All teeth included in this study were extracted for orthodontic purposes.
After extraction at 7 and 30 days, the teeth were fixed, sectioned and stained (H&E) and (gram stain) for Histological & Microbial Study. By using light microscopy.
Results: the table below shows the histological results according to the two kinds of restorations (Dycal-capped teeth, dentin bonded teeth) after 7 and 30 days.
|
Grope |
Time of Extraction |
No. of teeth |
Odontoblast Vocubularity |
The Degree of Inflammatory Reaction |
Congestion |
Fibrosis |
||||||
|
1 |
2a |
2c |
3 |
4 |
1 |
2 |
3 |
|||||
|
Dentin Bonded Teeth |
7Days |
8 |
7 |
3 |
0 |
0 |
0 |
0 |
7 |
5 |
0 |
0 |
|
30 Days |
8 |
6 |
4 |
0 |
2 |
0 |
0 |
7 |
7 |
0 |
0 |
|
|
Dycal Capped Teeth |
7Days |
8 |
6 |
4 |
0 |
0 |
0 |
0 |
5 |
4 |
0 |
0 |
|
30 Days |
8 |
1 |
2 |
0 |
0 |
0 |
0 |
2 |
2 |
0 |
0 |
|
After 7 days, no significant differences showed between the two groups (P<0.05).
After 30 days, Dycal-capped teeth show less histological changes than Dentin bonded teeth (P>0.05).
The microbial results were negative for both groups of this study.
Conclusions:
The results of this study suggest to use calcium hydroxide as a liner in deep cavities only to limit the non-desirable effects of the dentin bonding agent on the pulp.