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In relation to dental radiography, what term refers to the anatomical landmark used to identify a maxillary canine periapical film? - correct answer Maxillary Sinus Prior to exposing a dental radiograph, placement of the lead apron over the patient protects which tissues? - correct answer Gonadal A blood pressure cuff should be placed over which of the following arteries? - correct answer Brachial What 3 factors are essential in order to produce accurate diagnostic casts? - correct answer Water to powder ratio, mixing time and water temperature What is the name of the adhesive film that retains bacterial colonies to the teeth? - correct answer Pellicle What radiograph image is most useful for inter proximal caries? - correct answer Bitewing Which fluid provides lubrication during movements of the TMJ? - correct answer Synovial Fluid What is the correct way to store scrap amalgam? - correct answer In a tightly closed mercury recycling container In a steam sterilizer, the distilled water is converted to steam then condensed back into liquid water. What happened to the condensed water? - correct answer It is drained from the sterilizer and discarded down the drain in the sink A patient presents to the dental office with concerns about sensitivity on a lower canine tooth. The dentist performs an exam and diagnosis gingival recession and
abrasion on the facial root surface of tooth 33. The patient has 100% coverage for diagnostic, preventive and restorative services.
- What is the etiology of the sensitivity?
- What could cause the tooth pathology?
- What term refers to the dentist regarding dental insurance?
- The patient should be encouraged to use a dentifrice containing fluoride and which other chemical agent? - correct answer - Exposed dentinal tubules
- Use of an abrasive dentifrice
- Provider
- Potassium nitrate A 24 year old patient presents for an emergency exam. During the interview it is noted that he is a heavy smoker and under emotional stress. The clinical findings are : a biofilm index of 3 with some ulceration of interdental papillae.
- What condition does the patient have?
- What is the recommended treatment?
- What does the biofilm index assigned to the patient mean? - correct answer 1) Necrotizing periodontitis
- Debridement, careful brushing at home, warm water rinses
- Heavy biofilm accumulations on both tooth and gingival surfaces A 7-year old falls down some stairs, and is immediately transported to a hospital dental facility. Clinical exam reveals that tooth 11 has a fracture with pupal exposure and that 21 has been avulsed. The patients father has the avulsed tooth.
- For the re-implantation of the 21 to have the highest success rate, how quickly should it be placed back into the alveolus?
- How should the avulsed tooth be kept during transportation to the hospital?
- What would be used to stabilize the re-implanted tooth?
- What treatment would be correct for tooth 11? - correct answer 1) Within 30 minutes
dentist does an intra-oral exam and prescribes a direct digital periapical radiograph of the area. The DA is directed to assemble equipment and supplies for pulp vital testing.
- Where would the dental assistant place the sensor for the prescribed image?
- What radiolucent structure would the dental assistant expect to see near the apex of the fractured tooth
- Which one of the following teeth would be best as the control tooth for the pulp vitality test?
