The Open Public Health Journal

ISSN: 1874-9445 ― Volume 13, 2020

The Occurrence and Contributing Factors of Needle Stick and Sharp Injuries Among Dental Students in a South African University

Emma Musekene1, Perpetua Modjadji1, *, Sphiwe Madiba1
1 Department of Public Health, Sefako Makgatho Health Sciences University, School of Health Care Sciences, PO Box 215, Ga-Rankuwa MEDUNSA, 0204, South Africa



Needle stick and sharp injuries are a global public health issue, mainly due to exposure to infectious diseases. Dental students, in particular, are at a high risk of needle stick and sharp injuries attributed to the restricted working space of the oral cavity and the routine use of sharp instruments, among other risks. Despite this growing body of knowledge on needle stick and sharp injuries in the dental setting, data is limited among dental students in South Africa.


The study aimed to determine the occurrence and contributing factors of needle stick and sharp injuries among dental undergraduate students in a university in South Africa.


A university based cross-sectional study was conducted among 248 dental students in the School of Oral Health Sciences using a census sampling. An anonymous self-administered questionnaire was used to collect data on prevalence, procedures, instruments, reporting, contributing factors, training, protective strategies, and hepatitis B immunization. Data was analysed using STATA 14.


The response rate was 99% and the mean age of students was 24 years (SD=±4). Male students were 43% (107), while females constituted 57% (141) of the sample. One-hundred and one (41%) students reported being exposed to needle stick and sharps injuries. Most injuries (45%) occurred among students studying Bachelor of Dental and Surgery and among students in the 4th year (57%). The people at the departments of periodontology (39%), and maxillofacial and oral Surgery (25%) experienced most injuries. The main tools causing injuries were the syringe needle (52%) and the scaler (31%) while injecting a patient (34%), and scaling and polishing (26%) were common procedures. Eight (8%) students did not report their injury, even though the use of prophylaxis exposure was minimal (8%). Very few students (5%) were tested for a blood-borne virus after injury, while 23% did nothing with their injury and 43% opted to wash the injury under tap water. Lack of concentration (36%) and anxiety (19%) were reported as major contributing factors to injuries. Two hundred and forty six (99%) students were fully vaccinated against hepatitis B. Two hundred and nineteen (86%) students were aware of full details on the use of universal precautions. One hundred and eighty six (75%) students practiced needle recapping. Being in the 3rd year (AOR = 3.0, 95%CI: 1.4 - 6.3), 4th year (AOR = 5.0, 95%CI: 1.9 – 11) and 5th year (AOR=4.6, 95%CI: 2 -12.5) was significantly associated to injuries compared to students in the 2nd year of the study.


The needle stick and sharp injuries were prevalent in this study, and factors implicated were lack of concentration and anxiety, as well as, age, academic year of study and training on handling of instruments. The burden of needle stick and sharps injuries among the dental professionals can be reduced by adhering to the current and universally accepted standard precautionary measures against needle stick and sharp injuries.

Keywords: Clinical training, Contributing factors, Needle stick, South African university, Undergraduate dental students, Injuries.

Article Information

Identifiers and Pagination:

Year: 2020
Volume: 13
First Page: 126
Last Page: 133
Publisher Id: TOPHJ-13-126
DOI: 10.2174/1874944502013010126

Article History:

Received Date: 09/12/2019
Revision Received Date: 02/03/2020
Acceptance Date: 08/03/2020
Electronic publication date: 24/04/2020
Collection year: 2020

© 2020 Musekene et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Public Health, Sefako Makgatho Health Sciences University, School of Health Care Sciences, PO Box 215, Ga-Rankuwa MEDUNSA, 0204, South Africa E-mail:

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