Mark Steven Howe takes a detailed look at this Bayesian network meta-analysis (NMA) assessing the relative performance of diffferent biomaterials used for maxillary sinus augmentation. 34 RCTs with 28 different treatment options providing a large number of potential pairwise comparisons although only a small number used direct data. The findings suggest little difference beween the various biomaterials but the available studies are small with only 5 being at low risk of bias.