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The components of a metal zipper include: Zipper teeth. Also known as the chain, it includes the two continuous rows of metal teeth protrusions that are meshed together to close the zipper or separate it. The zipper teeth or chain is measured in terms of chain width gauge size. The bigger the gauge number, the wider the chain width. Slider
Zipper slider brings together the two sides of teeth. The popular North American term zipper (UK zip, or occasionally zip-fastener) came from the B. F. Goodrich Company in 1923. The company used Gideon Sundbäck's fastener on a new type of rubber boots (or galoshes) and referred to it as the zipper, and the name stuck. The two chief uses of the ...
Ankylosis itself is not a reason to remove a permanent tooth, however teeth which must be removed for other reasons are made significantly more difficult to remove if they are ankylosed. [3] Ankylosis in growing patients can result in infra occlusion of teeth, this can lead to an aesthetic and functional deficit.
Cracked tooth syndrome could be considered a type of dental trauma and also one of the possible causes of dental pain.One definition of cracked tooth syndrome is "a fracture plane of unknown depth and direction passing through tooth structure that, if not already involving, may progress to communicate with the pulp and/or periodontal ligament."
Tooth fusion is difficult to distinguish from tooth gemination, thus, both conditions are often referred to together as “double teeth”. [ 1 ] Double teeth can cause other dental problems such as crowding , ectopic eruption of adjacent teeth, gum issues , cavities , malocclusion , poor esthetics, and more. [ 1 ]
Because impacted teeth do not erupt, they are retained throughout the individual's lifetime unless extracted or exposed surgically. Teeth may become impacted because of adjacent teeth, dense overlying bone, excessive soft tissue or a genetic abnormality. Most often, the cause of impaction is inadequate arch length and space in which to erupt.
Teeth displaying enamel hypoplasia lines, linear defects of enamel that form during crowns development as a result of periods of nutritional stress or disease during infancy and childhood Enamel hypoplasia is a risk factor for dental caries in children including early childhood caries (ECC), which continues to be a burden for many children.
A splint can be used to protect teeth from further damage as it creates a physical barrier between lower and upper teeth. In order to treat mobility, teeth can be joined or splinted together in order to distribute biting forces between several teeth rather than the individual mobile tooth.