|
KMID : 0362320100350010005
|
|
Journal of Korean Academy of Operative Dentistry
2010 Volume.35 No. 1 p.5 ~ p.12
|
|
|
PULP RESPONSE OF BEAGLE DOG TO DIRECT PULP CAPPING MATERIALS: HISTOLOGICAL STUDY
|
|
Bae Ji-Hyun
Kim Young-Kyun
Yun Pil-Young
Cho Byeong-Hoon
Choi Yong-Hoon
|
|
|
Abstract
|
|
|
|
The purpose of this study was to evaluate the pulp tissue reaction to direct pulp capping of mechanically exposed beagle dogs’pulp with several capping materials. A total of 36 teeth of 2 healthy beagle dongs were used. The mechanically exposed pulps were capped with one of the followings: (1) Mineral Trioxide Aggregate (MTA: ProRoot? MTA, Dentsply, Tulsa, USA), (2) Clearfil SE Bond (Dentin adhesive system: Kuraray, Osaka, Japan), (3) Ultra-Blend (Photo-polymerized Calcium hydroxide: Ultradent, South Jordan, USA), (4) Dycal (Quick setting Calcium hydroxide: LD Caulk Co., Milford, USA) at 7, 30, and 90 days before sacrificing. The cavities were restored with Z350 flowable composite resin (3M ESPE, St. Paul. MN, USA). After the beagle dogs were sacrificed, the extracted teeth were fixed, decalcified, prepared for histological examination and stained with HE stain. The pulpal tissue responses to direct pulp capping materials were assessed. In MTA, calcium hydroxide, and photo-polymerized calcium hydroxide groups, initial mild inflammatory cell infiltration, newly formed odontoblast-like cell layer and hard tissue bridge formation were observed. Compared with dentin adhesive system, these materials were biocompatible and good for pulp tissue regeneration. In dentin adhesive system group, severe inflammatory cell infiltration, pulp tissue degeneration and pulp tissue necrosis were observed. It seemed evident that application of dentin adhesive system in direct pulp capping of beagle dog teeth cannot lead to acceptable repair of the pulp tissue with dentine bridge formation. [J Kor Acad Cons Dent 35(1):5-12, 2010]
|
|
|
KEYWORD
|
|
|
Direct pulp capping, Pulp inflammation, Dentinal bridge, Histological evaluation, Beagle dog -Received 2009.9.8., revised 2009.10.1., accepted 2009.10.23.-
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
|
|