title: A comparative study of the susceptibility of cut and uncut enamel to erosive demineralization.
abstract: This study aimed to evaluate the susceptibility of cut and uncut enamel surfaces to an erosive challenge and to examine the resultant characteristics/morphological changes. Ten extracted human incisors were used for preparation of enamel samples, and samples were immersed in citric acid. After 3 (total 3 min) and 6 cycles (total 6 min) of erosive challenges, surface loss (SL) and morphological changes were measured using scanning microscopy and FIB-TEM. Ca release (CA) and surface hardness (SH) were measured using a calcium-sensitive electrode and hardness tester respectively. Mean values of all measurements were statistically analyzed by using a t-test. Uncut enamel samples had significantly lower SL and greater SH than cut enamel (p<0.01). Cut enamel samples after 3 cycles showed higher CA compared with those from uncut enamel samples (p<0.05). Cut enamel was shown to be more susceptible to acidic dissolution and deeper acid penetration than uncut enamel after erosive demineralization.
authors: Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.
authors: Wa Than
authors: WT
authors: Lin
authors: Yuichi
authors: Y
authors: Kitasako
authors: Syozi
authors: S
authors: Nakashima
authors: Junji
authors: J
authors: Tagami
mesh_terms: D019343:Citric Acid; D003743:Dental Enamel; D006244:Hardness; D006801:Humans; D012969:Sodium Fluoride; D017001:Tooth Demineralization; D014077:Tooth Erosion
chemical_list: D019343:Citric Acid; D012969:Sodium Fluoride