Fig. 1

Three-dimensional reconstruction image of maxMT. a Sagittal view, double-ended arrow: the length of maxMT; Single-ended arrow: the minRABH. b Coronal view, double-ended arrow: the thickness of the mucosa of the maxillary sinus. c Horizontal view. Abbreviations: maxMT maxillary sinus mucosal thickening; miniRABH minimum residual alveolar bone height.