Simplified In-Office TAD Guide

Introduction

Placement of a temporary anchorage device (TAD) accurately at the desired interdental bone, without damaging the vital structures, is required. A modification in Daseri et al. ¹ method was developed, which is indigenous, customizable, and cost-effective.

Procedure

Step 1: Mini screw-guided grid was made by printing a graph on an OHP sheet using HP LaserJet 1018 printer. The graphed OHP sheet was then cut to the size of an IOPAR (Figure 1).

Figure 1.

Miniscrew Guiding Grid.

Step 2: The graphical OHP sheet is placed on the IOPAR, which was taken by the paralleling cone technique in order to minimize the magnification errors caused by bisecting angle technique, and the anatomical landmarks were traced on the graphical grid (Figures 2 and 3).

Figure 2.

IOPAR.

Figure 3.

Guiding Grid with Traced Anatomical Landmarks.

Step 3: The desired interdental area is marked on the graphical grid between the second premolar and first molar (Figure 4).

Figure 4.

Marked Interdental Area (Red Dot).

Step 4: The drawn area of the graphical grid is placed intraorally and matched exactly with the anatomical structures. After that, a punch is made on the marked implant site (Figure 5).

Figure 5.

Intraoral Punch.

Step 5: Figure 6 shows the placement of TAD, and Figure 7 shows the accuracy of the grid.

Figure 6.

Successful Placement of TAD.

Figure 7.

IOPAR Confirming Correct Position of TAD.

Advantages

Grid made with OHP is cost-effective and easy to use, as well as to construct.