The impact of practical courses on Dental Practitioners Hand skills

2020 01 04

The impact of practical courses on Dental Practitioners Hand skills

Ali Nankali

Type of article: Audit

Author(s): Ali Nankali, Barts and the London Medical Institute, Quees Mary University, United Kingdom

Date of publication: 2020 01 04


Cavity preparation is one of a daily dental practitioners’ involvements, hence clinicians should be confident for their preparations and achieve an appropriate designed cavity for planed restorations. This research was done to assess the strength of cavity preparations and prevention of iatrogenic damages.


Methods: In 2015, six full-day “lectures – hands on” CPD courses delivered by eWisdom (London Deanery) at Barts and Dental Institute at Queen Mary University were dedicated for this study. 210 cavity preparations were observed and analysed to determine the most common existing issues within the study limitation and was tried to find out appropriate solutions. Each course was dedicated for 12 practitioners with a minimum three cavity preparations by each individual which were then analysed and discussed accordingly. One of the main problems was related to opening of the contact area on posterior teeth for both direct and indirect visions. The next noticed issue were the differences in preparation accuracy between buccal and lingual/palatal sides related to the sizes and axial wall angles. Postures, visions and burs were also determined as factors that impact outcomes dramatically.


Results: The study demonstrated the impact of the lectures – Hands on CPD courses outcomes. In addition it illustrated that practitioners, who have difficulties in cavity preparations, can be divided in three main groups: those who not aware about their weaknesses, those who know about their weaknesses yet they do not know the root cause, and those who are aware of their weaknesses and solutions however they require some practice on manikin heads preferably under supervision. It was also experimented that after finding the reason behind their mistakes, for those who did not know the reasons, they were able to adjust their work relatively quick which demonstrated the positive impact of this type of courses.


Conclusion: Hands on manikin courses are one of the suitable places to help practitioners understand their weakness and improvements, furthermore it may help educational systems to recognise clinicians needed.


Keywords: cavity preparation, opening contact point, direct vision, indirect vision, iatrogenic damages