title: The role of the esophagus in dental erosion.
abstract: OBJECTIVE
  The aim of this study was to measure lower esophageal sphincter pressure, sphincter length, and esophageal motility in patients with dental erosion and compare the results with measurements made in patients without gastroesophageal reflux or dental erosion.
  
  
  METHODS
  Lower esophageal sphincter length and esophageal motility were measured in 39 patients (age range, 15-74 years) with dental erosion through use of static esophageal pressure monitoring; the data were compared with those from 10 control subjects (age range, 26-46 years) with nonparametric statistical tests.
  
  
  RESULTS
  Median lower esophageal sphincter pressure was 9 mmHg (range, 0-26 mmHg) in the patients with erosion and 9.5 mmHg (range, 0 -14 mmHg) in the controls; there was no statistically significant difference between the two subject groups. Similarly, there was no statistically significant difference in esophageal length between the subject groups. There was a statistically significant difference between the groups (P =.01) in the measurement of esophageal motility; the median value was 8% (range, 0% to 100%) in the patients with erosion and 0% (range, 0% to 18%) in the controls.
  
  
  CONCLUSIONS
  It appears that esophageal motility in patients with dental erosion is more likely to be associated with low amplitude changes than with sphincter pressure alone. Poor esophageal motility may therefore be a risk factor in regurgitation erosion.
authors.affiliation: Division of Conservative Dentistry, Guy's, Kings and St Thomas' Dental Institute, Kings College, UK.
authors.forename: D W
authors.initials: DW
authors.lastname: Bartlett
authors.forename: D F
authors.initials: DF
authors.lastname: Evans
authors.forename: A
authors.initials: A
authors.lastname: Anggiansah
authors.forename: B G
authors.initials: BG
authors.lastname: Smith
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003627:Data Interpretation, Statistical; D015154:Esophageal Motility Disorders / Q000150:complications / Q000503:physiopathology; D004943:Esophagogastric Junction / Q000473:pathology / Q000503:physiopathology*; D005260:Female; D005764:Gastroesophageal Reflux / Q000150:complications* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010528:Peristalsis / Q000502:physiology; D011312:Pressure; D014077:Tooth Erosion / Q000209:etiology*