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Approximal secondary caries lesion progression, a 20-week in situ study
R Z Thomas1, J L Ruben, J J ten Bosch
1Department of Dentistry and Dental Hygiene, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands. R.Z.Thomas@med.umcg.nl
Caries Research
|August 24, 2007
Summary
Secondary caries lesion progression near composite restorations is similar to primary caries. Wall lesions were not observed next to composite, but were present next to acrylic resin, indicating differences in restorative material impact.
Area of Science:
- Dental science
- Cariology
- Restorative dentistry
Background:
- The definition and progression of secondary caries lesions, particularly outer and wall lesions, lack consensus.
- Understanding lesion behavior adjacent to dental restorations is crucial for effective treatment.
Purpose of the Study:
- To investigate if lesion progression is influenced by adjacent composite restorations.
- To determine if wall lesions develop at the composite-tooth interface.
Main Methods:
- Microradiography was used to assess lesion depth in enamel and dentin samples over 20 weeks.
- Samples included primary caries lesions and lesions adjacent to composite restorations in a simulated intraoral environment.
- Lesion depth was measured every 4 weeks.
Main Results:
- Secondary outer caries lesions progressed similarly to primary caries lesions.
- No significant difference in progression rate was found between secondary and primary lesions (p = 0.83).
- Wall lesions were observed adjacent to acrylic resin but not clearly adjacent to composite restorations.
Conclusions:
- Secondary outer caries lesions behave comparably to primary caries lesions.
- Composite restorations did not appear to promote distinct wall lesion formation at the tooth interface.
- Acrylic resin restorations, however, were associated with wall lesion development.