Basic study of the use of laser on detection of vertical root fracture

Kimura, Yuichi; Tanabe, Michihiko; Amano, Yoshikazu; Kinoshita, Jun-Ichiro; Yamada, Yoshishige; Masuda, Yoshiko

doi:10.1016/j.jdent.2009.07.005

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Volume 37, Issue 12 , Pages 909-912, December 2009

Basic study of the use of laser on detection of vertical root fracture

Yuichi Kimura
- Division of Endodontics, Department of Conservative Dentistry, Ohu University School of Dentistry, 31-1 Misumido, Tomita-machi, Koriyama-city, Fukushima 963-8611, Japan
- Corresponding author. Tel.: +81 024 932 8931x2524; fax: +81 024 931 0722.
Michihiko Tanabe
- Division of Endodontics, Department of Conservative Dentistry, Ohu University School of Dentistry, 31-1 Misumido, Tomita-machi, Koriyama-city, Fukushima 963-8611, Japan
Yoshikazu Amano
- Division of Endodontics, Department of Conservative Dentistry, Ohu University School of Dentistry, 31-1 Misumido, Tomita-machi, Koriyama-city, Fukushima 963-8611, Japan
Jun-Ichiro Kinoshita
- Department of Endodontics, Showa University Dental Hospital, Japan
Yoshishige Yamada
- Department of Endodontics, Showa University Dental Hospital, Japan
Yoshiko Masuda
- Department of Endodontics, Showa University Dental Hospital, Japan

Received 29 April 2009; received in revised form 4 July 2009; accepted 13 July 2009. published online 24 July 2009.

Abstract

Objective

Many methods are used to detect vertical root fractures, but most are not adequate for identification of incomplete fractures or cracks. The purpose of this study was to evaluate the effects of three detergents on detection of vertical root fractures by DIAGNOdent^® with methylene blue (MB) solution.

Methods

Vertical incomplete fractures were artificially created on the roots of extracted human teeth, the DIAGNOdent^® values (D values) recorded in the presence or absence of MB solution, and the effects of detergents on D values examined. The effects of 20% ethanol on enhancing detergent action were also investigated. Statistical analysis was performed using the Mann–Whitney U-test; a value of p<0.01 was considered significant.

Results

D values increased significantly when MB solution was used with 0.1% or 1.0% polyoxyethylene (10) octylphenyl ether compared to MB solution only.

Conclusion

These findings suggest that 0.1% or 1.0% polyoxyethylene (10) octylphenyl ether could be used as an enhancer for detection of vertical root fractures by DIAGNOdent^® using MB solution.

Keywords: Detection, Detergents, DIAGNOdent^®, Laser, Vertical root fracture