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Objective: The aim was to evaluate the 1‐year implant outcome and patient‐related outcome measures (PROMs) after maxillary sinus membrane elevation and coagulum (test) compared with maxillary sinus floor augmentation and a 1:1 ratio of autogenous bone graft from the buccal antrostomy and deproteinised porcine bone mineral (DPBM) (control). Materials and methods: Forty patients (30 female, 10 male) with a mean age of 50 years (range 25–71 years) and an alveolar ridge height between 4 and 7 mm were randomly allocated to test or control. Outcome measures included survival of suprastructures and implants, implant stability quotient, health status of the peri‐implant tissue, peri‐implant marginal bone loss, frequency of complications and PROMs using Oral Health Impact Profile‐14 combined with questionnaires assessing patient's perception of the peri‐implant soft tissue, implant crown, function of the implant, and total implant treatment outcome using visual analogue scale. Mean differences were expressed with standard deviation and 95% confidence interval. Level of significance was 0.05. Results: All suprastructures and implants were well‐functioning after 1‐year of functional implant loading. No significant difference in any of the applied outcome measures was observed between test and control. Both treatments revealed high patient satisfaction scores and significant improvement in oral health‐related quality of life. Conclusion: There were no significant differences in implant outcome and PROMs between test and control, after 1‐year of functional implant loading. Neither of the treatments can therefore be considered better than the other. Thus, long‐term randomized controlled trials are needed before definitive conclusions can be provided about the two treatment modalities. [ABSTRACT FROM AUTHOR]