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In vitro evaluation of different techniques of enamel preparation for pit and fissure sealing.
J Adhes Dent 2003; 5(4):313-21JA

Abstract

PURPOSE

To compare the penetration and the imperviousness of two pit and fissure sealants according to surface treatments involving different cleaning procedures with or without subsequent acid etching.

MATERIALS AND METHODS

Two sealants were used: a resin-based sealant (Concise White Sealant) and a compomer-based material (Dyract Seal) coupled with an enamel-dentin bonding agent (Dyract Seal and Prime&Bond NT). Extracted molars (n = 120) were randomly divided into 12 groups: 4 control and 8 experimental groups that received different surface treatments. Pumice, alumina, or bicarbonate was used to clean the surfaces. Phosphoric acid or non-rinse conditioner was used as acid etching agents. After sealing, the Concise White Sealant groups were directly thermocycled for 1800 cycles, while the Dyract Seal groups were stored in water for one month before thermocycling. After apex sealing and varnish coating, the fillings were stained with silver nitrate and embedded. Three to 6 cross sections of 200 microm each were made per sample to assess both sealant penetration (% of the length of the fissure) and the imperviousness of the seal (scores method).

RESULTS

Concise White Sealant achieves a better enamel sealing than Dyract Seal when the teeth are treated with air abrasion or air polishing followed by etching. Acid etching is essential for good sealing, whatever the material and cleaning technique tested. Only the combination of air abrasion and phosphoric acid etching yielded a leak-free joint.

CONCLUSION

This study clearly shows that penetration and sealing are two different phenomena. Ideally, an efficient sealant must have a good sealing ability and a high rate of infiltration as well, but these two properties probably do not have the same clinical relevance. The imperviousness of the seal remains the most important requirement.

Authors+Show Affiliations

Department of Pediatric Dentistry, Faculté de Chirurgie Dentaire, Université René Descartes-Paris V, Montrouge, France.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

15008338

Citation

Courson, Frederic, et al. "In Vitro Evaluation of Different Techniques of Enamel Preparation for Pit and Fissure Sealing." The Journal of Adhesive Dentistry, vol. 5, no. 4, 2003, pp. 313-21.
Courson F, Renda AM, Attal JP, et al. In vitro evaluation of different techniques of enamel preparation for pit and fissure sealing. J Adhes Dent. 2003;5(4):313-21.
Courson, F., Renda, A. M., Attal, J. P., Bouter, D., Ruse, D., & Degrange, M. (2003). In vitro evaluation of different techniques of enamel preparation for pit and fissure sealing. The Journal of Adhesive Dentistry, 5(4), pp. 313-21.
Courson F, et al. In Vitro Evaluation of Different Techniques of Enamel Preparation for Pit and Fissure Sealing. J Adhes Dent. 2003;5(4):313-21. PubMed PMID: 15008338.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - In vitro evaluation of different techniques of enamel preparation for pit and fissure sealing. AU - Courson,Frederic, AU - Renda,Anna-Maria, AU - Attal,Jean-Pierre, AU - Bouter,Denis, AU - Ruse,Dorin, AU - Degrange,Michel, PY - 2004/3/11/pubmed PY - 2004/4/16/medline PY - 2004/3/11/entrez SP - 313 EP - 21 JF - The journal of adhesive dentistry JO - J Adhes Dent VL - 5 IS - 4 N2 - PURPOSE: To compare the penetration and the imperviousness of two pit and fissure sealants according to surface treatments involving different cleaning procedures with or without subsequent acid etching. MATERIALS AND METHODS: Two sealants were used: a resin-based sealant (Concise White Sealant) and a compomer-based material (Dyract Seal) coupled with an enamel-dentin bonding agent (Dyract Seal and Prime&Bond NT). Extracted molars (n = 120) were randomly divided into 12 groups: 4 control and 8 experimental groups that received different surface treatments. Pumice, alumina, or bicarbonate was used to clean the surfaces. Phosphoric acid or non-rinse conditioner was used as acid etching agents. After sealing, the Concise White Sealant groups were directly thermocycled for 1800 cycles, while the Dyract Seal groups were stored in water for one month before thermocycling. After apex sealing and varnish coating, the fillings were stained with silver nitrate and embedded. Three to 6 cross sections of 200 microm each were made per sample to assess both sealant penetration (% of the length of the fissure) and the imperviousness of the seal (scores method). RESULTS: Concise White Sealant achieves a better enamel sealing than Dyract Seal when the teeth are treated with air abrasion or air polishing followed by etching. Acid etching is essential for good sealing, whatever the material and cleaning technique tested. Only the combination of air abrasion and phosphoric acid etching yielded a leak-free joint. CONCLUSION: This study clearly shows that penetration and sealing are two different phenomena. Ideally, an efficient sealant must have a good sealing ability and a high rate of infiltration as well, but these two properties probably do not have the same clinical relevance. The imperviousness of the seal remains the most important requirement. SN - 1461-5185 UR - https://www.unboundmedicine.com/medline/citation/15008338/In_vitro_evaluation_of_different_techniques_of_enamel_preparation_for_pit_and_fissure_sealing_ DB - PRIME DP - Unbound Medicine ER -