- The cold test for the tooth causes an intense pain that does not resolve for a few minutes. What diagnosis is most probable? - correct answer 1) Away from the tooth, near the vault of the palate
- Maxillary sinus
- 26
- Irreversible pulpitits What is the dental dam error when the dam is bunching and stretching on the lingual of the dam when placed? - correct answer The arch is punched too flat What is the dental dam error when the folding occurs on the facial aspect of the completed dam? - correct answer The arch is punched too curved What is the dental dam error when inversion of the dam is impossible, resulting in leakage throughout? - correct answer The holes are punched too large What is the dental dam error when excess dam material is present between all exposed teeth? - correct answer The holes are punched too far apart What is the dental dam error when the dam material is bunched on the medial and distal of the operative tooth resulting in the hand piece catching and tearing the dam septa? - correct answer The holes are punched too far apart What type of stain is present when there are black tenacious deposits present in pit and fissures on enamel and restorations? - correct answer tobacco
What type of stain is present when a non-smoker has yellow-brown stains on interproximal and cervical areas of the teeth, as well as on restorations, dorsal surface of the tongue and within retained biofilm? - correct answer Chlorohexadine What type of stain is present on a 12 year old patient that has staining on the buccal surfaces of maxillary permanent molars and lingual surfaces of lower anterior teeth. The recorded biofilm index is 2. - correct answer Yellow What is the rationale for obtaining vital signs? - correct answer To confirm the patients health status is at a level of well being by taking their
- temperature
- pulse
- respiration
- blood pressure A normal pulse rate for an adult is between 60-____ bpm. While a child's normal rate is between 70 - ____ bpm. - correct answer 100 120 How do you check a pulse? - correct answer With the patients arm at the same level as or lower than the heart, extended straight out, the pulse can be found on the side of the neck, on the inside of the elbow, or at the wrist. The most common place to take a patients pulse is the _____ artery. - correct answer radial The most common place to take a patients blood pressure is the ______ artery. - correct answer brachial A normal body temperature reading ranges between 97.6-___ F ( 36.4-37.3 C) - correct answer 99
A bite registration is taken to produce a reproduction of the ________ relationship of the max and _____ teeth when the mouth is ________. Providing the dentist with an accurate ______ relationship. - correct answer occlusal mand occluded centric What are the 2 basic impression trays - correct answer stock & custom A quadrant tray covers _____ of an arch. A section tray covers the ______ portion of the arch and a full-arch tray covers the entire arch. - correct answer half anterior When would softened utility wax be added to the palate area of the impression tray?
- correct answer For a patient with an unusually high palate What type of impression tray allows the impression material to lock on mechanically? - correct answer perforated surface tray An impression is a ______ reproduction of the structures and the model created from the impression is a _______- reproduction of the structures. - correct answer negative positive A _______ _____ and _____ _____ tray can be used for final impressions. - correct answer bite tray and triple tray Alginate is an ________ hydrocolloid. It's shelf life is approximately ___ _____. Most impressions must be poured up within an ______. - correct answer irreversible one year hour
Imbition can occur if an impression is left in ______ it will _______ and _______. Syneresis can occur if an impression is left in the _____ _____ causing it to the _______. - correct answer liquid absorb expand open air shrink Normal set alginate has a working time of ___ minutes and a setting time of ______ minutes after mixing - correct answer 2 4 1/ An adult maxillary requires : ratio of powder to water. While the mandibular requires : ratio of powder to water. - correct answer 3: 2: Hydro means _____. Colloid means ______ substance. - correct answer water gelatinous What is the organic substance within a hydrocolloid? - correct answer seaweed What is the disaffection process for impressions? - correct answer The impression is disinfected, placed in a biohazard bag, labeled and readied for the lab technician. The reversible hydrocolloid is kept in a ______ _____ before an impression is taken - correct answer conditioning bath The four types of elastomeric material are ________, _______, silicone, and polysiloxane. - correct answer polysulfide polyether Polysulfide material is a ______ _______ that has a ____ _____ and can ____ ______. - correct answer rubber base
- contrast exposure time Factors that affect the quantity of the x-ray beam - correct answer - Amperage (A)
- Milliamperage (mA)
- Milliampere-Seconds(mAs)
- Density and Milliamperage
