Introduction. Today, porcelain laminate veneers are mainly used to optimize tooth form and position, close diastema, replace discolored or unesthetic composite resin restorations, restore teeth with incisal abrasions or tooth erosion, and mask or reduce tooth discoloration. However, even such high-precision restorations have a failure rate and complications. Veneer removal is generally performed with a rotary instrument. Using this method the veneer removal is complete, but this technique is not ideal as veneers and the underlying tooth structure may be damaged. With the recent introduction of lasers in dentistry, there may be beneficial application of lasers in removing veneers with lasers.
Purpose. The aim of our study was to analyze the efficacy of debonding for front indirect restorations.
Materials and methods. Experimental studies were conducted at Shupyk National Medical Academy of Postgraduate Education. According to our study following groups were created: group 1 (control) — veneer removal using rotary instruments (24 veneers): IА — ceramic veneers, from VITABLOCS MarkII, IB — ceramic veneers, from IPS e. max CAD; group II — veneer removal using a solid-state laser (Er: YAG) (32 veneers): IIА — ceramic veneers, fabricated from VITABLOCS MarkII, IIB — ceramic veneers, fabricated from IPS e. max CAD; group III — veneer removal using a solid-state laser (Er, Cr: YSGG) (34 veneers): IIIА — ceramic veneers, fabricated from VITABLOCS MarkII, IIIB — ceramic veneers, fabricated from IPS e. max CAD.
Results of the study. According to the results of our study using an Er:YAG and Er, Cr: YSGG laser allows debonding porcelain veneers from teeth in most cases without destroying the veneers which depends on the type of the ceramic material and technology of the fabricatin.