A b s tr a c t : R e si n -h y dr o x y a p a ti t e m a t e ri a l h as b e e n d e v e l ope d t o o ve r c o me t•@ h•@ e•@ d•@ i•@ s•@ a•@ d•@ van•@t•@ a•@ g e s o f h y d r o x y a p a t i t e. T h i s m a t e ri a l is c o m p o s e d of 75%hy d ro x y a p a t ite,q u a r t z r e in f o r c ed f i l l er .T h e p ur p o s e o f th i s s t u dy w a s t o e xa m i n e t h e i nf l u e n c e o f t h e m a t e ri a l a n d t h e c o n s t i t u e nt s ; h y d ro x y a p a t it•@ e , B i s -G M A o n su r r o un d i n g b o n e ti s s u e h i s to l o g ic a l l y .C y l i n d r ic a l p i ec e ( 4 mm d i a m et e r •~ 10 m m l e n gt h ) o f e a c h m a t e r i al w a s p r e p a r ed , i m pl a n t ed i n f e mu r s o f s ix ad ul t m o n gr e l d og s . A t 2, 4, 12 we e ks a f t e r im p l a n t a t i o n, d e c a l c i fi e d h i s to l o g i c s e c t io n s w e r e e x a m i n ed m i c r o s co p i c a ll y .T h e r e su lt s w e re a s f o ll o w s :
T h e re s i n -h y dr o x y a p at i t e o r h y d r ox y a p a t it e a t 1 2 w e e k s p o st o p e r a ti v e l y s ho w e d d i r e c t c o n t a c t w i t h t h e s u r r ou n d i ng b o n e t i s s u e i n m o s t i n t er f a c e r e g io n bet w e e n e it h e r m a t e r i a l a n d b on e t i s s u e , w h i le i n s o me i n t e r f a c e re g i o n , f i b r o u s c o n n e ct i v e t i s s ue e x i s te d .
2.Bi s -G M A a t 1 2 w e e ks p o st o p e r at i v el y s h o w e d f i b r o u s co n n e c t iv e t i s s u e f re e o f i n f l a m mat o ry c e l l s i n m os t i n t e r f a c e r e gi o n b e tw e e n t he m a t e r i al a n d a d ja c e n t b o n e t i ss u e , w h i l e i n so m e i nt e r f a c e r e g i o n , t h i s m a te r i a l ha d d i r ec t c on t a c t w i t h t h e b on e t is s u e w i t h ou t i n te r v e n i ng f i b r o us c o n n ec t i v e t i s s ue .A b o v e r e s u l t s i n d i c at e d t h a t t h e r e sin -h y d r o xy a p a t i t e m a te r i a l w a s as bi o c o m p a t i b l e a s h y dr o x y a p at i t e , a n d s ug g e s t e d t h a t t h i s m a te r i a l
Botryoid odontogenic cyst was first described by Weathers and Waldron in 1973, and only a small num ber of cases have subsequently been reported in the literature.We report a case of a botryoid odontogenic cyst of the mandible in a 59-year-old woman and describe the clinical, radiographic, and histological features.
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