What is an overbite?
The overbite is the verticle overlap between upper front teeth and the exact same corresponding lower tooth. The ovejet is the horizontal distance between an upper front teeth and the exact same corresponding lower tooth.The measurements for the overbite and overjet can vary from person to person. The average overate : overbite ratio is 2:1.
It is often a unique situation that has been created in any individual. They can vary according to other aspects of your face like the size of your jawbones and teeth size, number and position. They can also vary due to certain long term and childhood habits that affect how your teeth erupt (grow into) in your mouth like thumb sucking or playing with the end of a pencil between your teeth.
Also, the “ideal” measurement range has been set as an average guiding parameter for dentists and is not definitive of any one case.
The most important thing is for your dentist to understand what anterior relationship you currently have and so better decisions can be made on how your teeth can be protected in the future. An increase in overbite will often steepen the guidance of the lower teeth against the upper teeth. A steepened bite can have the effect of casing wear on front of lower teeth and back of upper teeth.
The overbite has an effect of the lower face height. The lower face is defined as the distance between the chin and base of nose. The mid face is defined as the distance between the base of nose to the glabellae. The lower face height and the mid face height should be equal. An increase in overbite has an effect of reducing the lower face height, conversely the effect of a decrease in overbite has the effect of increasing the lower face height. Thus the appearance of the face can be affected by overbite.
An assessment of the overbite should be part of a full examination that assesses the patient's occlusion and aesthetics. The extended diagnostics should include taking study models and a facebow to articulate the casts on an articulator to observe the guidance. The other record recommended includes the use of the Kois Facial Analyser, and taking digital photographs to give an indication of the various facial heights.
Book a comprehensive examination and assessment with our leading dentists to discuss how to correct your overbite.
Next: Overbite Treatment Types.
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