Mo1107 Differences of LES Impedance Planimetry in Laparoscopic Sleeve Gastrectomy Versus Laparoscopic Conversion From Gastric Banding to Sleeve Gastrectomy

Background:Among the extra-esophagealmanifestations of GERD, dental erosion is currently considered one of the most frequent. These dental erosions have a characteristic localization and may sometimes be the first symptom of the GERD. Wireless nasopharyngeal pH metry (ResTech pH probe) is a minimally invasive device for detection of oropharyngeal acid reflux.Aim: To ascertain whether adult patients with dental erosions (DE) have a higher incidence of reflux into the nasopharynx compared with controls using the ResTech phH probe.Materials and methods: A cross-sectional study was conducted among patients whom attend to the dental service at the Health Services Research Center in our institution. Dental erosion was classified by means of severity and anatomic location, according to the Eccles and Jenkins dental (0=no erosion present [control group];grade 1=loss of surface detail, with change confined to the enamel; grade 2=exposure of dentin affecting less than one third of the crown; and 3=exposure of dentin affecting one third or more of the crown). In all subjects eating habits and dental medical history (CPO index) was obtained and GERD symptoms were assessed using the GERD-Q questionnaire and the ISR index. In all subjects a Restech Dx-pH was performed and separate pH thresholds of 0.05). DE subjects had a higher prevalence of positive GERD-Q questionnaires (92% vs 42%, p=0.002) and also higher scores (45 vs 6, p=0.01). DE subjects had more number of reflux episodes at pH 5.0 and 4.5 compared to HC (p<0.05, Figure) . A positive correlation was found between the # of reflux episodes (pH 5.0 and 4.5) with the GERD-Q score (p=0.50 and 0.57). Conclusion: A relationship between DE and GERD was established by precise and accurate measurement of pH changes in the oral cavity using ResTech pH metry. This method could be an ideal tool for evaluation of GRED as cause of DE.