During a full-mouth reconstruction, the entire dentition is rehabilitated.  A full-mouth reconstruction leads to a full rehabilitation of the mouth.  Significant loss of tooth structure can require extensive restorative care.  Common causes of sever wear can be from chemical cause, mechanical cause or a combination.  

Excessive wear can often be caused by hyperactive masticatory muscels and results in unacceptable damage of the occluding surfaces of the teeth. This in turn may cause a deterioration of structure of the front teeth, which are necessary for specific protective guidance functions, phonetics, and aesthetics.

Patients most at risk of dental erosion have work and sports dehydration, caffeine addiction, gastro-oesophageal reflux, asthma, diabetes mellitus, hypertension or other systemic diseases or syndromes that predispose to xerostomia (dry mouth). Saliva protects the teeth from the extrinsic and intrinsic acids which cause dental erosion. Erosion, exacerbated by attrition and abrasion, is the main cause of tooth wear.

Anorexia and Bulemia can also cause wear.  Intrinsic and extrinsic acids are the main etiologic reason for dental erosion. In combination of mechanical abrasion and tooth wear, the processes of erosion lead to substantial loss of tooth structure. In cases of severe eating disorders, like anorexia and bulimia, the whole supragingival tooth structure may be worn off over the years. These patients will need extensive reconstructive dental therapy to regain function and esthetics of their dentition.