Introduction A simulation model improves the learning of dental anaesthesia in dental students. This study explored first, the making at home of a dental anaesthesia simulation model by dental students, and second, the impact of that simulation model on the learning of dental students following an online course. We compared the level of knowledge, the level of perception of confidence to perform the basic injection technique (BIT) of dental anaesthesia, and the level of attitude towards e‐learning of the BIT between a group of dental students who had an online course with a home‐made dental anaesthesia simulation model (HMDASM) and a group of dental students who did not use that model. Materials and methods A group of participants (n = 28) used the HMDASM to learn the BIT with an e‐learning course. Another group of participants (n = 28) followed the same e‐learning course, but that group used a lemon to practise the BIT. The two groups answered questionnaires that explored the level of theoretical knowledge on the BIT, the level of perception of confidence to perform the BIT, and the level of attitude towards e‐learning of the BIT. Questionnaire scores from each group were compared by a Student's t‐test (p ≤ .05). Results The group that used the HMDASM had a level of knowledge similar to that of the other group (p > .05). The group that used the HMDASM had a level of perception of confidence to perform the BIT and a level of attitude towards online learning of the BIT higher than those of the group that did not use the simulation model (p < .05). Conclusion The use of a HMDASM had a positive effect on dental students following an online course to learn the BIT.