Abstract:

Purpose: The purpose of the study is to compare the edge and interior surface compatibility of computer-supported design-computer-supported production and thermal-pressing methods produced porselain laminate venus.   Tools and methods: A total of 40 porselain laminate venus were evaluated in order to identify the manufacturing technique of the edge and interior surface conformities. Vens were manufactured by computer des- single design-computer-supported production and thermal pressing methods (n=20). The boundary and inner surface conformities were assessed using the replica technique. The replica of each venus was taken from the curve of the fluid elastomeric measurement material and the replicas were cut in the direction of mesio-distal and insizo-gingival. The internal surface and edge compatibility of each cut was measured using the x40 enlargement in the light microscope. 9 points for internal surface conformity, 3 points for boundary conformity were measured and the average was taken. Statistical analysis was carried out using Levene and independent samples t test (p<0,05).    Results: The marginal range values of the vents produced by heat and pressure system (269±136,92 μm) are higher than those produced by computer-supported design (192±61,02 μm) (p=0,028). When compared the internal surface range values of the two methods, the internal surface range values of the vents produced by heat and pressure system (190,43±63,33 μm) are higher than those produced by computer-supported design-computer-supported production (105,61±24,39 μm) (p=0,00). Result: Within the limits of this study, computer-supported design-computer-supported production method is better than those produced by the heating with the pressure system, the edge and interior surface of the porselen laminate venus.    Keywords: Laminate vener, Computer-supported design-Computer-supported production, Heat with Pressure, Count Compatibility, Internal Surface Compatibility, Replika method COMPARISON OF MARGINAL AND INTERNAL ADAPTATION OF COMPUTER AIDED DESIGN-COMPUTER AIDED MANUFACTURING AND HEAT-PRESSED CERAMIC LAMINATE VENEERS: AN IN-VITRO STUDY ABSTRACT Aim: The aim of this study was to evaluate the marginal and internal adaptations of porcelain laminate veneers produced with Computer aided design-Computer aided manufacturing and Heat-pressed techniques. Material and Methods: A total of 40 porcelain laminate veneers were evaluated whether the marginal and internal adaptations are changed due to manufacturing technique. The veneers were manufactured with Computer aided design-Computer aided manufacturing and Heat-pressed techniques (n=20). The marginal and internal adaptations of veneers were measured by using a replica technique. Replicas of each veneer were obtained by using a light-body silicone impression material. The replicas were sectioned mesio-distally and gingivo-incisally. Then the marginal and internal gap adaptation of each cross section were measured by a stereomicros- cope at x40 magnification. Nine measurement locations for internal, 3 measurement locations for marginal adaptation were used to obtain the average values. Levene and independent samples were used to identify the statistical difference between the groups (p<0.05). Results: The average marginal adaptation values of Heat-pressed and Computer aided design-Computer aided manufacturing veneers were 269±136.92 μm and 192±61.02 μm respectively. There was a significant difference between the values (p=0.028). A significant difference was found between the internal adaptation values of Heat-pressed (190.43±63.33 μm) and Computer aided design-Computer aided manufacturing veneers (105.61±24.39 μm) (p=0.00). Conclusion: Within the limitations of this in-vitro study, the Computer aided design-Computer aided manufac-turing veneers showed statistically better marginal and internal adaptation values than the Heat-pressed veneers. Keywords: Laminate veneer, Computer aided design-Computer aided manufacturing, Heat-pressed, Marginal adaptation, Internal adaptation, Replica technique

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