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Intra-maxillary elastics are elastics used in one arch only, either mandibular or maxillary. People using elastics for orthodontic correction change their elastics three to four times during the day. Elastic wear is recommend to be used in a rectangular wire to minimize side effects. Elastic wear depends on the compliance of the patient. A non ...
As the elastics are flexible, up to six elastics may be used to provide various forward and sideways forces on the patient's teeth and arch, while still allowing the patient to open and close his or her jaw. Facemask or reverse-pull headgear shows preparation for fitting to a patient with a number of elastic bands into the patients mouth.
Anterior open bite resulted from tongue thrusting in a 24 y.o. patient. Anterior upper teeth are not touching their counterpart. Anterior open bite (AOB) is defined as a condition in which there is no contact and no vertical overlap of the lower incisor crown with the upper incisor crown when the mandible is in full occlusion. [19]
One of the earliest uses of anchorage came from Henry Albert Baker for his use of the intermaxillary anchorage or Baker's Anchorage. This type of anchorage involves using elastics from one jaw to the other, in the form of either Class 2 elastics (moving upper teeth back) where lower molar teeth serve as anchors, or Class 3 elastics (moving lower teeth back) where upper molars serve as anchors.
The thickness increases to 0.6 or 0.7mm wire if it is to move more teeth or a larger/multi rooted tooth. [8] Palatal Finger Spring - These springs are used to move teeth buccally or lingually. Buccal Canine Retractor - These springs are used to bring a buccally placed canine more lingual. Z-Spring - This spring is used to move one or two teeth ...
An open bite malocclusion is when the upper teeth don't overlap the lower teeth. When this malocclusion occurs at the front teeth it is known as anterior open bite. An open bite is difficult to treat due to multifactorial causes, with relapse being a major concern. This is particularly so for an anterior open bite. [58]
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Attachment: typically consisting of rubber bands, elastics, or springs—joins the facebow or J-Hooks and the head cap together, providing the force to move the upper teeth, jaw backwards. The headgear application is one of the most useful appliances available to the orthodontist when looking to correct a Class II malocclusion.
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