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Pulpal response to different pulp capping methods after pulp exposure by air abrasion
Lina Maria Cardenas-Duque1, Makoto Yoshida, George Goto
1Department of Pediatric Dentistry, Nagasaki University, School of Dentistry, Japan.
The Journal of Clinical Pediatric Dentistry
|May 7, 2002
Summary
Air abrasion in pediatric dentistry risks pulpal exposure. Calcium hydroxide (Ca(OH)2) and Liner Bond II can induce dentin bridge formation with proper sealing, though Liner Bond II may delay healing.
Area of Science:
- Pediatric Dentistry
- Dental Materials Science
- Oral Biology
Background:
- Air abrasion is increasingly used in pediatric dentistry, offering ease of use but posing a risk of pulpal exposure due to lost tactile feedback.
- Calcium hydroxide (Ca(OH)2) is known to promote dentin bridge formation, but effective sealing is crucial for successful pulp capping.
- Evaluating alternative capping agents like Liner Bond II alongside Ca(OH)2 is important for understanding healing potential after air abrasion-induced pulpal exposures.
Purpose of the Study:
- To assess pulpal response following pulpal exposure induced by air abrasion.
- To evaluate the healing potential and dentin bridge formation using Ca(OH)2 or Liner Bond II as pulp capping agents.
- To compare the efficacy of different pulp capping strategies in a canine model.
Main Methods:
- Two hundred sixteen teeth from mixed-bred dogs were subjected to pulpal exposure via air abrasion or high-speed drilling followed by air abrasion.
- Teeth were assigned to three groups: Group A (air abrasion + Liner Bond II), Group B (air abrasion + Ca(OH)2), and Group C (control: high-speed + air abrasion + Ca(OH)2).
- Histopathological evaluation was performed at 7, 14, 30, and 60 days post-procedure, with statistical analysis using Analysis of Variance.
Main Results:
- Significant differences in inflammatory criteria were observed among groups at earlier time points, which resolved over time.
- Highly statistically significant differences (p<0.001) were found in odontoblastic layer organization and dentin bridge formation across all groups and observation periods.
- A positive correlation between odontoblastic layer organization and dentin bridge formation was noted, particularly after 30 days.
Conclusions:
- Dentin bridge formation is achievable with Ca(OH)2 or Liner Bond II when used as pulp capping agents with adequate sealing.
- The healing process, specifically dentin bridge formation, can be delayed when Liner Bond II is used as the capping agent compared to Ca(OH)2.
- Adequate sealing is a critical factor for successful pulp healing and dentin regeneration, regardless of the capping material used.