- Exposure time and Milliamperage Composition of dental x-ray film - correct answer lead coil, radiograph film, black paper Types of digital imaging receptors - correct answer Direct & Indirect What do you call the solid state sensor that contains an x-ray sensitive silicon chip with an electronic circuit embedded in the silicon? - correct answer Direct digital imaging What commonly used Direct digital receptor, used in variety of other Imaging devices like fax, telescope etch. - correct answer Charge coupled Device (CCD) What is the type of Indirect Imaging system, where the imaging receptor is a thin flexible plate, same as the size of conventional x-ray film - correct answer Phosphor Storage Plate (PSP) In digital radiography, what replaces the intra-oral film? - correct answer CCD what digital technique requires scanning of image receptors? - correct answer Phosphor storage plate What is the anatomical landmark in between the roots of the maxillary central incisors? Is it radiopaque or radiolucent? - correct answer Incisive foramen radiolucent
What is the anatomical landmark above the maxillary central incisors? Is it radiopaque or radiolucent? - correct answer Superior foramina radiolucent On an anterior maxillary pa image, the ______ _______ appears as a radiolucent area between the maxillary canine and lateral incisor. - correct answer Lateral Fossa What is the anatomical landmark on a PA film that extends from the alveolar bone between the maxillary central incisors to the posterior hard palate. It is a radiolucent line. - correct answer Median Palatal Suture What is the anatomical landmark for an anterior maxillary pa image, the nasal cavity appears as large radiolucent area superior to the maxillary incisors. - correct answer Nasal Cavity What is the anatomical landmark for an anterior maxillary pa image, the nasal septum appears as a vertical radiopaque partition that divides the nasal cavity. - correct answer Nasal Septum What lesions are below the mucosal surface? - correct answer Erosion, abscess and cysts What is the anatomical landmark for an anterior maxillary pa image, the floor of the nasal cavity appears as a dense radiopaque band of bone superior to the maxillary incisors. - correct answer Floor of nasal cavity What is the anatomical landmark for an anterior maxillary pa image, that appears as a V-shaped radiopaque area located at the intersection of the floor of the nasal cavity and the nasal septum - correct answer Anterior nasal spine Obturate - correct answer fill the canal Which lesions extend above the mucosal surface? - correct answer Hematoma
Which opportunistic infection is seen as purplish lesions on the skin or oral mucosa of HIV patients? - correct answer Kaposi's sarcoma What is the malignant condition that involves the lymph nodes of patients with HIV?
- correct answer Lymphoma What is the term for an abnormally large jaw? - correct answer Macrognathia What is the term for bony growths in the palate? - correct answer Torus palatinus What is a more common term for ankyloglossia? - correct answer Tongue tie What is the dental term for a tooth within a tooth? - correct answer Dens in dente What is the term for abnormally small teeth? - correct answer Microdontia What term is used to describe two teeth that are joined together? - correct answer Gemination Which teeth are often affected by ankylosis? - correct answer Deciduous molars What is the hereditary condition that affects the dentin? - correct answer Dentiongenesis imperfecta What is the difference between attrition and abrasion? - correct answer Attrition is the normal wearing away of tooth structure from chewing where as abrasion is the normal wearing away of tooth structure from repetitive behaviour. What is an oral indication of bulimia? - correct answer Pattern of erosion on lingual surfaces of teeth
What are the three potential complications of orofacial piercings? - correct answer chipped and broken teeth and a serious infection at the sites of the piercings What are the 3 primary shapes of bacteria? - correct answer 1. Cocci (spherical)
- Bacilli (rod)
- Spirochetes (spiral) What is the staining process for separating bacteria? - correct answer Bacteria that are stained by dye are called Gram positive. If they do not hold stain they are Gram negative. If they are not consistently stained they are Gram variable What is the term for bacteria that require oxygen to grow? - correct answer Aerobe What is the most resistant form of bacterial life? - correct answer Spores How are prions different from other microorganisms? - correct answer Prions convert normal protein molecules into dangerous ones simply by causing the normal ones to change their shape. Which types of hepatitis are spread by exposure to blood? - correct answer B,C & D How is HIV spread? - correct answer Spread by sexual contact and needle sharing among drug users. What tissues are affected by the West Nile virus? - correct answer Nervous system causing inflammation of the brain and spinal cord How is H1N1 virus spread? - correct answer Virus touches nose, eyesore mouth. It also can be spread through a cough or sneeze. What microorganism is used as the benchmark for the effectiveness of a surface disinfectant? - correct answer Tuberculosis
Where is the static zone - correct answer 12-2 o'clock What colours are the nitrous oxide tanks - correct answer Oxygen - Green Nitrous - Blue What is the speed of a high speed? - correct answer 450,000 rpm What is the speed of a slow speed? - correct answer 10,000-30,000 rpm What are the types of excisonial surgeries? - correct answer ginvecotomy and gingiveplasty What is pulp-capping - correct answer CAOH on the pulp
