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01.12.2015 | Research article | Ausgabe 1/2015 Open Access

BMC Oral Health 1/2015

Awareness and knowledge of dental erosion among Yemeni dental professionals and students

BMC Oral Health > Ausgabe 1/2015
Amin Al-Ashtal, Anders Johansson, Ridwaan Omar, Ann-Katrin Johansson
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​s12903-015-0103-x) contains supplementary material, which is available to authorized users.

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

AA carried out the study design, data collection, data analysis and writing of the article. AJ contributed to the data analysis, study planning, interpretation of the data and writing of the manuscript. RO was involved in the study planning, interpretation of data, writing and review of the manuscript. AKJ was involved in study planning, interpretation of the data, critical review and writing of the manuscript. All authors have read and approved the final manuscript.



This study explored Yemeni dentists’ and dental students’ knowledge about the associated factors, approaches to diagnosis and preventive methods of dental erosion (DE), as well as any associations between DE awareness and some potentially related variables.


A self-administered questionnaire was distributed to general dental practitioners (n = 323) in Sanaa and to fifth year dental students (n = 97) at the University of Science and Technology, Sanaa, Yemen during the period from July to November 2013. Descriptive and logistic regression analyses were conducted.


Overall response rate was 79 %. Results indicated that 61 % of respondents learned about DE from dental school, 27 % from their own studies and the rest from continuing education courses and the media. DE was reportedly most frequently seen on incisors by 46 % of respondents and on premolars and molars by 24 %. While 48 % reported DE to be more common in male patients, no gender differences were reported by 20 % of respondents. Acidic drinks were believed to be causative factors for DE by 41 % of dentists and 52 % of students, while 90 % of respondents believed that patients’ dietary history is important during DE diagnosis. As preventive measures for DE, reduction of acidic drink consumption was advised by 51 % of respondents while only 37 % advised their patients to use fluoridated toothpastes. Younger respondents (≤35 years) were more likely to identify the commonly-known causative factors for DE (P = 0.024). Twenty-seven percent of the respondents reportedly used an index to grade DE. Dental students were more likely than dentists to use such an index (P <0.001) and to more frequently advise their patients to reduce intake of acidic drinks (P = 0.02) compared to dentists.


In-depth knowledge about causative factors, diagnosis and preventive methods of DE was apparent among only half the respondents and approaches to early diagnosis were insufficient. There would appear to be an urgent need for enhancing awareness and knowledge about DE within the Yemeni dental community.
Additional file 1: Questionnaire on awareness and knowledge of dental erosion. (PDF 218 KB)
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