INFLUENCE OF SODIUM-HYPOCHLORITE ON THE PERMEABILITY AND STRUCTURE OF CERVICAL HUMAN DENTIN

被引：35

作者：

BARBOSA, SV

SAFAVI, KE

SPANGBERG, LSW

机构：

[1] Department of Restorative Dentistry & Endodontology, University of Connecticut Health Center, Farmington, Connecticut

来源：

INTERNATIONAL ENDODONTIC JOURNAL | 1994年 / 27卷 / 06期

关键词：

CERVICAL RESORPTION; DENTIN; DENTIN PERMEABILITY; SODIUM HYPOCHLORITE;

D O I：

10.1111/j.1365-2591.1994.tb00274.x

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

The effect of 5% sodium hypochlorite and 35% hydrogen peroxide on dentine samples in vitro was investigated. It was demonstrated that both 5% NaOCl and 35% H2O2 depletes the dentine, which can be recorded as weight loss. Sodium hypochlorite removes approximately 14% of dry weight from dentine samples in 24 h; hydrogen peroxide is half as destructive. The hydraulic conductance (L(p)) of dentine after treatment with NaOCl is increased over 100%. It is suggested that the use of high concentrations of sodium hypochlorite during root canal treatment may negatively affect the integrity of the root canal wall thereby allowing increased access of caustic bleaching fluids to cervical vital tissues.

引用

页码：309 / 312

页数：4

共 16 条

[1]

Al-Nazhan S, External root resorption after bleaching: a case report, Oral Surgery, Oral Medicine, Oral Pathology, 72, pp. 607-609, (1991)

[2]

Brosjo M, Anderssen K, Berg JO, Lindskog S, An experimental model for cervical resorption in monkeys, Dental Traumatology, 6, pp. 118-120, (1990)

[3]

Cvek M., Lindvall AM, External root resorption following bleaching of pulpless teeth with oxygen peroxide, Endodontics and Denial Traumatology, 1, pp. 56-60, (1985)

[4]

Friedman S, Rotstein I, Libfield H, Stabholz A, Heling I, Incidence of external root resorption and esthetics in 58 bleached pulpless teeth, Endodontics and Dental Traumatology, 4, pp. 23-26, (1988)

[5]

Fuss Z, Szjakis S, Tagger M, Tubular permeability to calcium hydroxide and to bleaching agents, Journal of Endodontics, 15, pp. 362-364, (1989)

[6]

Hasselgren G, Olsonn B, Cvek M, Effects of calcium hydroxide and sodium hypochlorite on the dissolution of necrotic porcine muscle tissue, Journal of Endodontics, 14, pp. 125-127, (1988)

[7]

Lado EA, Stanley HR, Weisman M, Cervical resorption in bleached teeth, Oral Surgery, Oral Medicine and Oral Pathology, 55, pp. 78-80, (1983)

[8]

Madison S, Walton R, Cervical root resorption following bleaching of endodontically treated teeth, Journal of Endodontics, 16, pp. 570-574, (1990)

[9]

Moorer WR, Wesselink PR, Factors promoting the tissue dissolving capability of sodium hypochlorite, International Endodontic Journal, 15, pp. 187-196, (1982)

[10]

Outhwaite WC, McKenzie DM, Pashley DH, A versatile split chamber device for studying dentine permeability, Journal of Dental Research, 53, pp. 1503-1506, (1974)

← 1 2 →