IADR Abstract Archives
Challenging Successfull Restoration Procedures of Abfraction Lesions: Case Reports and Review.
Objectives: In 1991 a 4th classification of non-carious cervical lesions has been termed Abfraction by Gippo. This loss of tooth substance is caused by flexure and fatigue of dental hard tissues due to pathological occlusal forces exerted on the teeth. The restorative treatment of this lesion with composite resin faces several challenges mainly sclerotic dental structure and moisture isolation.Therefore, defining a rigourous protocol to treat abfractions is required which will be represented through two clinical cases.
Methods: This illustration presents 2 clinical cases of middle aged women suffering from abfractions in multiple teeth consulted our department of COE due to previous direct adhesive restorations failure.
Results: It should be noted that failure of restorations placed to treat abfractions is commonly observed, mainly because the multifactorial etiology of these lesions may not be managed effectively. Thus the treatment of abfractions requires an adaptative strategy.
The first key is to start with the adequate isolation of the site to guarantee moisture control which is one of the causes of weakening of the bonds.
The second key is to manage the bonding of the sclerotic dentin and the removal of its surface layer with a stronger etching to guarantee the presence of the smear layer and also the resin interdiffusion network through the tubular lamina. Its also recommended to use a lightly stoned fine dimond bur to achieve the bonding.
The last key is the occlusal adjustment to minimize the failure of the cervical restoration. The adjustment may involve altering cuspal inclines, reducing heavy contacts, and removing premature contacts.
Conclusions: The success of the treatment of abfraction offers several qualities. In fact, restoring these lesions improves the maintenance of oral hygiene of the patient. It also helps in decreasing thermal sensitivity, improving aesthetics, and strengthening the teeth.
Methods: This illustration presents 2 clinical cases of middle aged women suffering from abfractions in multiple teeth consulted our department of COE due to previous direct adhesive restorations failure.
Results: It should be noted that failure of restorations placed to treat abfractions is commonly observed, mainly because the multifactorial etiology of these lesions may not be managed effectively. Thus the treatment of abfractions requires an adaptative strategy.
The first key is to start with the adequate isolation of the site to guarantee moisture control which is one of the causes of weakening of the bonds.
The second key is to manage the bonding of the sclerotic dentin and the removal of its surface layer with a stronger etching to guarantee the presence of the smear layer and also the resin interdiffusion network through the tubular lamina. Its also recommended to use a lightly stoned fine dimond bur to achieve the bonding.
The last key is the occlusal adjustment to minimize the failure of the cervical restoration. The adjustment may involve altering cuspal inclines, reducing heavy contacts, and removing premature contacts.
Conclusions: The success of the treatment of abfraction offers several qualities. In fact, restoring these lesions improves the maintenance of oral hygiene of the patient. It also helps in decreasing thermal sensitivity, improving aesthetics, and strengthening the teeth.