Micro-computerized tomography assessment of fluorescence aided caries excavation (FACE) technology: comparison with three other caries removal techniques

Authors

  • X Zhang,

    1. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Chengdu, China
    2. West China Hospital of Stomatology, Sichuan University, Chengdu, China
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  • R Tu,

    1. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Chengdu, China
    2. West China Hospital of Stomatology, Sichuan University, Chengdu, China
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  • W Yin,

    1. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Chengdu, China
    2. West China Hospital of Stomatology, Sichuan University, Chengdu, China
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  • X Zhou,

    1. Institute of Dental Research, Westmead Millennium Institute and Centre for Oral Health, Westmead Hospital and the Faculty of Dentistry, The University of Sydney, New South Wales, Australia
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  • X Li,

    1. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Chengdu, China
    2. West China Hospital of Stomatology, Sichuan University, Chengdu, China
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  • D Hu

    Corresponding author
    1. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Chengdu, China
    2. West China Hospital of Stomatology, Sichuan University, Chengdu, China
    • Address for correspondence:

      Professor Deyu Hu

      State Key Laboratory of Oral Diseases

      West China Hospital of Stomatology

      Sichuan University

      Chengdu 610041

      China

      Email: hudeyu@vip.sina.com

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Abstract

Background

The aim of this study was to determine the caries removal effectiveness (CRE) and minimal invasiveness potential (MIP) of four dentine caries removal methods.

Methods

After carious molars were scanned using micro-computerized tomography (micro-CT), dentine caries were removed by fluorescence aided caries excavation (FACE) technology, laser induced fluorescence (LIF), chemomechanical excavation (CME), and conventional excavation (CE). Micro-CT was then repeated. CRE was determined based on the volume of residual caries/initial caries (RC/IC) and the mean mineral density (MD) at the cavity floor. MIP was determined by measuring the volume of the prepared cavity/initial cavity (PC/IC).

Results

Among the four groups, the LIF group had the smallest RC/IC (0.08), the highest mean MD at the cavity floor (1.32 g/cm3) and the highest MIP (4.47). The CME group had the highest RC/IC (0.24), the lowest mean MD (1.01 g/cm3) and the lowest MIP (2.23). The CE group exhibited a more acceptable CRE (RC/IC = 0.13, mean MD = 1.21 g/cm3) but had a higher MIP (3.95). Both the CRE and MIP parameters of FACE technology were the second most acceptable (RC/IC = 0.12, mean MD = 1.13 g/cm3, MIP = 3.20) and did not differ significantly from the most acceptable.

Conclusions

FACE is an effective caries removal technology for removing infected dentine without significantly increasing cavity size.

Ancillary