Retention of fixed partial dentures is mostly dependent upon the bond between metal and cement as well as cement and tooth structure. However, most of the time clinical failure of bond has been observed at metal and cement interface. The treatment of metal surface, prior to luting, plays a crucial role in bonding cement with the metal. This study is conducted to evaluate and compare the effect of different surface preparations on the bond strength of resin-modified glass ionomer cement with nickel-chromium metal ceramic alloy. Fifty caries-free extracted molar teeth were made flat until the dentin of the occlusal surface was exposed. After fabrication of the wax patterns and subsequent castings, the castings were subjected to porcelain firing cycles. The nickel-chromium metal ceramic alloy discs were also divided into five groups and subjected to various surface treatments: (1) Unsandblasted (U), (2) sandblasted (S), (3) sandblasted and treated with 10% aqueous solution of KMnO4 (SK), (4) unsandblasted and roughened with diamond abrasive points (UD) and (5) unsandblasted and roughened with diamond abrasive points and treated with 10% aqueous solution of KMnO(4) (UDK). After surface treatments, the castings were cemented using Fuji PLUS encapsulated resin-modified glass ionomer cement. The obtained values of all the groups were subjected to statistical analysis for Tensile and Shear bond strength. Different surface treatments of the metal affects the bond strength values of resin-modified glass ionomer cement when used as luting agent.

Tongue-palate contact is necessary for the production of normal speech, and the proper location of the tongue on the palate during certain sounds is important. Partial glossectomy leads to difficulty in tongue-palate articulation during speech, and it becomes difficult for a patient to reach the palate with the tongue to form certain sounds. In-depth knowledge of the production of different sounds can be used as a diagnostic aid in determining the thickness of the palatal augmentation prosthesis fabricated to rehabilitate such patients. A functional wax technique is used to make a functional impression of tongue-palate contact during the speech.

Aim: Aim of this study was to evaluate and compare stress transfer at bone implant interface in customized root form implant and conventional endosseous implant. Materials and methodology: A three-dimensional finite element model of Emulate implant and conventional endosseous implant (nobel active 4.2X11.5mm) was generated. The implants were restored with metal ceramic crown and subjected to 20 Mpa of axial applied stress. Resolved stresses were examined at four heights along the implant bone interface. Results: In conventional endosseous implant with 100 % osseointegration higher stresses (1.01-0.12 MPa) were concentrated on the facial surface of crest of implant. The stresses decreased from junction of cortical bone and trabecular bone to the apex of implant (0.36 – 0.12 MPa). The maximum stresses on emulate implant with 100 % osseointegration were at the facial surface of the crest of implant (0.05 MPa) which were comparatively lesser than conventional endosseous implant (1.01 MPa). Conclusion: The degree of osseointegration affected the stress levels or distributions around both implants. Crestal stresses were always higher than apical stress. When the implants were 100% osseointegrated, then stresses were higher on conventional endosseous implant while in case of 50% osseointegration, stresses were higher on emulate implant.