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In dentistry, the configuration factor (or c-factor) refers to the number of bonded surfaces in an adhesive dental restoration.Because adhesive dental restorative material will adhere to the walls of a cavity preparation made available to it during polymerization, competing forces can arise during restoration of the tooth that can have both short and long term effects that correlate to the ...
Adhesive dentistry is a branch of dentistry which deals with adhesion or bonding to the natural substance of teeth, enamel and dentin.It studies the nature and strength of adhesion to dental hard tissues, properties of adhesive materials, causes and mechanisms of failure of the bonds, clinical techniques for bonding and newer applications for bonding such as bonding to the soft tissue. [1]
In the late 1970s, tooth adhesion phosphate monomer 2-methacryloyloxethyl phenyl hydrogen phosphate (Phenyl-P) was developed for tooth-saving restoration techniques. [ 3 ] 4-Methacryloyloxyethyl trimellitic acid anhydride (4-META) that adheres to not only tooth structures but also dental alloys, was developed almost at the same time. [ 4 ]
Bonding agents can be applied to dentine before cementation of inlays and onlays. [44] This is something that is very useful as dentine contains a lot of mineral, which makes binding more problematic. [44] A bonding agent that is applied straight after the preparation has been finished will give rise to greater dentine bond strengths. [44]
When the root is incompletely formed in adolescents and an infection occurs, apexification can be performed to maintain the tooth in position as the roots develop. In case of non-vital pulp: 1. Isolate the tooth with a rubber dam 2. perform root canal treatment. 3. Mix MTA and insert it to the apex of the tooth, creating a 3 mm thickness of ...
The thickness of smear layer can range from 0.5-2 μmeter and for the smear plug, 1 to 10 μmeter. [3] Smear layer poses some threat for optimal bonding to occur. That is why it needs to be removed. For example, smear layer needs to be removed prior to bonding by etch-and-rinse (total etch) adhesives.
Elephant's toothpaste is a foamy substance caused by the quick decomposition of hydrogen peroxide (H 2 O 2) using potassium iodide (KI) or yeast and warm water as a catalyst. [1] How rapidly the reaction proceeds will depend on the concentration of hydrogen peroxide. [2] [3] [4]
The teeth move when the arch wire puts pressure on the brackets and teeth. Sometimes springs or rubber bands are used to put more force in a specific direction. [1] Braces apply constant pressure which, over time, moves teeth into the desired positions. The process loosens the tooth after which new bone grows to support the tooth in its new ...