Preselecting an array of checkboxes from mysql table

I have a form which puts together an estimate based on the inputs you fill in and select. One of these inputs is a group of checkboxes that determines what finishes the project receives. They go into the database as an array (name="finishes_id[]"). They are put into a table called finishes_used which looks like the following:

used_id   |   estimate_id   |   finish_id 

This table links together the finishes table with the estimates table. So for example, if 3 different finishes were chosen for one estimate, it would look like this:

used_id   |   line_id   |   estimate_id   |   finish_id 
1             1             1000              2                 
2             1             1000              6                 
3             1             1000              7                 

I am now making an edit page for the estimate and I am having trouble figuring out how to pre-select the finishes checkboxes that were used. It is showing ONLY the checkboxes that were selected. I need the option to check the others as well.

My code for the checkboxes part of my form looks like the following. How can I get the desired results above?

<?php
    $getid     = $_GET['estimate_id'];  // The current estimate number
    $getLineid = $_GET['line_id'];      // The current line item on the estimate
?>

<label for="finish_id">Finishing</label>
<div class="checkbox_group" style="width: 64%; display: inline-block; overflow: hidden; padding-top: 10px;">
    <?php
        if ($select = $db -> prepare("SELECT f.finish_id, f.finish_name, u.estimate_id, u.line_id FROM finishes AS f INNER JOIN finishes_used AS u ON u.finish_id = f.finish_id WHERE u.line_id = ? ORDER BY f.finish_name ASC"))
        {
            $select -> bind_param('s', $getLineID);
            $select -> execute();
            $select -> bind_result($finish_id, $finish_name, $used_estimate_id, $used_line_id);
            while ($select -> fetch())
            {
                echo '<div class="checkbox" style="width: 50%; float: left;">';
                echo '<input type="checkbox" name="finish_id[]" id="edit_'.$finish_name.'" value="'.$finish_id.'" ';
                echo '/><label style="line-height: 1;" for="edit_'.$finish_name.'">'.$finish_name.'</label>';
                echo '</div>';  
            }
            $select -> close();
        }
    ?>
</div>