Reaction of rat connective tissue to implanted dentin tube filled with mineral trioxide aggregate, Portland cement or calcium hydroxide.
The subject of this study was to observe the rat subcutaneous connective tissue reaction to implanted dentin tubes filled with mineral trioxide aggregate, Portland cement or calcium hydroxide. The animals were sacrificed after 7 or 30 days and the undecalcified specimens were prepared for histological analysis with polarized light and Von Kossa technique for mineralized tissues. The results were similar for the studied materials. At the tube openings, there were Von Kossa-positive granules that were birefringent to polarized light. Next to these granulations, there was an irregular tissue like a bridge that was Von Kossa-positive. The dentin walls of the tubes exhibited in the tubules a structure highly birefringent to polarized light, usually like a layer and at different depths. The mechanism of action of the studied materials has some similarity.
Holland
R
R
Faculty of Dentistry of Araçatuba, UNESP, Araçatuba, SP, Brazil. rholland@foa.unesp.br
de Souza
V
V
Nery
M J
MJ
Faraco Júnior
I M
IM
Bernabé
P F
PF
Otoboni Filho
J A
JA
Dezan Júnior
E
E
D017607:Aluminum Compounds / Q000494:pharmacology*; D000818:Animals; D017610:Calcium Compounds / Q000494:pharmacology*; D002126:Calcium Hydroxide / Q000494:pharmacology*; D002467:Cell Nucleus / Q000648:ultrastructure; D004396:Coloring Agents; D003238:Connective Tissue / Q000473:pathology; D003738:Dental Cements / Q000494:pharmacology*; D003804:Dentin / Q000187:drug effects* / Q000473:pathology; D003809:Dentin, Secondary / Q000139:chemically induced* / Q000473:pathology; D004338:Drug Combinations; D005347:Fibroblasts / Q000473:pathology; D005456:Fluorescent Dyes; D015726:Giant Cells / Q000473:pathology; D006801:Humans; D008859:Microscopy, Polarization; D009504:Neutrophils / Q000473:pathology; D010087:Oxides / Q000494:pharmacology*; D051381:Rats; D017640:Silicates / Q000494:pharmacology*; D012867:Skin / Q000473:pathology*; D013997:Time Factors
D017607:Aluminum Compounds; D017610:Calcium Compounds; D004396:Coloring Agents; D003738:Dental Cements; D004338:Drug Combinations; D005456:Fluorescent Dyes; D010087:Oxides; D017640:Silicates; C086631:mineral trioxide aggregate; D002126:Calcium Hydroxide