In vitro study of root fracture treated by CO2 laser and DP-bioactive glass paste

Yin Lin Wang; Bor Shiunn Lee; Ching Li Tseng; Feng Huei Lin; Chun Pin Lin

doi:10.1016/S0929-6646(08)60007-8

In vitro study of root fracture treated by CO₂ laser and DP-bioactive glass paste

Yin Lin Wang, Bor Shiunn Lee, Ching Li Tseng, Feng Huei Lin, Chun Pin Lin

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Background/Purpose: An ideal material has yet to be discovered that can successfully treat vertical root fracture. Therefore, the purpose of this study was to use a continuous-wave CO₂ laser of medium-energy density to fuse DP-bioactive glass paste (DPGP) to vertical root fracture. Methods: The DP-bioglass powder was based on a Na₂O-CaO-SiO₂-P₂O₅ system and it was mixed with phosphoric acid (65% concentration) with a powder/ liquid ratio of 2 g/4 mL to form DPGP. The interaction of DPGP and dentin was analyzed by means of X-ray diffractometer (XRD) and differential thermal analysis/thermogravimetric analysis (DTA/TGA). Root fracture line was filled with DPGP followed by CO₂ laser irradiation and the result was examined by scanning electron microscopy (SEM). Results: The main crystal phase of DPGP was monocalcium phosphate monohydrate (Ca(H₂PO₄)₂·H₂O) and the phase transformed to dicalcium phosphate dihydrate (CaHPO₄·2H₂O) after mixing DPGP with dentin powder (DPG-D). Additionally, γ-Ca₂P₂O₇ and β-Ca₂P₂O₇ were identified when DPG-D was lased by CO₂ laser. The reaction temperature was between 500°C and 1100°C. SEM results demonstrated that the fracture line was effectively sealed by DPGP. Conclusion: The chemical reaction of DPGP and dentin indicated that DPGP combined with CO₂ laser is a potential regimen for the treatment of vertical root fracture.

Original language	English
Pages (from-to)	46-53
Number of pages	8
Journal	Journal of the Formosan Medical Association
Volume	107
Issue number	1
DOIs	https://doi.org/10.1016/S0929-6646(08)60007-8
Publication status	Published - Jan 2008

Keywords

CO
DP-bioactive glass paste
Laser
Vertical root fracture

ASJC Scopus subject areas

General Medicine

Access to Document

10.1016/S0929-6646(08)60007-8

Cite this

@article{884d82f9e58348a7a96d9aa4e2a3169c,

title = "In vitro study of root fracture treated by CO2 laser and DP-bioactive glass paste",

abstract = "Background/Purpose: An ideal material has yet to be discovered that can successfully treat vertical root fracture. Therefore, the purpose of this study was to use a continuous-wave CO2 laser of medium-energy density to fuse DP-bioactive glass paste (DPGP) to vertical root fracture. Methods: The DP-bioglass powder was based on a Na2O-CaO-SiO2-P2O5 system and it was mixed with phosphoric acid (65% concentration) with a powder/ liquid ratio of 2 g/4 mL to form DPGP. The interaction of DPGP and dentin was analyzed by means of X-ray diffractometer (XRD) and differential thermal analysis/thermogravimetric analysis (DTA/TGA). Root fracture line was filled with DPGP followed by CO2 laser irradiation and the result was examined by scanning electron microscopy (SEM). Results: The main crystal phase of DPGP was monocalcium phosphate monohydrate (Ca(H2PO4)2·H2O) and the phase transformed to dicalcium phosphate dihydrate (CaHPO4·2H2O) after mixing DPGP with dentin powder (DPG-D). Additionally, γ-Ca2P2O7 and β-Ca2P2O7 were identified when DPG-D was lased by CO2 laser. The reaction temperature was between 500°C and 1100°C. SEM results demonstrated that the fracture line was effectively sealed by DPGP. Conclusion: The chemical reaction of DPGP and dentin indicated that DPGP combined with CO2 laser is a potential regimen for the treatment of vertical root fracture.",

