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Non-carious cervical lesions on an incisor belonging to Australopithecus africanus. Arrows show the location of the lesions. Non-carious cervical lesions (NCCLs) are a group of lesions that are characterised by a loss of hard dental tissue at the cementoenamel junction (CEJ) region at the neck of the tooth, without the action of microorganisms or inflammatory processes. [1]
Abfraction is a theoretical concept explaining a loss of tooth structure not caused by tooth decay (non-carious cervical lesions). It is suggested that these lesions are caused by forces placed on the teeth during biting, eating, chewing and grinding; the enamel , especially at the cementoenamel junction (CEJ), undergoes large amounts of stress ...
The aetiology of dental abrasion can be due to a single stimulus or, as in most cases, multi-factorial. [6] The most common cause of dental abrasion is the combination of mechanical and chemical wear. Tooth brushing is the most common cause of dental abrasion, which is found to develop along the gingival margin, due to vigorous brushing in this ...
Abfraction is a form of noncerious cervical lesion, where there is a loss of tooth substance at the cervical margins, purportedly caused by minute flexure of teeth under occlusal loading. This occlusal loading is one factor that interacts with chemical, biological,and behavioral factors in which result in this abfraction.
Dental crowns, tooth extraction, gum surgery Resorption of the root of the tooth , or root resorption , is the progressive loss of dentin and cementum by the action of odontoclasts . [ 4 ] Root resorption is a normal physiological process that occurs in the exfoliation of the primary dentition .
Abfraction, faceting and possible vertical enamel fracture lesions should also be noted if present. [30] 5) Contacts in ICP. Begin by assessing the incisor and molar relationship as described above. Similarly examine the overbite and overjet. An overbite of 3-5mm [2] and an overjet of 2-3mms are considered to be within the range of normal. [13]
Removable dental prostheses (mainly dentures) are sometimes considered a form of indirect dental restoration, as they are made to replace missing teeth. There are numerous types of precision attachments (also known as combined restorations) to aid removable prosthetic attachment to teeth, including magnets, clips, hooks, and implants which may ...
Other causes include dental bleaching, smoking tobacco (which can lead to recession and therefore sensitivity) cracked teeth and abfraction or grinding of teeth. Evidence of abfraction may be shown by wedge shaped defects that are developed at the cervical region of the teeth known as abfraction lesions.