Objectives:The purpose of this review was to recognize the biological complication of implant superstructure materials in comparative to alveolar bone loss around superstructure. Methodology: A search on the electronic database and additional a manual searching was focused to detect randomized clinical trials and other studies that gives a sign about superstructure complication. alveolar bone loss was ascribed to the amount of rescission, crestal bone and loss Pocket depth. Results:The initial search gives a twenty-six from an initial search of 144 studies and the analyzing data were tabled rendering to output complication. Pocket probing depth were recognized in eighteen clinical studies, Pocket probing depth around all ceramic superstructure was 3.1 mm versus 3.5 mm for porcelain fused to metal superstructure. sixteen studies inspected the recession index for all ceramic and porcelain fused to metal superstructure. recession index ranged from 0.1 to 0.5 at porcelain fused to metal superstructure and 0 to 0.3 at all ceramic superstructure. alveolar bone loss around all ceramic superstructure was itemized to differ from 0.21 -1.5 and 0.4 -1.5 mm at porcelain fused to metal superstructure. Conclusion: The information described in this systematic review did not give an indication for the complication regarding all ceramic versus porcelain fused to metal superstructure. However, it can be settled that the assessment of the randomized clinical trials did not provide an absolute prime for the choice of ceramic or porcelain fused to metal as superstructure material relative to alveolar bone response.
Aim: This study compared a milled zirconia framework veneered with CAD-On lithium disilicate glass ceramic to a PEKK framework with CAD-On lithium disilicate glass ceramic milled using CAD-CAM milling in order to analyse the vertical marginal gap of the PEKK framework.Methodology: 14 natural teeth requiring full coverage crown were prepared. The crowns will be divided into two groups: I: Teeth receiving crowns fabricated from veneered CAD ON zirconia II: Teeth receiving crowns fabricated from veneered CAD ON pekk.A uniform 1.5 mm axial reduction (10 0 taper) and 1,5 mm occlusal reduction with a 360 0 deep chamfer finish line (1 mm thickness) was prepared on all teeth. Scanning and designing of the restorations were done and the final design was split in the software into core and veneer layers to be milled separately. Fusion of the veneer to the core was the only manual step done in crown construction; it was done using low fusing glass material (IPS e.max Crystall./ Connect) in the control zirconia group and using adhesive resin cement (multilink) in the PEKK group as recommended by the manufacturer. All the crowns were adhesively cemented on their corresponding preparations using Duo-link adhesive resin cement. All the specimens were subjected to thermo-mechanical fatigue loading for 150,000 cycle simulating one year' clinical service .Vertical marginal gap was assessed using stereomicroscope for the two groups before and after thermomechanical aging for all the specimens.
Objective:The purpose of this study was to to present maximum voluntary bite force as a reliable objective assessment tool for the analysis of the management of mandibular fracture. Materials and methods:The study is a prospective case series for evaluation of the postoperative bite force in patients suffering from mandibular fracture posterior to the mental foramen and managed with open reduction and internal fixation. Statistical significance was set at the 5% level. Results: Twelve patients were enrolled in this study. Nine of the involved patients suffered from a mandibular angle fracture, while three patients complained from mandibular body fracture. All patients across the follow-up sessions reported a statistically significant decrease in the level of the experienced pain intensity. All of the operated patients reported a statistically significant increase in the level of the measured inter-incisal mouth opening. Across the examination period, the mean reported maximum voluntary bite force showed a statistically significant increase. Conclusion:Postoperative maximum voluntary bite force analysis is a a reliable objective tool for the assessment of the quality of posterior mandibular fracture management, outlining the favourable outcome of open reduction and internal fixation.
Objective:The purpose of this study was to to outline the performance of low profile 2.4-mm reconstruction plate in bridging segmental mandibular defects. Materials and methods:The study is a randomized clinical trial with a one-year follow up period. Patients requiring segmental resection was divided into Group I, managed with a low-profile 2.4-mm reconstruction plate, and Group II, managed with a regular 2.7-mm reconstruction plate. A long-term follow-up session was performed to outline plate related complications. Results: Twelve patients were included in this study and divided into two groups, and at the end of the follow up period one patient failed to recall. None of the cases in the study group suffered from plate related complications, while two cases reported major and minor Plate related complications in the control group. Conclusion: a 2.4-mm reconstruction plate utilized in the fixation and reconstruction of a segmental mandibular defect offers a more convenient fixation device with a comparable favorable clinical and radiographic outcomes as the conventional reconstruction plate.
INTRODUCTION:Hydrodynamic piezoelectric surgery is a sophisticated approach to internal sinus elevation that uses a transcrestal technique to reduce postoperative complications such as sinus floor perforation, bleeding, and implant malfunction. AIM OF THE STUDY:The goal of this study stood to assess how the minimally invasive hydrodynamic piezoelectric internal sinus elevation procedure performed with or without bone grafting and simultaneous implant insertion and the affected clinical outcomes. MATERIALS AND METHODS:A sum of 30 maxillary sinuses were chosen to meet a set of inclusion and exclusion criteria (patients with missing molars or premolars). A computer mechanism randomly separated the participants into three groups. At all surgical sites, cone beam CT (CBCT) was used to assess the residual bone height present between the crest of the alveolar bone and the floor of the sinus, as well as the bone breadth needed for the proper implant size and placement. All groups had an elevated transcrestal mucoperiosteal flap. Both study groups A and B had sinus lifting surgeries with and without bone grafts, as well as simultaneous implant installation with a hydrodynamic piezoelectric lift. A sinus floor elevation surgery was performed on the control group C, and implant implantation at the same time. In each group, the bone height obtained following sinus augmentation was measured using (CBCT). RESULTS: Piezoelectric sinus lift revealed good significant difference p<0.05* in the bone height gained after the Schneiderian membrane elevation with minimal postoperative complications concerning pain, edema and membrane perforation compared to the conventional osteotomes. The conflicts between the two study groups and the other control group were confirmed to be statistically significant.
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