Online ISSN: 2515-8260

Keywords : The difference in microleakage assessment between laser and the high-speed handpiece specimens was significant and could affect the longevity of the porcelain laminate veneers

Microleakage of porcelain laminate veneers to tooth surfaces prepared withEr: YAG laser

Mohamed Abd-Ellatif El-Patal, Mohamed I. Ebrahim,Barakat IF, Adel Fathi, 1AbdulazizSamran3,Yousef H. Abokhlifah4Salah A. Yousief, Abdullah Albarkheel, Mohammed A. Alodhaib, MohammedHashem

European Journal of Molecular & Clinical Medicine, 2021, Volume 8, Issue 3, Pages 3116-3128

The Er:YAG laser was proven to ablate enamel successfully. This study was aimed to
investigate the applicability of using this laser in preparing the enamel surface for
porcelain laminate veneering in comparison with the high-speed handpiece regarding
the fracture strength loading of the veneers. Twenty human maxillary central incisors
extracted were selected. They were divided into two equal groups [group I and group
II], group I: High-speed handpiece prepared specimens and group II: Er:YAG laser
prepared specimens for measuring microleakage by a binocular stereomicroscope.
The microleakage assessment results showed a significant difference in the
microleakage scores at the incisal margins of [Gr. I (group I)] the high-speed
handpiece compared to [Gr. II (group II)] the Er: YAG laser and significance
comparing the microleakage scores at the cervical margins of both groups (Gr. I) and
(Gr .II). Also, there were significant differences comparing incisal to those at the
cervical margins of (Gr.I) the high-speed handpiece and while in (Gr.II) the Er:YAG
laser group, a marked significant difference were present between the microleakage
scores at the incisal margins compared to the cervical margins.