This study starting with collection of forty study casts of children aged 2-4 years old of both gender, with prematurely lost one of the maxillary central incisors and the adjacent lateral incisor was carious and considered to be abutment tooth were involved in this study for construction of cantilever bridges (Figure 1). For each cast, two bridges were constructed; 1st one is CAD/CAM acrylic bridge and the other one is manually performed acrylic bridge (Figure 2). Construction CAD/CAM bridge: The cast was 3D scanned by special scanner (710 3D) (smart optics Sensortechnik GmbH, Germany). The design of the bridge was carried out using Exocad Program (smart optics Sensortechnik GmbH, Germany). Acrylic block (Poly-methyl methacrylate) of classic shade A1 (Ivoclar vivadent, Switzerland) was used for fabrication of the bridge using CAD/ CAM machine (Charly dental, ZI Fonlabour, France). The bridge was finished and polished very well [4]. Construction of manually acrylic bridge: Wax pattern was fabricated on cast then followed the technique of typical wax loss; the heat-cure acrylic (Ivoclar vivadent, AG, FL-9494 Schaan/Liechtenstein) of classic shade