Restauração classe IV guiada pela forma preliminar da coroa dentária: técnica restauradora

Abstract

The present work intends to present the operative sequence involved in the class IV restorative technique with photopolymerizable composite resin from the reproduction of the previous coronary shape, obtained in a study model, through the use of a silicone guide. A review of the literature on the subject was carried out using the Medline-PubMed and Google Scholar databases, from which twenty-one articles were obtained between 1989 and 2021. A book published in 2010 was also reviewed. literature, a simulation of the restorative procedure for class IV lesions with light-curing composite resin was also carried out in the laboratory, using the silicone guide technique on a prefabricated teeth dummy, in order to present the clinical sequence through illustrative images. This restorative technique optimizes the restorative procedure, facilitating the stratification technique with resins from the initial reference of length and width of dental crowns and harmony in relation to adjacent teeth, making the final result more predictable. However, this technique offers additional costs because it requires more clinical time, a greater amount of materials and a laboratory step for the diagnostic wax-up. It was found that, when performed correctly, the guide facilitates obtaining an ideal shape of the palatal and incisal surface, in addition to allowing a more precise stratification of the increments related to dentin and enamel. The restorative technique of anterior teeth with composite resin guided by the preliminary shape of the dental crown is a safe and effective alternative to class IV restorations. Although it can be a more laborious procedure and involve additional costs, the predictable and satisfactory results obtained justify the investment of time and resources. The use of silicone guides can provide a more accurate layering of materials and a more aesthetic and natural restoration. In addition, this technique allows the dentist greater confidence in obtaining a predictable and functional result, contributing to the improvement of the patient's quality of life.