Statement of the problem: Cementing the veneers on the teeth surfaces is considered challenging due to time consumption of the procedure, less convenience and technique sensitivity. A new technique was recently proposed that involves the cementation of multiple veneers at the same time. It was claimed by the manufacturer that it is more accurate than the individual cementation technique. As the fit increases, this will decrease the susceptibility for patient complains. Purpose: The aim of this study was to evaluate the internal fit of thin ceramic veneers using group (Glamsmile) and individual cementing application protocols. Materials and Methods: Two sets of mounted acrylic resin teeth were used for the construction of the ceramic veneers. The first group (n=10) was subdivided into two sub-groups; the first sub-group: the teeth received laminate veneer preparation on one side (n=5). The second sub-group; the teeth did not receive laminate veneer preparation (n=5). For the first group, the CAD/CAM constructed veneers as received from the lab were cemented with the conventional individual cementation technique. The second group (n=10) was subdivided into two sub-groups; the first sub-group; the teeth received laminate veneer preparation on one side (n=5). The second sub-group; the teeth did not receive laminate veneer preparation (n=5). For the second group, the ceramic veneers were received from the Glamsmile lab and were cemented using the Glamsmile technique in which a transparent tray was provided by the manufacturer containing the ceramic veneers in place ready for group cementation. Results: It was found that the group cementation protocol recorded mean internal fit value (279.93μ?) higher than that of the individual cementation protocol (187.08μ?) and the difference was statistically significant (P value <0.05). Results also showed that the group cementation protocol recorded mean vertical marginal gap value (60.37μ?) lower than that of the individual cementation protocol (110.19μ?) and the difference was statistically significant (P value <0.05). Conclusion: The internal fit values and the vertical marginal gap values for the prepared sub group of both groups for the individually cemented veneers and for the group cemented veneers (Glamsmile veneers) were within the clinically acceptable range.