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Certified Dental Assistant (CDA) 2025
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Which of the following dental specialties focuses on the alignment and correction of irregularities in the position of the teeth and jaws?
ral and maxillofacial surgery ndodontics
rthodontics edodontics
wer: C
anation: The dental specialty thatfocuses on the alignment and correct egularities in the position of the teeth and jaws is orthodontics. odontists are dental specialists who diagnose, prevent, and treat dental
irregularities, such as misaligned teeth and malocclusions. They use es, aligners, and other orthodontic appliances to gradually move and a eeth and jaws into proper position, improving both function and aesth
ch of the following dental radiographs is used to examine the root tures and surrounding bone of a single tooth?
O E O P Ans Expl ion of irr Orth and facial brac lign the t etics. Whi struc Bitewing radiograph Periapical radiograph Panoramic radiograph Occlusal radiograph Explanation: A periapical radiograph is used to examine the root structures and surrounding bone of a single tooth. It captures the entire tooth, from the crown to the root, and provides detailed information about the tooth's condition, including the presence of infections, abscesses, or bone loss. is the purpose of a dental dam during dental procedures? isolate and protect the treatment area clean and disinfect dental instruments provide anesthesia to the patient assist with tooth extraction procedures wer: A anation: The purpose of a dental dam is to isolate and protect the treat uring dental procedures. It helps in keeping the area dry and free fro amination, improving visibility and preventing the spread of saliva an s. ch of the following dental instruments is used to remove carious denti ng cavity preparation? To To To To Ans Expl ment area d m cont d oral fluid Whi n duri Spoon excavator. Gingival retractor. Condensing pliers. Crown and bridge scissors. Explanation: A spoon excavator is a dental instrument specifically designed for the removal of carious dentin during cavity preparation. Its spoon-shaped working end allows for effective excavation of decayed tooth structure. mel due to acid erosion? ental caries ental fluorosis entin hypersensitivity ooth abrasion wer: B anation: Dental fluorosis is the dental condition characterized by the l oth enamel due to excessive exposure to fluoride during tooth lopment. It can result in white or brown stains on the teeth and, in sev enamel pitting. ch of the following dental materials is commonly used for taking bite trations? Which of the following dental conditions is characterized by the loss of tooth ena D D D T Ans Expl oss of to deve ere cases, Whi regis Alginate Zinc oxide-eugenol Polyvinyl siloxane Glass ionomer Explanation: Polyvinyl siloxane is a commonly used dental material for taking bite registrations. It is highly accurate, has good dimensional stability, and provides detailed reproduction of occlusal relationships. A)? ssisting the dentist during dental procedures aking patient X-rays dministering local anesthesia erforming dental cleanings wer: D anation: Performing dental cleanings is typically not within the scope ice for a Certified Dental Assistant (CDA). CDAs primarily assist de ng dental procedures, take patient X-rays, and may assist in administer anesthesia under the dentist's supervision. ch of the following dental instruments is commonly used for removing cted wisdom tooth? Which of the following is not a primary function of a Certified Dental Assistant (CD A T A P Ans Expl of pract ntists duri ing local Whi an impa Surgical curette Periosteal elevator Luxator Dental elevator Explanation: A dental elevator is commonly used for removing an impacted wisdom tooth. Dental elevators are designed to apply controlled forces to luxate and elevate teeth from the socket during extraction procedures. They come in various shapes and sizes to accommodate different tooth positions and access areas. ch of the following dental materials is commonly used for the fabricati al crowns? omposite resin lass ionomer cement orcelain malgam wer: C anation: Porcelain is commonly used for the fabrication of dental cro elain crowns are known for their natural appearance and are often use ring teeth in the esthetic zone. They can closely mimic the color and lucency of natural teeth. Question: 222 Whi on of dent C G P A Ans Expl wns. Porc d for resto trans Which dental specialty focuses on the treatment of gum diseases and conditions? Orthodontics Endodontics Periodontics Prosthodontics Answer: C ch of the following dental instruments is used to remove sutures after cal procedure? eriodontal probe. emostat. caler. xcavator. wer: B anation: A hemostat, also known as a surgical forceps, is a dental ument used to remove sutures after a surgical procedure. Its pointed ti ocking mechanism allow for secure grasping and controlled removal o es. Whi a surgi P H S E Ans Expl instr ps and l f sutur Which of the following dental instruments is used for the removal of calculus and plaque from the teeth? Mouth mirror. Periodontal probe. Scaler. Excavator. Answer: C ch of the following is a benefit of becoming a Certified Dental Assista A)? igher salary compared to non-certified dental assistants xemption from continuing education requirements bility to perform complex dental procedures independently imited job opportunities in the dental field wer: A anation: One of the benefits of becoming a Certified Dental Assistant A) is the potential for a higher salary compared to non-certified dental tants. Certification