Mathieu Forceps: A Learners Aid for Positioning the Weldable Molar Tube

Abstract

Lack of control while handling tiny objects like weldable molar tubes is the most common problem faced by the learners in orthodontics. They are prone to slippage and at times alter in position during spot welding. Here, we provide an easy-going clinical tip for accurate positioning and grasping of weldable molar tubes through spot welding using the Mathieu forceps.

Introduction

Holding the molar tube onto the molar band during the course of spot welding is a difficult task during the initial days of learning orthodontics. These tend to lose their balance, get contaminated, or even get spot welded in an altered position. One easy method to overcome this hitch is by placing beading or relief wax between weldable attachments for better control in position. ¹ However, during welding, the wax melts off and acts as an impurity and results in a weak weld. Another method is the usage of pre-fluxed silver solder paste as an adhesive in positioning the molar tube before welding. The heat produced in the course of welding melts and fuses the solder. ² However, an extra material is required as a gluing agent. The beginner's spot weld molar tube positioner and multipurpose jig were recommended as an aid for welding.^{3, 4} But these require fabrication of positioners, which are little weak in their framework. This article suggests a simple tip of using Mathieu forceps for grasping the molar tube onto the band during spot welding.

Procedure

Take a Mathieu forceps and clamp it on one side wing of the weldable molar tube against the molar band (Figure 1). Tack weld (low current) the contralateral wing in the assumed position (Figure 2). Release the Mathieu forceps and then make finer adjustments of the molar tube by rotating the molar tube and spot welding it.

Figure 1.

Source: Department of Orthodontics, GSL Dental College & Hospital.

Figure 2.

Source: Department of Orthodontics, GSL Dental College & Hospital.

Conclusion

This clinical tip minimizes the effort and time for accurate positioning of the molar tube without slippage during spot welding.