Kois Facial Reference Glasses
Collecting Data with the Facial Reference Glasses
Collecting patients’ dentofacial esthetic data by hand is not difficult, but can be very time consuming. By taking just
three photos while the patient is wearing the Facial Reference Glasses in your office, once the patient leaves, you will
be able to digitally measure many critical aspects of their dentofacial esthetics. For example, you can calculate
their upper lip movement, measure their maxillary cuspid display in repose—even if it is not visible—measure the
patient’s tooth dimensions and more. This protocol will give you the ability to obtain these data without the patient
present, saving you valuable chair time.
Setting up the Facial Reference Glasses
1. While the patient is standing and facing you, have them put on the Facial Reference Glasses. Adjust the glasses so they
are level on their face from left to right.
2. Have the patient turn to the side and hold up a mirror for them to look at so you can check their head posture while
they are looking straight ahead and ensure the glasses are level with the horizon of their face. If the glasses do not stay
level, use gauze placed on the bridge of the patient’s nose, under the glasses, to help stabilize them.
3. Have the patient sit in a chair and have them sit up straight.
4. Place the poster board behind them, and have them sit back on it. It may be at an angle depending on its size.
5. Next, put a 3 inch disk of 6 inch diameter foam behind their neck to help them maintain a straight posture and stabilize
6. Ask the patient to adjust their head position until the glasses align with the grid on the iPad’s camera.
7. Inform the patient about the type of photos you will be taking and ask them to practice saying “emma.”
Taking the Photos
1. Assist the patient with putting in the cheek retractors.
2. Using forceps, place 1/3 of a cotton roll between their upper and lower right second molars and have them close down
on it. The cotton roll is used to ensure there is a gap between the upper and lower teeth so we can later measure their tooth
3. Make any final adjustments to their head posture so the glasses remain level, aligning them with the grid on the iPad,
then take a photo of the retracted view. (Fig. 4)
4. Assist the patient in slowly removing the cheek retractors and cotton while keeping their head as stationary as possible,
continually using the grid on the iPad to maintain their alignment.
5. Instruct the patient to say “emma” and take a photo of their lips in repose. (Fig. 5)
6. Ask the patient to give their biggest (Duchenne) smile and take a photo of their Duchenne smile. (Fig. 6)