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Characteristics of non‐carious cervical lesions – an ex vivo study using micro computed tomography
Author(s) -
HUR B.,
KIM HC.,
PARK JK.,
VERSLUIS A.
Publication year - 2011
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.2010.02172.x
Subject(s) - enamel paint , coronal plane , gingival margin , dentistry , lesion , medicine , ex vivo , materials science , orthodontics , in vivo , anatomy , pathology , microbiology and biotechnology , biology
Summary The aetiology of non‐carious cervical lesions (NCCLs) is not well understood and still controversial. The aim of this ex‐vivo study was to examine the morphological characteristics of NCCLs for clinical evidence of enamel loss above the cemento‐enamel junction (CEJ) as suggested by the abfraction theory. Fifty extracted human teeth with various types of NCCLs were collected and scanned by micro computed tomography. The reconstructed three‐dimensional models were evaluated from multiple aspects, including longitudinal cross‐section series. The location of internal line angle and proximal exits of the lesions were evaluated in relation to the level of CEJ. The coronal margins of the lesions were inspected for evidence of enamel loss above the CEJ using the bucco‐lingual longitudinal sectional images. Coronal margins of the lesions were located along and/or under the CEJ for all of the 50 samples. In most of the lesions, regardless of lesion type, the proximal exits and internal line angles were located below the CEJ. This study did not detect clinical evidence of enamel loss above the occlusal margin of NCCLs as would have been expected according to the general abfraction mechanism.