Espinosa FR, Espinosa SD

Language: Spanish
References: 19
Page: 5-11
PDF size: 165.25 Kb.

ABSTRACT

Dentin is a sensitive tissue and is a part of the pulp-dentin complex. The components of modern dental adhesives had the capacity of diffusion through the dentinal tubules reaching the pulp, thus causing irreversible inflammatory response.
For this study, preparations in two groups were made. The first group with deep preparation near to the pulp chamber and the second with the normal depth. Both groups were restored with 5th generation adhesive and composite resin materials. Samples were obtained and prepared for the SEM. Results showed that group 1 preparations had a range distance from the pulp chamber of 0.5 to 1 mm and the tubules impregnated with the adhesive reaching the pulp chamber with prolongations within. Group 2 preparations were at 2 to 2.5 mm from the pulp and tubule prolongations of the adhesive were found inside. In this group the adhesive penetration did not reach the pulp chamber.
It has been proved that the adhesives are not biocompatible and are toxic to the pulp. For that reason it is recommended to use and apply calcium hydroxide liners in deep cavities in order to assure a good seal and avoid the diffusion of adhesives into the pulp and the postoperative sensitivity.

REFERENCES

1. Christensen G. Should we be bonding all tooth restorations. JADA 1994; 11: 193-194.

2. Majör IA, Ferrari M. Pulp-dentin biology in restorative dentistry. Part. 6: Reactions to restorative materials, tooth-restoration interfaces, and adhesive techniques. Quintessence Int 2002; 33: 35-63.

3. Bränström M, Nordenvall KJ. Bacterial penetration, pulpal reaction and the inner surface of cocise enamel bond. Composite fillings in etched and unetched cavities. J Dent Res 1978; 57(1): 3-10.

4. Fusayama T. Factors and prevention of pulp irritation by adhesive composite resin restorations. Quintessence Int 1987; 18(9): 633-641.

5. Stanley HR, Going RE, Chauncey HH. Human pulp response to acid pretreatment of dentin and composite restorations. J Amer Dent Ass 1975; 91(10): 817-825.

6. Gerurtsen W. Biocompatibility of resin-modified filling materials. Crit Rev Oral Med 2000; 11(3): 333-55.

7. CRA, 2000; 4(1).

8. Camps J et al. Factors influencing pulpar response to cavity restorations. Dent Mater 2000; 16(6): 432-40.

9. Pashley DH et al. Effects of dentin permeability in vivo in the dog. Arch Oral Biol 1984; 29: 725.

10. Bränström M. Sensibility of dentine. Oral surgery, Oral medicine and Oral pathology 1966; 21: 517.

11. Bovillage HJ. J Dent Res 1996.

12. Pashley DH et al. Permeability of demineralized dentin to HEMA. Dent Mater 2000; 16(1): 7-14.

13. Hebling J, Giro EM. Human pulp response after an adhesive system application in deep cavities. J Dent 1999; 27: 557-60.

14. Guertsen W. Biocompatibility of resin-modified filling materials. Crit Rev Oral Biol Med 2000; 11(3): 333-55.

15. Costa CA, Teixeira HM. Do Nascimento, AB. Hebling, J. Biocompatibility of an adhesive system and 2-hydroxyethylmethacrylate. ASCD J Dent Child 1999; 66(5): 337-42, 294.

16. Mondelli J. Proteçâo do complexo dentinopulpar. Editorial Artes Médicas. Săo Paolo, Brasil. 1998.

17. Rakich DR, Wataha JC, Lefebvre CA, Weller RN. Effect of dentin bonding agents on the secretion of inflammatory mediators from macrophages. J Endod 1999; 25(2): 114-7.

18. Shuster GS, Caughman GB, Rueggeberg FA. Changes in cell phospholipids metabolism in vitro in the presence of HEMA and its degradation products. Dent Mater 2000; 16(4): 297-302.

19. Camps J, Dejou J, Remusat M, About I. Factors influencing pulpal response to cavity restorations. Dent Mater 2000; 16(6): 432-40.