CO2 Laser Improves 45S5 Bioglass Interaction with Dentin

被引：63

作者：

Bakry, A. S. ^{[1
,2
]}

Takahashi, H. ^{[1
]}

Otsuki, M. ^{[1
]}

Sadr, A. ^{[3
]}

Yamashita, K. ^{[4
]}

Tagami, J. ^{[1
]}

机构：

[1] Tokyo Med & Dent Univ, Grad Sch, Dept Restorat Sci, Bunkyo Ku, Tokyo 1138549, Japan

[2] Univ Alexandria, Fac Dent, Conservat Dent Dept, Alexandria, Egypt

[3] Tokyo Med & Dent Univ, ICTB, Global Ctr Excellence Program, Dept Cariol & Operat Dent, Tokyo 1138549, Japan

[4] Tokyo Med & Dent Univ, Inst Biomat & Bioengn, Chiyoda Ku, Tokyo 1010062, Japan

来源：

JOURNAL OF DENTAL RESEARCH | 2011年 / 90卷 / 02期

关键词：

45S5; bioglass; CO2; laser; bioactive glass; AQUEOUS-SOLUTIONS; IN-VITRO; BRUSHITE; HYPERSENSITIVITY; HYDROXYAPATITE; TRANSFORMATION; IRRADIATION; CALCULUS; AGENTS;

D O I：

10.1177/0022034510387793

中图分类号：

R78 [口腔科学];

学科分类号：

100302 [口腔临床医学];

摘要：

Bioglass 45S5 is a bioactive glass that can create a layer of calcium-phosphate crystals on mineralized hard tissues. In this study, 45S5 bioglass was mixed with phosphoric acid and irradiated with CO 2 laser and examined as a possible aid in the treatment of dentin hypersensitivity. The dentinal surface modified by the aforementioned technique was chemically and micro-morphologically examined with a field emission scanning electron microscope (FE-SEM) equipped with an energy-dispersive x-ray spectroscope (EDS), and the crystalline structures of the examined dentinal surfaces were examined by x-ray diffraction (XRD). Moreover, the mechanical properties of the newly formed layer were examined by nanoindentation. The results showed that 45S5 bioglass could occlude the dentinal tubule orifices with calcium-phosphate crystals. The application of CO2 laser potentially improved the mechanical organization of these crystals.

引用

页码：246 / 250

页数：5

共 30 条

[1]

A case study of elemental and structural composition of dental calculus during several stages of maturation using SRXRF [J].