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Dental Erosion Requires Attention

Hossam Hamza Mar 04, 2018 Dental Education

Erosion is one of non-carious lesions that can be overlooked in clinical practice; however, early detection of erosion can improve the outcome of treating dental erosion and avoid future complex procedures. The most characteristic feature of dental erosion is the glazed enamel surfaces where the underlying yellowish dentin can be visible. The loss of tooth structure leads to loss of crown heights, and, in turn, heterogeneous over-eruption of teeth which results in unstable occlusion. Dental erosion is more seen on the palatal surface of teeth; it results from too much and uncontrolled consumption of acidic food/drinks or from increased acidity in the oral cavity from medication or GIT regurgitation.

The ACE classification of erosion determines which treatment is needful for each case. The classification considers a number of factors such as dentin exposure on the palatal aspect, damage of contact areas and damage of the incisal edges. The treatment protocol includes stabilizing the case followed by preservation of the remaining structures. Restorative treatment can be of direct or indirect composite veneers as well as porcelain veneers or full-coverage crowns. Direct composite has the advantages of being a cost-effective and reversible restorative option that allows for following up the inspecting any new or worsened erosion lesions.

Adhesive materials need to be adapted on teeth surfaces when and minor sclerotic lesions in dentin should be inspected and minimally excavated or roughened if possible. This is because resin bond strength to sclerotic dentin is not powerful enough to develop resin tags which are responsible for durable restoration. Dental manufacturers nowadays develop new etching and bonding systems that can be applied on erosive lesions despite exposure of dentin.

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Enamel bonding agents are frequently used by clinicians to restore erosive teeth. The bond here glues the remaining hard enamel tissues at the gingival margin to nanohybrid, flowable direct composite restorations. Few limitations exist about this technique, as marginal discoloration may occur and the presence of tissue fluids at the gingival margin may lead to more bacterial invasion at the interface between the gum and restoration.

Managing these 2 limitations requires initial technique-sensitive procedures: preventing discoloration can be achieved by adequate polishing of the restorations after carving and shaping; placing retraction cords and rubber dam isolation can improve the polishing procedure at the gum margin of the restorations and thus decrease saliva contamination at the gum margins as possible.

Ceramic veneers and crowns are getting more popularity nowadays in restoring erosive dental lesions. They have the drawback of the high laboratory cost and more the more invasive treatment; however, they are more indicated when dental erosion involves many teeth or an entire dental arch.

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