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The permanent replacement of missing teeth in the maxillary posterior tooth region becomes a tedious task when it is confounded with bone atrophies. To overcome this problem and achieve successful rehabilitation, maxillary sinus membrane elevation procedures have been advocated as the most reliable means. The lateral window technique and the crestal approach are two of the most common approaches. These technologically developed procedures have reported high success rates in cases of deficient residual bone. Over time, there have been many advancements in these techniques that led to the development of user-friendly kits like the Lateral approach Sinus (LAS) kit and the Crestal approach Sinus (CAS) kit. In this case series, we have reported two cases, treated with either of these approaches and have compared the same. We aim at highlighting their ease of application in the clinical field and the promising results obtained with their use. Our clinical experience disclosed that maxillary sinus membrane advancement using both the kits have proven to be a reliable technique for implant placement in sites where insufficient bone is available.

The discovery of platelet-rich fibrin has enhanced the possibility of treating periodontal defects with significantly positive results in terms of bone defect fill, probing pocket depth, and clinical attachment level, apart from aiding in healing of wounds in other surgical procedures. This case series describes the use of platelet-rich fibrin (PRF) as a membrane along with allografts, in the treatment of intrabony periodontal defects, and the success of this treatment in eliminating factors such as deep periodontal pockets. The use of PRF in periodontal surgical procedures has been amply supported by various authors in the literature. Hence, it can be concluded from this case series that PRF can be used as an autologous alternative to the artificial materials for specifically treat intrabony periodontal defects with equal or better clinical outcomes.