When is Cuspal coverage required?
Moderately destructed teeth include VT and ETT teeth with a MO/DO cavity with thin axial walls (<2 mm) or a MOD cavity. In this category, cuspal coverage is needed for ETT, whereas it might be avoided for the VT. Severely destructed teeth include ETT and VT with structure loss beyond an MOD cavity.
Why is Cuspal covered?
Cuspal-coverage restorations are important to preserve the integrity of a weakened tooth against the forces of occlusion. This article discusses the clinical indications for both direct and indirect cuspal-coverage restorations and the evidence supporting their use.
What is the minimum thickness for amalgam restoration?
The minimum thickness for amalgam is 1.5mm, 1-2mm for cast metal and 2mm for porcelain.
Why are retention pins used in complex restoration?
Pin is made of titanium and used as retention for restoration with the aim to unite restorative material in tooth cavity by filling the hole that is prepared in the dentin. The number of pins that are needed is according to the width of the lost tooth tissue.
How do you restore an endo tooth?
Anterior teeth with minimal access cavity can be restored with a composite resin, and premolars and molars with minimal access cavities or other coronal tissue loss can be restored with amalgam or composite resin in combination with a resin bonding system.
What is a Class 5 filling?
Class V: Cavity on the cervical third of the facial or lingual surfaces of any tooth (Think of the neck of the tooth)
Where is it acceptable to leave unsupported enamel?
The facial enamel is conserved for enhanced esthetics. 2. Some unsupported, but not friable, enamel may be left on the facial wall of a Class III or Class IV preparation.
What are the different types of pins used for added retention?
Order of retention offered by different pin systems is threaded pins> friction locked pins > cemented pins. Within the cemented pin type, serrated pins are more retentive than smooth surface pins. Within limits, increasing the depth of pin in dentin increases the retention.
What are the consequences of placing retentive pins?
Developed by Dr. Goldstein in 1966.
Do all root canals need a post?
For that reason, this post and core is performed after a root canal. Roark only recommends a post and core procedure when more than 50 percent of your tooth’s original structure is removed. In these instances, the post helps mechanically retain the dental crown and core.
Do all anterior Endodontically treated teeth always needs a crown restoration?
The literature has a lot of contradictory reviews regarding this issue; while some clinicians maintain that endodontic treatment in posterior teeth should be considered complete only when the tooth is protected by full cast crown, others are convinced that all endodontically treated teeth do not require full cast crown …
What surfaces are a Class 5 filling?
Class V lesions occur on the cervical 1/3 of the labial surfaces of incisors and canines; and on the buccal and lingual surfaces of premolars and molars. They take place under two case scenarios; through the formation of caries or through the loss of tooth substance due to abrasion/erosion.