demonstrates a higher level of knowledge and skill h can result in increased earning potential. Whi nt (CD H E A L Ans Expl (CD assis , whic Which of the following dental specialties focuses on the surgical treatment of diseases, injuries, and defects of the oral and maxillofacial region? Endodontics Orthodontics Oral and maxillofacial surgery Prosthodontics Answer: C of procedures, including tooth extractions, jaw surgeries, and facial nstructive surgeries. is the purpose of a dental dam clamp during the placement of a dent stabilize the dental dam and prevent it from slipping secure the dental dam to the patient's face protect the patient's lips and cheeks anchor the dental dam to individual teeth wer: D anation: The purpose of a dental dam clamp during the placement of a al dam is to anchor the dental dam to individual teeth. It helps to creat seal around the tooth being treated and prevents the dental dam from reco What al dam? To To To To Ans Expl dent e a tight sliding or dislodging during the procedure. Which dental material is commonly used for taking impressions of edentulous (toothless) arches? Alginate Polyvinyl siloxane Zinc oxide-eugenol Dental composite resin Answer: A es. It is a fast-setting and cost-effective material that provides good de oduction of the oral tissues. ch dental specialty focuses on the alignment and positioning of teeth a ndodontics rthodontics eriodontics rosthodontics wer: B anation: Orthodontics is the dental specialty that focuses on the align ositioning of teeth and jaws. Orthodontists use braces, aligners, and o ances to correct malocclusions and improve the esthetics and function Explanation: Alginate is commonly used for taking impressions of edentulous arch tail repr Whi nd jaws? E O P P Ans Expl ment and p ther appli of the dentition. Which of the following dental specialties focuses on the alignment and positioning of teeth and jaws? Endodontics Periodontics Orthodontics Prosthodontics Answer: C ositioning of teeth and jaws. Orthodontists use braces, aligners, and o odontic appliances to straighten teeth and correct malocclusions (impr ). ch of the following dental materials is commonly used as a temporary g material and for root canal obturation? omposite resin malgam utta-percha orcelain wer: C anation: The dental material commonly used as a temporary filling rial and for root canal obturation is gutta-percha. Gutta-percha is a ru Explanation: Orthodontics is the dental specialty that focuses on the alignment and p ther orth oper bites Whi fillin C A G P Ans Expl mate bbery material derived from the sap of certain trees. It is used in dentistry as a filling material for temporary restorations and for filling and sealing the root canal space during root canal treatment. Gutta-percha provides a good seal and helps prevent reinfection of the root canal system. Which of the following dental materials is commonly used for indirect restorations, such as crowns, inlays, and onlays? Composite resin Amalgam Porcelain wer: C anation: The dental material commonly used for indirect restorations, owns, inlays, and onlays, is porcelain. Porcelain is a ceramic material e fabricated to closely resemble the natural color and translucency of It is highly resistant to staining and provides excellent aesthetics and bility for long-term dental restorations. ch of the following dental imaging techniques is commonly used to uate the tooth roots and surrounding bone? itewing radiographs anoramic radiograph one beam computed tomography (CBCT) eriapical radiographs Expl such as cr that can b teeth. dura Whi eval B P C P Answer: D Explanation: Periapical radiographs are commonly used to evaluate the tooth roots and surrounding bone. Periapical radiographs capture a detailed image of a specific tooth from the crown to the root tip, including the surrounding bone structure. They are useful for detecting dental caries, assessing root canal treatments, evaluating periodontal conditions, and identifying abnormalities in the tooth roots or supporting bone. Bitewing radiographs are primarily used to detect interproximal caries, panoramic radiographs provide an overview of the entire dentition and surrounding structures, and cone beam computed tomography (CBCT) is a 3D imaging technique used for more complex diagnostic purposes. ch of the following dental radiographs is used to evaluate the relations een the teeth and the temporomandibular joints? eriapical radiograph. itewing radiograph. cclusal radiograph. anoramic radiograph. wer: C anation: An occlusal radiograph is used to evaluate the relationship een the teeth and the temporomandibular joints. It provides a broad vi maxillary or mandibular arch and can help identify any abnormalitie ders affecting the joints. ch zone in the dental operatory is responsible for maintaining aseptic betw P B O P Ans Expl betw ew of the s or disor Whi conditions and handling instruments? Transfer zone Assistant's zone Operator's zone Disposal zone Answer: B Explanation: The Assistant's zone in the dental operatory is responsible for maintaining aseptic conditions and handling instruments. The dental assistant works in this zone to provide support to the dentist during procedures. ch of the following is a common side effect of prolonged use of antibi erostomia (dry mouth) alitosis (bad breath) achycardia (rapid heart rate) andidiasis (oral thrush) wer: D anation: Candidiasis, also known as oral thrush, is a common side eff onged use of antibiotics. Antibiotics can disrupt the natural balance of oorganisms in the mouth, leading to an overgrowth of Candida fungus evelopment of thrush. 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