An onlay or inlay filling can be utilized on teeth with mild to average decay or damage. Teeth that have the requisite structure to support a restoration and doesn't need the extra support of a dental crown. Inlays and onlays are constructed out of porcelain materials and are built to fuse and blend into the existing tooth framework, making it look natural and organic.
The one noticeable difference among an inlay or onlay filling is the size of the restoration. The inlay has to be inserted in the middle of a tooth and merely extends from the back of the tooth to the front of it. The onlay on the other hand, does the same plus it can cover any of the broken segments; it is far more extensive and will envelop more surface area. The benefit to utilizing an indirect restoration is that during preparation, a lesser amount of natural tooth structure will need to be taken out and the fillings are built to fit securely within the current framework of the tooth.
The treatment for an inlay or onlay filling can be completed over three dental health visits.
Throughout the first visit, the affected tooth along with the area around the tooth will need to receive local freezing and in order to inhibit any materials from falling down the throat, a rubber dam needs to be placed. Then the tooth can be properly checked and the site can be prepped by eliminating any older fillings or any decay. Once cleaned and reshaped, an impression is made for the dental workshop specialist to manufacture the new onlay or inlay. Lastly, a temporary filling normally made of acrylic will be inserted to allow the patient to carry on routine activities.
After approximately a week, the new restoration will be completed and the fitting can occur. The affected tooth and surrounding area will have to be numbed once more and a rubber dam has to be inserted. When ready, the interim restoration can be pulled and the new restoration can be bonded to the tooth. The bite will be re-evaluated and the exteriors of the tooth will be polished.
The last appointment should take minimal time and only consists of checking the bite, the movement and ability to floss around the new restoration, and to make sure all the surfaces are smooth.
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