VTT 242 DENTISTRY CORE MAIN QUESTIONS AND
ANSWERS SET A+
✔✔What is the recommended practice when using a mouth gag? - ✔✔Use only for a
few minutes and avoid overextending the mandible
✔✔What is the primary reason for polishing teeth after cleaning? - ✔✔Smooth
microscratches so plaque & calculus can't stick to teeth
✔✔What is the consequence of pressing the ultrasonic scaler tip to a tooth surface? -
✔✔Generates heat and thermal damage to the pulp
✔✔What is the recommendation for mechanical polishing due to heat generation? -
✔✔Only a brief period of time should be spent on each tooth
✔✔For which patients with periodontal disease are antibiotics recommended? -
✔✔Patients with compromised immune systems or systemic risk factors
✔✔How many probing sites are typically measured during periodontal assessment? -
✔✔6
✔✔What is the most accurate statement regarding COHAT? - ✔✔Home-care
instructions should be given to the client either before or after the COHAT
✔✔Which method should not be used to hold the film during intraoral radiographs? -
✔✔Holding it with a lead-lined glove
✔✔What is the correct positioning of the x-ray beam for the bisecting angle technique? -
✔✔At a 45-degree angle to the imaginary bisecting angle line
✔✔What is the most efficient position for a patient to perform a COHAT? - ✔✔Dorsal
, ✔✔What x-ray technique is used for mandibular premolars & molars? - ✔✔Parallel
✔✔What can result from continued scaling of the same tooth for more than 10
seconds? - ✔✔Pulp damage
✔✔What does the bisecting angle technique evaluate? - ✔✔Maxillary caudal teeth;
mandibular rostral teeth
✔✔What is the correct orientation of the periodontal probe when measuring sulcus
depth? - ✔✔Parallel to the tooth's long axis
✔✔What is true about foreshortening in radiographs? - ✔✔Central beam is more
perpendicular to the film
✔✔What does the parallel technique evaluate in intraoral radiographs? - ✔✔Caudal
mandibular teeth; nasal cavity
✔✔What type of debris do Calculus Rongeurs break off? - ✔✔Heavy Calculus
✔✔What is true about ultrasonic scalers? - ✔✔The end of the tip should be held at a
90-degree angle to the tooth surface.
✔✔What should the end of the tip be held at when working on a tooth surface? - ✔✔A
90-degree angle
✔✔How should the tip be moved when traveling around the circumference of the tooth?
- ✔✔It should be kept moving without stopping in any one area
✔✔What position should the side of the tip be held in relation to the tooth surface? -
✔✔Perpendicular
✔✔What type of shank allows working around a crown or in a furcation? - ✔✔A straight
shank
✔✔Which statement is the least accurate regarding hand scalers? - ✔✔If not careful,
using a hand scaler can create an iatrogenic slab fracture
✔✔What x-ray technique is used for the mandibular incisors? - ✔✔Bisecting angle
✔✔How should fluoride gel be applied during dental cleaning for maximal
effectiveness? - ✔✔It should be wiped from the tooth surface after the recommended
time
ANSWERS SET A+
✔✔What is the recommended practice when using a mouth gag? - ✔✔Use only for a
few minutes and avoid overextending the mandible
✔✔What is the primary reason for polishing teeth after cleaning? - ✔✔Smooth
microscratches so plaque & calculus can't stick to teeth
✔✔What is the consequence of pressing the ultrasonic scaler tip to a tooth surface? -
✔✔Generates heat and thermal damage to the pulp
✔✔What is the recommendation for mechanical polishing due to heat generation? -
✔✔Only a brief period of time should be spent on each tooth
✔✔For which patients with periodontal disease are antibiotics recommended? -
✔✔Patients with compromised immune systems or systemic risk factors
✔✔How many probing sites are typically measured during periodontal assessment? -
✔✔6
✔✔What is the most accurate statement regarding COHAT? - ✔✔Home-care
instructions should be given to the client either before or after the COHAT
✔✔Which method should not be used to hold the film during intraoral radiographs? -
✔✔Holding it with a lead-lined glove
✔✔What is the correct positioning of the x-ray beam for the bisecting angle technique? -
✔✔At a 45-degree angle to the imaginary bisecting angle line
✔✔What is the most efficient position for a patient to perform a COHAT? - ✔✔Dorsal
, ✔✔What x-ray technique is used for mandibular premolars & molars? - ✔✔Parallel
✔✔What can result from continued scaling of the same tooth for more than 10
seconds? - ✔✔Pulp damage
✔✔What does the bisecting angle technique evaluate? - ✔✔Maxillary caudal teeth;
mandibular rostral teeth
✔✔What is the correct orientation of the periodontal probe when measuring sulcus
depth? - ✔✔Parallel to the tooth's long axis
✔✔What is true about foreshortening in radiographs? - ✔✔Central beam is more
perpendicular to the film
✔✔What does the parallel technique evaluate in intraoral radiographs? - ✔✔Caudal
mandibular teeth; nasal cavity
✔✔What type of debris do Calculus Rongeurs break off? - ✔✔Heavy Calculus
✔✔What is true about ultrasonic scalers? - ✔✔The end of the tip should be held at a
90-degree angle to the tooth surface.
✔✔What should the end of the tip be held at when working on a tooth surface? - ✔✔A
90-degree angle
✔✔How should the tip be moved when traveling around the circumference of the tooth?
- ✔✔It should be kept moving without stopping in any one area
✔✔What position should the side of the tip be held in relation to the tooth surface? -
✔✔Perpendicular
✔✔What type of shank allows working around a crown or in a furcation? - ✔✔A straight
shank
✔✔Which statement is the least accurate regarding hand scalers? - ✔✔If not careful,
using a hand scaler can create an iatrogenic slab fracture
✔✔What x-ray technique is used for the mandibular incisors? - ✔✔Bisecting angle
✔✔How should fluoride gel be applied during dental cleaning for maximal
effectiveness? - ✔✔It should be wiped from the tooth surface after the recommended
time
