Shape of the dentition
An imbalance between the mouth muscles (lips, chewing muscles, tongue and tongue muscles) also influences the shape of the jaws and the position of the teeth and molars. An overjet and an overbite are easy to measure with a ruler or a periodontal probe. For a overjet in combination with an open bite (nagative overjet), only the SOB meter can be used. To get an indication whether you are dealing with a skeletal or myogenic open bite, a measurer for angle of mandible can be used.
Measuring an open bite and the angle of mandible.