_1594797062 1594797062 Editor editor.jddt@gmail.com UJPR Universal Journal of Pharmaceutical Research Univ J Pharm Res 2456-8058 07 15 2020 Noha Jamal Ahmed Mutaher Khaled A AL-Haddad Ameen Abdullah Yahya Al-Akwa Mohammed A Al-labani Hassan Abdulwahab Al-Shamahy https://orcid.org/0000-0001-6958-7012 Abdul Qader Mohammed Qasem Zabara Hussien Mohammed Shogaa Al-deen Objectives: The current study was conducted to reveal the prevalence and causes of traumatic dental injuries to permanent anterior teeth among mixed dentition of schoolchildren in Sana'a City, Yemen. Methods: A cross-sectional study was performed on 1252 schoolchildren aged 7-12 years in three districts of Sana'a city, Yemen. They numbered 700 males and 552 females from 26 randomly selected public and private schools. Clinical examination of permanent anterior teeth was done according to the classification of Ellis modified by Fried. Results: Prevalence of TDI was 10.30%, with a male ratio of 4.8: female 1, (P <0.05). Most of the children suffered only one damage to the tooth and most of them are in the maxillary central incisors. The TDI increased with older age (10-12 years old) (16.5%) with odds ratio 4.8, (p<0.05). Regarding the site of trauma, most injuries happened in males on the street (44.9%) while in females happened at home (31.81%) and falls were the main cause of TDI. In both sexes, the most common type of injury was class I (enamel fracture) followed by class II (enamel and dentine without pulp involvement). Conclusion: In conclusion, the prevalence of TDI in permanent anterior teeth among mixed dentition of school children in Sana’a was high, higher in males than in females, with a peak age of 10 to 12 years, falls was the common cause, and occurred mostly on the street for boys and home for females. Accordingly, educational programs should be developed that focus on ways to prevent dental trauma and the benefits of seeking urgent treatment to maintain avulsed and fractured teeth. Peer Review History: Received 13 May 2020; Revised 15 June; Accepted 1 July, Available online 15 July 2020 UJPR follows the most transparent and toughest ‘Advanced OPEN peer review’ system. The identity of the authors and, reviewers will be known to each other. This transparent process will help to eradicate any possible malicious/purposeful interference by any person (publishing staff, reviewer, editor, author, etc) during peer review. As a result of this unique system, all reviewers will get their due recognition and respect, once their names are published in the papers. We expect that, by publishing peer review reports with published papers, will be helpful to many authors for drafting their article according to the specifications. Auhors will remove any error of their article and they will improve their article(s) according to the previous reports displayed with published article(s). The main purpose of it is ‘to improve the quality of a candidate manuscript’. Our reviewers check the ‘strength and weakness of a manuscript honestly’. There will increase in the perfection, and transparency. Received file Average Peer review marks at initial stage: 6.0/10 Average Peer review marks at publication stage: 8.0/10 Reviewer(s) detail: Name: Dr. Alfonso Alexander Aguileral  Affiliation: University of Veracruz,  Mexico E-mail: aalexander_2000@yahoo.com   Name: Dr. Mohamed Awad Mousnad Affiliation: Faculty of Pharmacy, International University of Africa (IUA), Khartoum, Sudan E-mail: m_abdalaziz@yahoo.com   Name: Dr. Asia Selman Abdullah Affiliation: Al-Razi university, Department of Pharmacy, Yemen E-mail: asia_abdullah65@yahoo.com   Comments of reviewer(s): Similar Articles: SERO-PREVALENCE OF HEPATITIS C VIRUS AMONG DENTAL CLINIC WORKERS IN SANA’A CITY- YEMEN AND THE RISK FACTORS CONTRIBUTING FOR ITS INFECTION 07 15 2020 10.22270/ujpr.v5i3.414 https://www.ujpr.org/index.php/journal/article/view/414 https://www.ujpr.org/index.php/journal/article/download/414/721 https://www.ujpr.org/index.php/journal/article/download/414/735 https://www.ujpr.org/index.php/journal/article/download/414/749 https://www.ujpr.org/index.php/journal/article/download/414/721 https://www.ujpr.org/index.php/journal/article/download/414/735 https://www.ujpr.org/index.php/journal/article/download/414/749