain approachable to an anxious patient? encourage questions Fluoride- releasing restorative materials help to prevent what kind of dental caries? recurrent The dental specialty that deals with the diagnosis and treatment of the supporting tissues is periodontics A surgical dressing that is applied to the surgical site for protection is called a periodontal dressing When a person's tooth is not properly aligned with its opposing tooth, it is referred to as cross bite When a person occludes and mandibular anterior teeth cannot be seen, the diagnosis is over bite What position(s) will the orthodontist evaluate for facial symmetry? frontal and profile view What type of radiograph is the most commonly exposed in orthodontics? Panoramic How many photographs are commonly taken in the diagnostic records appointment? six What gypsum material is most commonly used for fabricating orthodontic diagnostic models? plaster What instrument is part of the setup for seating and cementing a molar band? bite stick The orthodontic scaler is used for removing excess cement or bonding material