a bite-wing image includes?

1. the crown of maxillary and mandibular teeth
2. interproximal areas
3. areas of crestal bone on the same image

bite-wing technique is?

also know as the interproximal technique

Is a method used to examine the interproximal surfaces of teeth

Interproximal

between two adjacent surfaces

Interproximal examination

intraoral examination

used to inspect the crowns

of the both

maxillary and mandibular teeth

on a single image

Bite-wing receptor

Type of receptor used in interproximal examination

has "wing" or tab

Patient "bites" on the wings to stabilize the receptor

Alveolar bone

Bone that support

and

in cases the roots of teeth

crestal bone

coronal portion of alveolar bone

found between teeth

known as the alveolar crest

Horizontal bite-wing

receptor is place in the mouth

with the long portion of the receptor

in a horizontal direction

open contact

on a dental image,

open contact appear

as thin radiolusent line

between adjacent tooth surfaces

overlap contact

on the dental image

the area where the contact area of

one tooth is superimposed over the contact area of  a

adjacent tooth

vertical bite-wing

the bite wing receptor

is place in the mouth with the long portion of the

receptor in a vertical direction

Basic Principles of the Bite-wing technique

1. _{the receptor is place in the mouth parallel to the crown of max and man teeth}
2. _{the receptor stabilized when the patient bite on the bite-wing tab or the bite-wing beam aligment device}
3. _{the cental ray of the xray beam is directed to the contact of teeth, using a vertical angulation of +10 degrees}

As an alternative to a bean aligment device, a receptor can be fitted with?

a bite wing tab

also called a bite loop or bite tab

Bite-wing tab

a heavy paper board tab or loop that is fitted around an intraoral receptor

is used to stabilize the receptor during the procedure

bite wing tabs maybe used?

on horizontal or vertical bite wing projection

3 sizes of bite-wing receptors

size 0,2,3

size 0

is used to examine the posterior teeth of children with primary dentition

is always place with the long portion of the receptor in horizontal direction

2-5 years old child

Size 2

_{to examine the posterior teeth in adults and maybe place horizontally or vertically}

_{for most bite-wing exposure is place with the long portion of the receptor in a horizontal direction}

_{when a vertical posterior bite-wing exposure is indicated a size 2 is place with the long portion of the receptor in a vertical direction}

Size 3

is longer and narrower than the standard size 2 receptor and is use only for bite-wing exposure

Is not recommended with a size 3 overlap contact result coz of the difference in the curviture of the arch between the premolar and molar area

Angulation

describe the aligment of the central ray of the xray beam in both horizontal and vertical planes

Horizontal angulation

refer to the positioning

of the central ray in a horizontal or side to side plane

correct horizontal angulation

the contacts areas

on the exposed imagine appears open and

can be examine for evidence of caries

incorrect horizontal angulation

image with overlap interproximal

contact areas can not be

use to examine the interproximal areas of

teeth for evidance of carries

vertical angulation

up and down plane

patient preparation for bite-wings images

•  briefly explain the procedure to patient
• position pt. upright in the chair/adjust chair
• adjust the head rest to support and position the pt head/max is parallel to the floor / midsagittal(midline) is perpendicular to the floor
• place and secure the apron with thyroid collar
• have pt remove all object from the mouth
• eyeglases remove

Equipment preparation for bite-wing images

• set the exposure factors(kilovoltage, milliampriage, time) on the xray unit acording to the recommendations of the receptor manufacture

exposure sequence recommended for each side of the mouth

• expose the premolar bite-wing first (this receptor is easier for pt. to tolerate and less likely to evoque the gag reflects)
• expose the molar bite-wing last

receptor placement

the specific area where the receptor most be position before exposure

Guidelines for bite-wing receptor placement

• when using film the white side of the film always faces the tooth. the identification dot on the film as no significant in bite-wing film placement
• in posterior bite-wing series receptors are place horizontally of vertically
• when positioning the receptor, always center the receptor over the area to be examine
• asked pt. to slowly bite on the bite-wing tab or on the bite block of the beam aligment device

vertical bite-wing

can be used to examine the level of alveolar bone in the mouth often used as post treatment or follow up images for patients with bone lost due to periodontal disease

torus

a bony growth in the oral cavity

what size receptor is recommended for use with the bite-wing technique in the adult patients?

size 2

what size receptor is recommended to use with the bite-wing technique in pediatric patient with a primary dentition?

size 0 or 1

how is the patient head position before exposing a bite-wing receptor?

• upright position
• the pt. most be position such that the max arch is parallel to the floor and the midline plane is perpendicular to the floor

what condition is detected by the primary use of bite-wing images?

interproximal caries

size 3

what type of angulation is determined by the up and down movement of the positon indication device (PID)?

Vertical angulation

what type of angulation is determined by the side to side movement of the PID?

Horizontal angulation

when the central ray of the xray is not directed through the contact areas of teeth, what is seen on the resulting images?

overlap contact

when does a cone-cut result?

if is not center

which of the following describes the relationship of the receptor to max and man teeth in the bite-wing technique?

the receptor and teeth are parallel to each other

which of the following describes the primary use of the bite-wing radiograph image?

examination of the interproximal areas of teeth

which of the following is the correct vertical angulation used with the bite-wing technique and the bite tab?

+ 10 degrees