Why are the Primary Teeth So Important ? This question might come to your mind when your child is recommended with crown. It is very important to maintain the health of the primary teeth. Neglected cavities can and frequently lead to problems which affect developing permanent teeth. Primary teeth are important for proper chewing and eating, providing space for the permanent teeth and guiding them into the correct position, permitting normal development of the jaw bones and muscles. Primary teeth also affect the development of speech and add to an attractive appearance. While the front 4 teeth last until 6-7 years of age, the back teeth (cuspids and molars) aren’t replaced until age 10-13 years.
Crowns are the best available option to restore deciduous molars with extensive decay involving at least one proximal surface. Composites restorations are only an alternative to crowns in those cases with waste occlusal decay with no proximal involvements, even when a pulpal therapy has to be performed. The gingival tissues response to crowns and its long term clinical results are excellent.
Stainless Steel Crowns are designed to provide long-term coverage of primary molar teeth.
PMC’s for primary molar teeth were first described in 1950 by Engel. The morphology of primary molar tooth differs significantly from its permanent successor: Greatest convexity at the cervical third of crown.The enamel in dentin is much thinner than the permanent tooth. Pulp is large with prominent pulp horns.
For the placement of crown the tooth is prepared after giving the local anesthesia. For preparing the tooth reduction is done from the occlusal as well as the proximal sides the crown is selected according to the mesiodistal width of the crown. When the crown is placed there should not be any gingival blanching and the crown should snap or click in to the place.
The crowns are made of a polycarbonate resin incorporating microglass fibers which not only permit crown adjustment with pliers but also give these crowns good durability and strength. Polycarbonate crowns offer good protection to the prepared crown margins as well as maintaining tooth function.
Gold Anodized crowns are made from a medium-hard aluminum for durability and function. Gold anodization eliminates metallic taste and galvanic shock for greater patient comfort. The features of gold anodized crowns are:
These crowns are made from a high purity tin-silver alloy that is soft and ductile. They provide a positive contact point with either natural or artificial neighboring teeth. The smooth, burnished surface of the crown gives good compatibility with gingival tissue.
Strip crown forms simplify composite work for pediatric anterior restorations. Trimmed and filled with restorative materials, they automatically contour the restorative material to match natural dentition. They strip off easily, leaving a smooth surface. They are ideal for both chemical and photo curing composites. The features of strip crowns are:
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