Microthreaded Collars Better Preserve Crestal Bone Despite Similar Inflammatory Response, claims research
Researchers have found in a new study that Both microthreaded versus Smooth implant collar designs showed limited impact on early peri-implant inflammation; however, microthreaded collars were more effective in preserving crestal bone.
A study was done to evaluate the impact of implant collar design on peri implant inflammatory biomarkers and crestal bone levels over a 6-month period. This pragmatic, randomized, parallel-group clinical trial was conducted at the Department of Prosthodontics and Crown and Bridge, Manav Rachna Dental College, between May 2023 and May 2024. The study included 30 systemically healthy patients aged 20–60 years with a single missing tooth in the mandibular molar region. Patients were randomly assigned to two groups based on the implant collar design – smooth or microthreaded. Implants were placed following a standardized two stage surgical protocol. Peri-implant crevicular fluid was collected at the time of implant placement, 3 months, and 6 months postplacement to assess inflammatory biomarkers (interleukin-1 [IL-1β] and tumor necrosis factor alpha [TNF-α]) using ELISA. Peri-implant crestal bone levels were measured radiographically at the same intervals. Statistical analysis was performed using the SPSS (version 21.0). The data were analyzed using appropriate statistical tests. P < 0.05 was considered statistically significant.
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