Exploratory Trial to Evaluate the Hydroxyapatite Layer Formed by a New Dental Treatment System

Ryo Akatsuka,Keiichi Sasaki,Chie Kayaba,Tomonori Hoshi,Kuniyuki I Zumita,Koji Ikeda,Ayako Nishiyama,Satoki Kadota,Tsunemoto Kuriyagawa

doi:10.4236/ojst.2015.512034

Ryo Akatsuka, Keiichi Sasaki + Show 7 more

Open Access

https://doi.org/10.4236/ojst.2015.512034

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Abstract

Objective: A powder jet deposition (PJD) process can be used to create a thick hydroxyapatite (HA) layer on the human tooth surface. The purpose of this exploratory trial was to evaluate the safety and efficacy of the hydroxyapatite layer formed by a new dental treatment system for cases of caries, dentin hypersensitivity, or discolored teeth. Methods: A single facility, non-blinded study comparing before and after treatment interventions, without a comparative control, was conducted. A rubber dam was attached to the teeth followed by the application of Vaseline to the gingival margins. Extra- and intra-oral vacuums and a saliva discharge tube were used to spray HA powder over the target site with the PJD equipment. Results: The formation of an HA layer tended to reduce pain on exposure to cold water and air in the cases with caries, and increase brightness and satisfaction in the cases with tooth discoloration. The pain on exposure to air was significantly reduced in the cases with dentin hypersensitivity. PJD was not observed to cause any inflammation of the surrounding gingiva or pulpal symptoms. Conclusions: HA is anticipated to reduce the need for repeat treatment by offering superior compatibility with the tooth substance when compared with other dental materials.

Highlights

Treatment of dental caries generally involves carious tissue removal, followed by filling the cavity with a dental restorative material
Various treatments have been used to control dentin hypersensitivity, the results have proven to be unreliable so far [2]
The results suggest that this material may be more effective in managing dentin hypersensitivity than other over-the-counter hypersensitivity suppression materials

Summary

Introduction

Treatment of dental caries generally involves carious tissue removal, followed by filling the cavity with a dental restorative material. Various treatments have been used to control dentin hypersensitivity, the results have proven to be unreliable so far [2]. There has been an increased demand for the treatment of discolored teeth due to esthetic reasons [3]. Treatments such as tooth bleaching, ceramic crowns, and porcelain laminate veneer restoration are being performed. Dentin hypersensitivity may develop due to these treatment methods, making it necessary to perform additional invasive procedures on the tooth [4]

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Discussion

Conclusion