TY - JOUR T1 - A comparative study of ultrasonic direct contact, immersion, and layer resonance methods for assessment of enamel thickness in teeth JO - P I MECH ENG J-J ENG UR - http://eprints.whiterose.ac.uk/94771/ PY - 2010/01/01 AU - Dwyer-Joyce RS AU - Goodman MA AU - Lewis R ED - DO - DOI: 10.1243/13506501JET665 VL - 224 IS - J6 SP - 519 EP - 528 Y2 - 2025/08/30 ER -