Aim: The aim of the study was to develop a model that represents a basal implant with stress distribution in the cortical bone on application of loads emulating masticatory forces. Materials and Methods: In this study, the stress distribution in the bone and the implant is evaluated by applying various loads that emulate the masticatory forces. The geometric models of cortical bone representing the premolar area and a basal implant model of the following specifications, longitudinal oval threaded pin (1.95 mm × 2.1/2.3 mm ø), height of the implant head (7.2 mm), and width of the implant head (3.5 mm) (BOI BS, IDHEDENTAL), were generated with Ansys software, and both the implant model and the bone model are superimposed to mimic the bone implant system as a unit. Results: Overall comparison of stress distribution on both implant shaft and implant neck showed that maximum stresses are located at implant neck irrespective of forces applied and minimum stresses are located at implant shaft. On overall comparison of stresses seen within the bone and the implant, it was observed that the maximum stresses were seen in the implant neck followed by the implant shaft followed by the bone interface. Conclusion: The present study concluded that the stress transmission is greatest during application of oblique load (70 N) followed by horizontal load (10 N) and the least by vertical load (35 N).

Aim: The aim of the study was to find the suitable situation for the fixation of “six” hole miniplates in open reduction and internal fixation of displaced and nondisplaced unilateral angle of the mandible fractures. Subjects and Methods: Displaced, nondisplaced, simple, compound (linear and noncomminuted) isolated unilateral angle fractures with or without occlusal derangement were included in this study. Statistical Analysis Used: Chi-square test was used for the statistical analysis. Results: The parameters assessed preoperatively and postoperatively were mouth opening, occlusion, neurosensory deficit such as paresthesia, intraoperative time, stability of fragments, and access to the retromolar trigone which showed that the six-hole titanium miniplate was clinically useful in special clinical situations when compared to four-hole titanium miniplate. Conclusion: To conclude, six-hole titanium miniplate was clinically useful when compared to four-hole titanium miniplate in the following special clinical situations such as bone loss following extraction of third molar, no posterior occlusion and instability of fracture moderately displaced fracture needs more stability.

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Background: In maxillofacial trauma, the most commonly encountered are mandibular fractures requiring treatment. Managing these fractures with rigid fixation abolish the intermaxillary fixation (IMF) requirement with reduction and early return to function. Aims: The present trial was carried out to assess clinically the effectiveness of new locking bone plate screw system postsurgically in mandibular fracture cases without IMF. Materials and Methods: In 18 subjects, the fracture site was exposed, fracture segments were reduced and approximated keeping the occlusal relationship is desirable using locking 2 mm mini plates and screws without IMF. The subjects were followed every week for initial 4 weeks followed by evaluation for up to 6 months every month to assess clinical and radiographic healing and the results were formulated. Results: Road traffic accident was the cause in 10 subjects (55.5%), followed by assault in 22.2% ( n = 4) subjects, and fall from height in 16.6% ( n = 3) subjects. Parasymphysis was involved in 44.4% ( n = 8), followed by symphysis in 11.1% ( n = 2) subjects. A minor complication of wound dehiscence was seen in 5.5% ( n = 1) subjects that were managed conservatively and a major complication of infection was also seen in 1 subject that required removal of the plate at 4 weeks of follow-up. Following plate removal, IMF was done for that subject. All other sites were healed uneventfully. Primary healing in bone was seen in 94.4% ( n = 17) subjects and it was not seen in the case with infection. Conclusion: Within the limitations, the present study concluded that the locking miniplate system is highly effective and reliable in treating mandibular fractures with acceptable results and a very low postoperative complications rate.