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 Differential  Diagnosis

1. Contacting teeth:

  a. Peri-apical 

  b. Peri-coronal   c. Inter-dental 

2. Multilocular 

3. Multiple lesion

4. Ground glass appearance

5. Floating teeth

. !elated to "issing teeth

#. Generali$ed decrease in bone densit%

&. 'un-ra% or (air on end appearance

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a. Peri-apical 

1. Radiolucent:(single tooth)

 Periapical Granulo"a  !adicular c%st

'urgical de)ect

 Periapical abscess 

'car tissue

a. Peri-apical 

  2. Mixed 

 Peri-apical ce"ental d%splasia

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1. raumatic !one c"st 

2. #entral $iant #ell $ranuloma

%. &'# . melo!lastoma

*. +ncisi,e canal c"st 

. $lo!ulomaxillar" c"st 

. nneur"mal !one c"st 

!. Peri-coronal  Radiolucent:

1. ,entigerous Follicularc%st  

2. Mural /"eloblasto"a 

3. /deno"atoid 0dontogenic *u"or /0*

4. /"eloblastic )ibro"a 

5. C0C 

. C0*

!. Peri-coronal 

 Mixed 

1. C0C 

2. C0*

3. /deno"atoid 0dontogenic *u"or /0*4-/"eloblastic )ibro odonto"e

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!. Peri-coronal  Radio-opaque

1. Co"ple odonto"e

2. Co"pund odonto"e

3. /"eloblastic )ibro-odonto"e

4. ,entino"a

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c. +nter-dental 

 Radiolucent 

1. ateral Periodontal c%st 2. Globulo"aillar% c%st 

3. *rau"atic 'olitar% bone c%st 

4. asopalatine duct c%st 

5. ateral !adicular c%st 

. /"eloblasto"a

#. /0*

c. +nter-dental 

 Radio-opaque1. Co"ple odonto"e

2. Co"pound odonto"e3. ,entino"a

4. Ce"ento ossi)%ing )ibro"a

5. Idiopathic osteo-sclerosis

. 'ali+ar% gland stone

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2- Multilocular 1. 0dontogenic eratoc%st 

2. /"eloblato"a

3. /neur%s"al bone c%st 4. 0dontogenic "%o"a5. Central Giant Cell Granulo"a

. Cherubis"

#. Central (e"angio"a

&. Mucoepider"oid carcino"a

%. Multiple lesion

a. Radiolucent 1. Gorlin s%ndro"e

2. Multiple "%elo"a

3. (and schuller christian disease

4. etterer se6ie

5. Peri-apical ce"ento-ossous d%splasia. Cherubis"

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%- Multiple lesion

!. Mixed 1. Peri-apical ce"ento-ossous d%splasia

2. Florid ce"ento-ossous d%splasia3. Fa"ilial ce"ento-ossous d%splasia

%. Multiple lesion

#. Radio-paque1. Paget7s disease

2. Gardner s%ndro"e

3. 0steopetrosis

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. $round $lass appearance1. Fibrous d%splasia

2-(%perparath%roidis"

*. /loating teeth

or ill defined radiolucent

 . Radiolucent . In)la""ator%:1. ocali$ed aggressi+e periodontitis

2. 0steo"%elitis

 II. Malignant:

1. Metastatic tu"ors

2. osinophilic granulo"a

3. '8ua"ous Cell Carcino"a

4.  Malignant 'ali+ar% Gland *u"or  5. 0steol%tic t%pe o) 0steo-sarco"a

http://www.usc.edu/hsc/dental/PTHL312abc/312b/11/IMGs/016bb.html

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*. /loating teeth!. Mixed  I. In)la""ator%:

0steo"%elitis

 II. Malignant:

1. Metastatic tu"ors breast9prostate

2. 0steoblastic t%pe o) osteo-sarco"a

3. Chondro-sarco"a

- Related to missing teeth1. !esidual c%st 

2. 0C 

3. /"eloblasto"a

4. Paradental c%st 

5. 'ub"andibular sali+ar% gland de)ect 'ta)ne bone c%st

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. $enerali0ed decrease in !one

densit"

1. (%perparath%rodis"2. 0steoporosis

3. *halasse"ia

4. 'icle Cell /ne"ia

5. 0steo"alacia ; !icets

.

. sun- ra" or hair on end appearance1. 'icle cell ane"ia

2. *halasse"ia3. 0steosarco"a

4. 6ing sarco"a

http://www.gentili.net/signs/images/400/skullss.jpg