Background: The overall success of dental implants depends on the crestal bone support around the implants. During the initial years, the bone loss around the implants determines the success rate of treatment. Platform switching (PLS) preserves the crestal bone loss, and this approach must be applied clinically. Aim: The purpose of this study was to determine the changes in vertical and horizontal marginal bone levels in platform-switched and platform-matched dental implants. Materials and Methods: One fifty patients received one fifty dental implants in the present study over a 1-year period. Measurement was performed between the implant shoulder and the most apical and horizontal marginal defect by periapical radiographs to examine the changes of peri-implant alveolar bone before and 12 months after prosthodontic restoration delivery. Results: These marginal bone measurements showed a bone gain of 1.56 ± 2.4 mm in the vertical gap and 1.49 ± 2.24 mm in the horizontal gap of the platform matching, while in the PLS, a bone gain of 2.67 ± 2.0 mm in the vertical gap ( P < 0.05) and 2.89 ± 1.67 mm in the horizontal gap was found. Only a statistically significant difference was found comparing bone gains in the vertical gap between the two groups ( P < 0.05). Conclusion: PLS helps preserve crestal bone around the implants, and this concept should be followed when clinical situations in implant placement permit.

Maxillary denture in atrophic ridges should be as light weight as possible that will give the retention, stability & support to maxillary denture. Rehabilitation of such a condition is very difficult due to inadequate support from Hard and soft tissue .This technique describes a novel method for fabrication of a hollow maxillary complete denture. Usage Abgel it's a absorbable gelatin sponge & this is placed into cavity left by the silicone putty index (Zhermack Zetaplus C Silicone) which gives suitable dimensions between acrylic resin and the denture base resin. Abgel is weightless, sterile & readily available.

Aim:To assess the association of various clinical parameters and proinflammatory cytokines in the wound-healing process of dental implants with the presence or absence of antibiotic prophylaxis. Materials and methods:The present study included evaluation of early wound-healing process in patients undergoing dental implant placement procedures with and without antibiotic prophylaxis. A total of 50 patients with partial edentulous arch were included in the present study. All the subjects were broadly divided into two study groups depending upon the presence or absence of prophylactic antibiotic therapy, with 25 patients in each group. One group consisted of subjects who were given prophylactic amoxicillin (2 gm), 1 hour before the starting of the surgery, followed by 500 mg 3 times a day for 1 week. Detection of interleukin (IL)-1β and -8 cytokine levels in the gingival crevicular fluid (GCF)/peri-implant crevicular fluid (PICF) was done immediately after the dental surgery. All the results were compiled and analyzed by Statistical Package for the Social Sciences (SPSS) software version 17.0.Results: A significant increase in the PICF IL-1β concentration at postoperative follow-up time was observed in the antibiotic group in comparison with the baseline values. A significant increase in the IL-8 concentration postoperatively in comparison with the baseline values in the antibiotic group was also observed. At the time of surgery, the IL-8 concentrations were statistically lower in the antibiotic group in comparison with the other study group. Concentration of amoxicillin, as observed by high-performance liquid chromatography (HPLC), was lower than the minimum detection levels. Conclusion:Detection of amoxicillin is not feasible within the GCF samples immediately after dental surgery procedure.Clinical significance: Clinical usefulness of prophylactic use of amoxicillin is still doubtful.