Introduction

Pulpectomy is an essential procedure, extending the life duration of pulpally involved primary teeth. Traditionally, only hand instruments were used for endodontic treatment, whereas nowadays, various automated systems are introduced to reduce procedure time and efforts. The study aimed to compare and evaluate the biomechanical preparation of two automated systems, micromotor and endomotor, in deciduous and permanent molars.

Material and methods

Thirty extracted teeth samples were selected for biomechanical preparation in primary and permanent teeth after fulfilling inclusion and exclusion criteria, and were equally divided into three groups. Access opening, followed by biomechanical preparation was carried out in both study groups using automated systems. In control group, manual filing was done in group A, micromotor handpiece with K-file was used in experimental group B, and endomotor with rotary files was used in group C. Biomechanical preparation using automated system was assessed after taking intra-canal impression. Impressions were evaluated using digital camera by assessing taper and flow in the canal.

Results

The micromotor and endomotor systems resulted in a generally higher percentage of impressions achieved with good flow and taper, compared with manual hand preparation. However, a statistically significant difference was observed only for the flow in permanent teeth (p < 0.05).

Conclusions

Both the automated systems, micromotor and endomotor preparations, demonstrated similar results. Therefore, micromotor preparation can be considered an alternative and equally effective method of biomechanical preparation.