RAD1126 TEST#2 NEWEST 2025
COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS Graded A+
Definition of Bisect
To divide into 2 equal parts
Definition of Long axis of the tooth
An imaginary line that divides the tooth longitudinally into
2 equal parts
Bisecting Technique
,- Receptor must be placed along the lingual surface
- Imaginary bisector bisects the angle formed by the
receptor and the long axis of the tooth
- Result in 2 imaginary right/congruent triangles
Film Stabilization
Beam alignment devices are used to position the receptor
*Dot in the slot
Receptor Size Used in BS Technique
Size 2
PID Angulation for BS Technique
Positioning in horizontal angulation: ear-to-ear direction
of the cone
Correct Horizontal Angulation
Central ray directing perpendicular to the curvature of the
arch through contact areas
Vertical vs. Horizontal Angulation
Vertical: central ray in up-and-down plane
Horizontal: central ray in side-to-side plane
Vertical Angulations for Incisors
Max: +40 to 50 degrees
Mand: -15 to 25 degrees
,Vertical Angulations for Canines
Max: +45 to 55 degrees
Mand: -20 to 30 degrees
Vertical Angulations for Premolars
Max: +30 to 40 degrees
Mand: -10 to 15 degrees
Vertical Angulations for Molars
Max: +20 to 30 degrees
Mand: -5 to 0 degrees
Step-by-step Procedures of Bisecting
1. Client/patient preparation
2. Equipment preparation
3. Exposure sequence for receptor placements
4. Receptor placement for bisecting technique
8 Steps of Client Preparation
1. Infection control
2. Preparation of treatment area and supplies
3. Client seated and explain the procedure
4. Position client in the chair (headrest)
5. Place lead apron with thyroid collar
6. Remove all objects from client's mouth
, 7. Set exposure factors
8. Open sterilized package containing the beam alignment
device if it was already used
Exposure Sequence for Receptor Placements
*Using a Snap-a-ray
Anterior:
1. begin with max right canine to the max left canine
2. begin with mand left canine to the mand right canine
Posterior:
1. begin with max right quad
2. move to mand right quad
3. move to max left quad
4. finish with mand left quad
Advantages vs. Disadvantages of BS Technique
Advantages:
- No beam alignment device required
- No anatomical restrictions
- Available for anatomical situations (ex. shallow palate,
large palatal torus, short lingual frenum)
Disadvantages:
- Image distortion
COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS Graded A+
Definition of Bisect
To divide into 2 equal parts
Definition of Long axis of the tooth
An imaginary line that divides the tooth longitudinally into
2 equal parts
Bisecting Technique
,- Receptor must be placed along the lingual surface
- Imaginary bisector bisects the angle formed by the
receptor and the long axis of the tooth
- Result in 2 imaginary right/congruent triangles
Film Stabilization
Beam alignment devices are used to position the receptor
*Dot in the slot
Receptor Size Used in BS Technique
Size 2
PID Angulation for BS Technique
Positioning in horizontal angulation: ear-to-ear direction
of the cone
Correct Horizontal Angulation
Central ray directing perpendicular to the curvature of the
arch through contact areas
Vertical vs. Horizontal Angulation
Vertical: central ray in up-and-down plane
Horizontal: central ray in side-to-side plane
Vertical Angulations for Incisors
Max: +40 to 50 degrees
Mand: -15 to 25 degrees
,Vertical Angulations for Canines
Max: +45 to 55 degrees
Mand: -20 to 30 degrees
Vertical Angulations for Premolars
Max: +30 to 40 degrees
Mand: -10 to 15 degrees
Vertical Angulations for Molars
Max: +20 to 30 degrees
Mand: -5 to 0 degrees
Step-by-step Procedures of Bisecting
1. Client/patient preparation
2. Equipment preparation
3. Exposure sequence for receptor placements
4. Receptor placement for bisecting technique
8 Steps of Client Preparation
1. Infection control
2. Preparation of treatment area and supplies
3. Client seated and explain the procedure
4. Position client in the chair (headrest)
5. Place lead apron with thyroid collar
6. Remove all objects from client's mouth
, 7. Set exposure factors
8. Open sterilized package containing the beam alignment
device if it was already used
Exposure Sequence for Receptor Placements
*Using a Snap-a-ray
Anterior:
1. begin with max right canine to the max left canine
2. begin with mand left canine to the mand right canine
Posterior:
1. begin with max right quad
2. move to mand right quad
3. move to max left quad
4. finish with mand left quad
Advantages vs. Disadvantages of BS Technique
Advantages:
- No beam alignment device required
- No anatomical restrictions
- Available for anatomical situations (ex. shallow palate,
large palatal torus, short lingual frenum)
Disadvantages:
- Image distortion
