University of Oulu

Karki, S.; Alaraudanjoki, V.; Päkkilä, J.; Laitala, M.-L.; Anttonen, V. Different Risk Factors for Erosive Tooth Wear in Rural and Urban Nepal: A National Study. Int. J. Environ. Res. Public Health 2021, 18, 7766.

Different risk factors for erosive tooth wear in rural and urban Nepal : a national study

Saved in:
Author: Karki, Saujanya1; Alaraudanjoki, Viivi1,2; Päkkilä, Jari3;
Organizations: 1Research Unit of Oral Health Sciences, University of Oulu, 90014 Oulu, Finland
2Finnish Student Health Services Oulu, 90570 Oulu, Finland
3Department of Mathematical Sciences, University of Oulu, 90014 Oulu, Finland
4Medical Research Centre, Oulu University Hospital and University of Oulu, POB 5281, 90014 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.3 MB)
Persistent link:
Language: English
Published: Multidisciplinary Digital Publishing Institute, 2021
Publish Date: 2021-09-01


Background: Erosive tooth wear (ETW) is of growing concern, but data on ETW among Nepalese children are scarce. The main aim of the study was to investigate the prevalence and severity of ETW among Nepalese schoolchildren. We also aimed to analyse the risk indicators for ETW according to location (rural/urban) and the role of obesity in the risk for ETW. Methods: This national study was conducted among 5–15-year-old Nepalese schoolchildren from different regions. Altogether, 1137 out of 1151 schoolchildren participated in both a clinical examination and a survey. ETW was recorded using the Basic Erosive Wear Examination. Results: The prevalence of ETW was 65%. One-fifth of the examined subjects were in need of preventive or restorative treatment. Living in an urban area and studying in a private school were protective factors for ETW, whereas consuming fruits frequently and using charcoal for tooth cleaning increased the odds for ETW. Central obesity was the strongest risk indicator for ETW among urban residents. Conclusions: ETW of low severity is common among Nepalese children and adolescents. Socio-demographic factors influence the prevalence of ETW in Nepal and there seems to be different factors that play a role in the ETW process according to location of residence.

see all

Series: International journal of environmental research and public health
ISSN: 1661-7827
ISSN-E: 1660-4601
ISSN-L: 1661-7827
Volume: 18
Issue: 15
Article number: 7766
DOI: 10.3390/ijerph18157766
Type of Publication: A1 Journal article – refereed
Field of Science: 313 Dentistry
Copyright information: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (