Zijderveld SA, et al. - Researchers sought to compare the vertical dimensional changes with regard to graft height in a long-term follow-up in patients treated with 2 different grafting materials used in maxillary sinus floor elevation procedures. Over the 5-year period following maxillary sinus floor elevation, radiographic reduction of the vertical height was resulted by both β-tricalcium phosphate (β-TCP) and mandibular bone grafts. In the first 1.5 year, after an initial height reduction, minimal subsequent changes were seen. Authors did not observe any significant differences between the two types of grafting material. No statistically significant difference was seen in reduction between the three locations for vertical bone height and graft height, respectively.