Effectiveness of Different Mechanical Methods on Dentin Caries Removal: Micro-CT and Digital Image Evaluation

Area of Science:

• Dentistry
• Dental Materials Science
• Oral Health

Background:

• Caries excavation aims to remove decayed tooth structure while preserving healthy tissue.
• Digital imaging and micro-CT offer advanced methods for quantitative analysis of caries removal.
• Evaluating the effectiveness and invasiveness of different excavation tools is crucial for minimally invasive dentistry.

Purpose of the Study:

• To compare the caries removal effectiveness (CRE) and minimal invasive potential (MIP) of carbide burs, excavators, and polymer burs.
• To utilize digital imaging and micro-CT analyses for objective assessment of caries excavation.
• To determine the optimal balance between caries removal and tissue preservation.

Main Methods:

• Twelve human molars with dentin caries were divided into three groups: carbide bur, excavator, and polymer bur.
• Sections were analyzed using digital imaging and micro-CT before and after excavation.
• Caries removal effectiveness (CRE) and minimal invasive potential (MIP) were quantified using image analysis software.

Main Results:

• Carbide burs demonstrated significantly higher caries removal effectiveness (CRE) compared to excavators and polymer burs.
• Polymer burs showed the lowest invasive potential (MIP) in micro-CT analysis, indicating a more conservative approach.
• Excavators and polymer burs had similar CRE and MIP in digital imaging, but were less effective than carbide burs.

Conclusions:

• Carbide burs are highly effective for caries removal but lack conservatism.
• Polymer burs and excavators are more conservative but may not completely remove carious dentin.
• The choice of caries excavation method involves balancing effectiveness with minimal invasiveness.