keywords = "CO, DP-bioactive glass paste, Laser, Vertical root fracture",

author = "Wang, {Yin Lin} and Lee, {Bor Shiunn} and Tseng, {Ching Li} and Lin, {Feng Huei} and Lin, {Chun Pin}",

note = "Funding Information: This study was supported by a grant (NSC 95-2314-B-002-213) from the National Science Council of Taiwan.",

year = "2008",

month = jan,

doi = "10.1016/S0929-6646(08)60007-8",

language = "English",

volume = "107",

pages = "46--53",

journal = "Journal of the Formosan Medical Association",

issn = "0929-6646",

publisher = "Elsevier B.V.",

number = "1",

}

TY - JOUR

T1 - In vitro study of root fracture treated by CO2 laser and DP-bioactive glass paste

AU - Wang, Yin Lin

AU - Lee, Bor Shiunn

AU - Tseng, Ching Li

AU - Lin, Feng Huei

AU - Lin, Chun Pin

N1 - Funding Information: This study was supported by a grant (NSC 95-2314-B-002-213) from the National Science Council of Taiwan.

PY - 2008/1

Y1 - 2008/1

N2 - Background/Purpose: An ideal material has yet to be discovered that can successfully treat vertical root fracture. Therefore, the purpose of this study was to use a continuous-wave CO2 laser of medium-energy density to fuse DP-bioactive glass paste (DPGP) to vertical root fracture. Methods: The DP-bioglass powder was based on a Na2O-CaO-SiO2-P2O5 system and it was mixed with phosphoric acid (65% concentration) with a powder/ liquid ratio of 2 g/4 mL to form DPGP. The interaction of DPGP and dentin was analyzed by means of X-ray diffractometer (XRD) and differential thermal analysis/thermogravimetric analysis (DTA/TGA). Root fracture line was filled with DPGP followed by CO2 laser irradiation and the result was examined by scanning electron microscopy (SEM). Results: The main crystal phase of DPGP was monocalcium phosphate monohydrate (Ca(H2PO4)2·H2O) and the phase transformed to dicalcium phosphate dihydrate (CaHPO4·2H2O) after mixing DPGP with dentin powder (DPG-D). Additionally, γ-Ca2P2O7 and β-Ca2P2O7 were identified when DPG-D was lased by CO2 laser. The reaction temperature was between 500°C and 1100°C. SEM results demonstrated that the fracture line was effectively sealed by DPGP. Conclusion: The chemical reaction of DPGP and dentin indicated that DPGP combined with CO2 laser is a potential regimen for the treatment of vertical root fracture.

AB - Background/Purpose: An ideal material has yet to be discovered that can successfully treat vertical root fracture. Therefore, the purpose of this study was to use a continuous-wave CO2 laser of medium-energy density to fuse DP-bioactive glass paste (DPGP) to vertical root fracture. Methods: The DP-bioglass powder was based on a Na2O-CaO-SiO2-P2O5 system and it was mixed with phosphoric acid (65% concentration) with a powder/ liquid ratio of 2 g/4 mL to form DPGP. The interaction of DPGP and dentin was analyzed by means of X-ray diffractometer (XRD) and differential thermal analysis/thermogravimetric analysis (DTA/TGA). Root fracture line was filled with DPGP followed by CO2 laser irradiation and the result was examined by scanning electron microscopy (SEM). Results: The main crystal phase of DPGP was monocalcium phosphate monohydrate (Ca(H2PO4)2·H2O) and the phase transformed to dicalcium phosphate dihydrate (CaHPO4·2H2O) after mixing DPGP with dentin powder (DPG-D). Additionally, γ-Ca2P2O7 and β-Ca2P2O7 were identified when DPG-D was lased by CO2 laser. The reaction temperature was between 500°C and 1100°C. SEM results demonstrated that the fracture line was effectively sealed by DPGP. Conclusion: The chemical reaction of DPGP and dentin indicated that DPGP combined with CO2 laser is a potential regimen for the treatment of vertical root fracture.

KW - CO

KW - DP-bioactive glass paste

KW - Laser

KW - Vertical root fracture

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