title: Composition of enamel pellicle from dental erosion patients.
abstract: Oral health is dependent upon a thin mobile film of saliva on soft and hard tissues. Salivary proteins adhere to teeth to form the acquired enamel pellicle which is believed to protect teeth from acid erosion. This study investigated whether patients suffering diet-induced dental erosion had altered enamel pellicles. Thirty patients suffering erosion were compared to healthy age-matched controls. Subjects wore a maxillary splint holding hydroxyapatite and human enamel blocks for 1 h. The acquired enamel pellicle was removed from the blocks and compared to the natural incisor pellicle. Basic Erosive Wear Examination scores confirmed that dental erosion was present in erosion patients and absent from healthy age-matched controls. Erosion patients had half the amount of proteins (BCA assay) within the acquired pellicle forming on splint blocks compared to normal controls (p < 0.05). In particular, statherin, a calcium-binding protein, was 35% less abundant (p < 0.05). Calcium concentration within the acquired pellicle was also reduced by 50% in erosion patients (p < 0.001). In contrast, the natural pellicle on the incisor had similar amounts of total protein in erosion patients and healthy controls. In summary, the formation of new acquired pellicles on surfaces was reduced in erosion patients, which may explain their greater susceptibility to acid erosion of teeth.
authors.affiliation: Salivary Research Unit, King's College London Dental Institute, London, UK.
authors.forename: G
authors.initials: G
authors.lastname: Carpenter
authors.forename: E
authors.initials: E
authors.lastname: Cotroneo
authors.forename: R
authors.initials: R
authors.lastname: Moazzez
authors.forename: M
authors.initials: M
authors.lastname: Rojas-Serrano
authors.forename: N
authors.initials: N
authors.lastname: Donaldson
authors.forename: R
authors.initials: R
authors.lastname: Austin
authors.forename: L
authors.initials: L
authors.lastname: Zaidel
authors.forename: D
authors.initials: D
authors.lastname: Bartlett
authors.forename: G
authors.initials: G
authors.lastname: Proctor
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002118:Calcium / Q000032:analysis; D002135:Calcium-Binding Proteins / Q000032:analysis; D002256:Carbonic Anhydrases / Q000032:analysis; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D003743:Dental Enamel / Q000737:chemistry; D044622:Dental Pellicle / Q000737:chemistry*; D017886:Durapatite / Q000737:chemistry; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D055257:Mucin-5B / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D012463:Saliva / Q000378:metabolism; D012471:Salivary Proteins and Peptides / Q000032:analysis; D012636:Secretory Rate / Q000502:physiology; D014077:Tooth Erosion / Q000378:metabolism*; D055815:Young Adult
chemical_list: D002135:Calcium-Binding Proteins; C524578:MUC5B protein, human; D055257:Mucin-5B; C018149:STATH protein, human; D012471:Salivary Proteins and Peptides; D010758:Phosphorus; D017886:Durapatite; D002256:Carbonic Anhydrases; D002118:Calcium