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Bleaching effect of sodium percarbonate on discolored pulpless teeth in vitro.
J Endod. 2000 Jan; 26(1):25-8.JE

Abstract

The purpose of this study was to evaluate the bleaching effect of sodium percarbonate on artificially stained pulpless teeth. Twenty extracted human mandibular premolars were stained by immersing them in human blood mixed with iron sulfide, and divided into three test groups and one control group. The following bleaching agents were used: sodium perborate mixed with 30% hydrogen peroxide (WB), sodium percarbonate mixed with distilled water (PW) or 30% hydrogen peroxide (PH). On days 5, 10, and 15, each pulp chamber was refilled with fresh bleaching paste. The L* (average lightness) of the midbuccal area of specimens was measured before and after staining, and on days 5, 10, 15, and 20 by colorimeter. The bleaching effect was evaluated by the lightness recovery rate (LRR) calculated from L*. WB showed the highest LRR among all groups, and PW and PH showed significantly higher LRR when compared with the control group. PW and PH were not significantly different. Results showed that sodium percarbonate had an obvious bleaching effect without hydrogen peroxide and indicated that it could be a safe intracoronal bleaching agent.

Authors+Show Affiliations

Department of Operative Dentistry, Hokkaido University School of Dentistry, North-13 West-7, Kita-ku, Sapporo 060-8586, Japan.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

11194360

Citation

Kaneko, J, et al. "Bleaching Effect of Sodium Percarbonate On Discolored Pulpless Teeth in Vitro." Journal of Endodontics, vol. 26, no. 1, 2000, pp. 25-8.
Kaneko J, Inoue S, Kawakami S, et al. Bleaching effect of sodium percarbonate on discolored pulpless teeth in vitro. J Endod. 2000;26(1):25-8.
Kaneko, J., Inoue, S., Kawakami, S., & Sano, H. (2000). Bleaching effect of sodium percarbonate on discolored pulpless teeth in vitro. Journal of Endodontics, 26(1), 25-8.
Kaneko J, et al. Bleaching Effect of Sodium Percarbonate On Discolored Pulpless Teeth in Vitro. J Endod. 2000;26(1):25-8. PubMed PMID: 11194360.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bleaching effect of sodium percarbonate on discolored pulpless teeth in vitro. AU - Kaneko,J, AU - Inoue,S, AU - Kawakami,S, AU - Sano,H, PY - 2001/2/24/pubmed PY - 2001/3/3/medline PY - 2001/2/24/entrez SP - 25 EP - 8 JF - Journal of endodontics JO - J Endod VL - 26 IS - 1 N2 - The purpose of this study was to evaluate the bleaching effect of sodium percarbonate on artificially stained pulpless teeth. Twenty extracted human mandibular premolars were stained by immersing them in human blood mixed with iron sulfide, and divided into three test groups and one control group. The following bleaching agents were used: sodium perborate mixed with 30% hydrogen peroxide (WB), sodium percarbonate mixed with distilled water (PW) or 30% hydrogen peroxide (PH). On days 5, 10, and 15, each pulp chamber was refilled with fresh bleaching paste. The L* (average lightness) of the midbuccal area of specimens was measured before and after staining, and on days 5, 10, 15, and 20 by colorimeter. The bleaching effect was evaluated by the lightness recovery rate (LRR) calculated from L*. WB showed the highest LRR among all groups, and PW and PH showed significantly higher LRR when compared with the control group. PW and PH were not significantly different. Results showed that sodium percarbonate had an obvious bleaching effect without hydrogen peroxide and indicated that it could be a safe intracoronal bleaching agent. SN - 0099-2399 UR - https://www.unboundmedicine.com/medline/citation/11194360/Bleaching_effect_of_sodium_percarbonate_on_discolored_pulpless_teeth_in_vitro_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0099-2399(05)60992-2 DB - PRIME DP - Unbound Medicine ER -