Adenomatoid odontogenic tumor originated in the periodontal ligament Oral oncology Extra 42,268-271(2006)
Bruno correia Jham et al.
Department of Oral Surgery, Oral Medicine and Oral Pathology, School of Dentistry, Brazil
Intern E
Summary
Adenomatoid odontogenic tumor (AOT) hamartomatous , non-invasive
! " # $ % & ' ( )* + ,
follicular-extrafollicular-peripheral
./ 0 1 2 3 4 5& 6 ( * + AOT)7 8 )originperiodontal ligament
9 : ; < = > ? @ gingival swellingA B C )D E F Gperiodontal ligament H I J K L M clinical diagnosisperipheral ossifying fibromaN O P Q R P C D E F GAOT.S T < 115U )V W X Y F G recurrent)Z .
Introduction
Adenomatoid odontogenic tumor (AOT)[ \ odontogenic tumors) 2.2–13%]
F .^ _ & ` )7 a b 11c20d e f & g 7 h i 30d " j k l m
F n & o p : ,mq1:2r ' F .anterior maxilla
1. follicular- central intrabony lesion associated with unerupted tooth (70s)
2. extrafollicular- intra-osseous lession but unrelated to an unerupted tooth, and represents 25% of all AOTs
3. peripheral- intra-osseous lesion,.tgingival tissueu < )& g ( )* + v w
3 4 x y z { )7 8| 188
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Case report
15d o : ; .2005^ U ) the Stomatology Clinic of the UniversidadeFederal de Minas Gerais (UFMG)
Chief complaint:
A 9-month asymptomatic gingival swelling.
/ : ; . w S 3^ e
D E :
(A) j L ¡ ¢ £ ¤¥ ¦ gingiva§ ¨ © ª p 2cm)«
.¬ anterior maxillary gingival )® ¯ ° ± ¨ ² ³ )´ µ
(B)A B C ! " ¶ · PDL¸ ¹ º » ¼ u l ½ ¾ H I K ) $
(C).N O ¿ Q )i À Á F GÂ 57 Ã Ä Å .periodontal ligamentf l Æ $ tooth12)Ç È L É Ê
(D) j " curette¿ Q k Ë Ì excisional biopsy.
(A) j F Godontogenic epitheliumÍ C J Î J 4 G (haematoxylin–eosin stain.200Ï Ð ).
(B)$ Î J )odontogenic epithelial cells ? Ñ cuboidal cellÒ Ó ½
splindle-shaped cells $ Ô Õ ½ eosinophilic J } Ö × )H I K L 4 G(haematoxylin–eosin stain; 400x magnification).
(C)} Ö × H I K L ¤½ duct-like arrangement were present (arrow heads) (haematoxylin–eosin stain; 400 xmagnification).
(A) i 115U V W j k Ø F G Ù F )Z (B) ' ) periodontal ligament
Clinical diagnosisperipheral ossifying fibroma.
Finial diagnosis : extrafollicular AOT
Discussion
AOT % } Ú ) clinicotopographic forms: follicular, extrafollicular and peripheral
v w  5case XÛ Ü Ý N O Á X F G| Ä Å .periodontal ligament\ " extrafollicular AOTÞ Y ß + )XÛ G| Æ $ ¥ ¦ É
» Ê u Y É à á . â j ã & ä peripheral AOT ä å æ .ç
gingiva)fibroma-epulis\ " Â 5caseÚ > è intra- osseous¤peripheral AOT
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extrafollicular AOT! é F .45} Ú ) ê
above, between, superimposed at midroot level, or superimposed at apex level of erupted teeth. Philipsen et al.
ë ì í \ )AOTX G© î )À ï ð \ * + AOT) ê ñ ,
ò ó )N O P Q j curettageô õ j 7505casee Á | 35Ù F u  ö 3
4 )case.N O ÷ Q e R V W 115U ø Y Ù F )Z ù
v w AOT)ú originû ½ ü ý odontogenic tumor
þ Þ þ )follicular type AOT! é tdentigerous cyst
Á )odontogenic epitheliumu < Dental lamina remnantsø è F # )é
· ½ F $ peripheral type of benign odontogenic tumor.
! é $ extrafollicular AOT
AOT origin
epithelial odontogenic
ectomesenchyme odontogenic
!!!! mixed odontogenic
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: AOTcompletely benign, ?
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!!!!
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