What are the three main classes of occlusion?
In order to better understand types of occlusion, it’s been broken down into three categories: Class 1, Class 2 and Class 3. Teeth are aligned in Cusp Fossa relationship with their antagonist teeth. This is noted as “NORMAL” occlusion. This is also known as the “standard” of occlusion and what we try to achieve.
What’s the difference between malocclusion and occlusion?
Occlusion is determined by the shape of the head, jaw length and width and the position of the teeth. By definition, malocclusion is an abnormality in the position of the teeth.
What is the normal teeth occlusion?
Normal occlusion occurs when the mesiobuccal cusp of the upper first molar is received in the buccal groove of the lower first molar (Angle class I occlusion).
What is a normal occlusion?
How do you test for occlusion?
The occlusion is assessed by examining the marks on the teeth (Fig 10-1b) and by holding the tape to the light when small perforations in the marking ink will be seen which, with experience, can be located on the teeth.
How do you fix occlusion?
Traumatic occlusion is mostly treated by a procedure called occlusal equilibration in which the chewing and biting surfaces of teeth are grinded to achieve balance and proper alignment. By doing so the pressure on individual teeth is lessened, thereby making them less susceptible to becoming weak or contaminated.
What causes dental occlusion?
Enamel-to-enamel contact areas that occur over time can wear on both the mesial and distal surfaces as a result of the “anterior component of force,” a well-known subject in occlusion. However, abrasive or nonabrasive adjacent materials wear at different rates, allowing abnormal movement of teeth in a mesial direction.
Which is the most common class 1 occlusion?
What is a Class 1 occlusion? Class 1 malocclusion is the most common. The bite is normal, but the upper teeth slightly overlap the lower teeth. Class 2 malocclusion, called retrognathism or overbite, occurs when the upper jaw and teeth severely overlap the bottom jaw and teeth.
What is the difference between Class 2 malocclusion?
CLASS II MALOCCLUSION Mesiobuccal cusp of upper first permanent molar occludes mesial to the buccal develipmental groove of the lower first permanent molar. Line of occlusion not specified. There may be normal or abnormal line of occlusion. Class II malocclusion is subdivided into two types.
How is malocclusion different from normal occlusion of teeth?
It’s a deviation from the normal occlusion of teeth where all the upper teeth fit over the lower teeth. People with normal occlusion have a perfect bite and the points of the molars of each set of teeth fit the grooves of the molars of the other set.
How did Edward Angle classify malocclusion of teeth?
Classification of Malocclusion. Edward Angle first classified malocclusion on the relative position of the upper first molar. For a perfect occlusion, the cusp of the upper first molar should rest in the groove of the lower first molar. All the other teeth should also fall in the line of occlusion.