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> Introduction ۳
< ات۵ ریات رات رو
radiographic method for detecting
Lae تیار رت وتو LC
The purpose
ول ات ها
clinically
> ‘hidden’, estimate the depth of this
lesion&bitewing
> radiographs should always be
examined for occlusal caries in
> dentin.
> This examination will not
3 ذا ی یهد را رای وت:
nrecent.
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® Technical and quality aspects
° How is the radiograph taken?
غ3 55قهم كلاهلا 01 تموعط لوعخوعء عط[ ©
ate lila
° angles to the long axis of the tooth,
and tangentially through
® the contact.
® In the fully dentate patient the
0اباهطاک معط لمامعء ۵6 0۱۳66۲60 ۲
the contact between the second
Pelee lari mile celle
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Bitewing with film and with digital ۳
receptors
Digital radiography is now
1۱6۲6۵5۱۳9۱۷ ۰
advantages of digital
radiography :
¢ The facilities for density and
contrast can optimize the
quality and reduce retakes.
¢ The radiation dose is lower.
¢ No wet chemicals are involved
in processing.
Peo Ye To Tt th ee tt
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» disadvantages:
دییات ریت رت كددعماء اطع ها
cable make the system bulky
resulting in positioning problems,
تاد ره ریا ای دول ۱
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501
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Bd FE Tile فلت رده ترا
*Some factors have caused to
reevaluate the need for
radiographies:
*the decrease in caries prevalence
°Slow progression because of fluoride
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radiation, particularly for Children.
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۱ اتف ۳
e = no radiolucency
9 = radiolucency confined to the
outer
°® half of the enamel
#اقط عمعصما عغطغ دزأ یازا یی ٠.
of the enamel
» including lesions extending up to
the DEJ
Sma mm Mea
° broken DEJ without obvious spread
in the dentin
٠. = radiolucency with obvious
spread
et 2k es و
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ICRP
> No practice involving exposure
> to radiation should be adopted
unless it produces
> sufficient benefit to the exposed
individuals
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Technical quality of the ۳
radiographic examination
ده عون <
< ٠ عون 05 ۰
> use of radiography or the
type, the F-type
> use ofa facilitating
correct positioning
> radiation dose as much as possible.
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Mea le ee me وا
be lost before it can be detected in
the radiographs
> The shape, extent and location of
يلت تلك (os)
> Direction of the Xray. Overlapping
should be avoided.
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OMIT ت
of a lesion influence
its radiographic
depiction.
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Detection of approximal caries:bitewing te:
ST ate om dilate Willett] ol (moa ale my creado)
تن لیات
۰ ۲۳۵ 06۲ ۵0۲ 500۲۵۵۵۱ 6610
© Bitewing is not non-invasive method; unlike the probe
٠ عطغقء ذا كصمتكع! اندع ووأكمصو هال صا بأللذاهيا عط tele
تللننا
هط غأمصصق ومتوع! اعتممهمع فطع أه كعوهغد لالردع عطغ ردذ
سفنت
شد ات
* Judgments about cavitation
have to rely on clinical .
عط ۷۱06۲۵5۱۱۱۵۲65 ۱۷اجباعت وطزع]]۵ ۲۳۵ ۰
۷۳ 50اه صق ۱۱۱۵۵۲۵8 06۵۲۵,۵۷۵۲۵۵
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ل ا لل ا
lesion in 46;
(b) bitewing radiograph taken less than 2 years
VOLVO ل ل nea
diagnosis.
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Detection of occlusal
caries
ie hey
Se
| ۳ ۷ ۹
left second molar, a thin dark radiolucency.
(a)can be detected at the occlusal DEJ; (b) 8 years later the
same thin dark radiolucency representing the
csi
۳
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اع ننان! عقت بألا أكمعد معطوتط معتجط المع ها
ل لت لل لتك
< 5011 هط 0غ وتوعهع5 35 aoa ee)
radiography for detecting occlusal enamel
باه رکتز6۵۲ ۱۸۲۵۲۱۵۲ ۲۵ ۲۵۵۱۵9۲۵۳۵۳۷ ۲
detecting obvious dentin lesions.
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benefits of bitewing
* the extent and stage of lesion
* at what stage the lesions are
restored
» the quality of the radiographs and
the diagnosis
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LCA eae ee)
examination in children
and adolescents
وعود
> Age 8-9:second key age for
(۱29
وتات یا روت رون تا رات ها
در
et Loca Te | یا یات :ها
کار را بقل ییا و۱
< 2 ee رت وتات Meg lod
at risk of approximal
> caries.
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> Age 12-14 :about 20% of the
children have at least
> one approximal carious lesion
that will be overlooked
without
> bitewing radiography.
>» Age 15-16
>. The first 3-4 years after
tooth eruption and
establishment of approximal
contacts.
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