Maxillary sinus augmentation by crestal access: a retrospective study on cavity size and outcome correlation

Abstract

This study is the first quantitative and statistically significant confirmation that crestal technique with residual ridge height <5 mm is more appropriate and predictable, in terms of intra-sinus bone coverage, in narrow than in WS.

New bone formation after transcrestal sinus floor elevation was influenced by sinus cavity dimensions: A prospective histologic and histomorphometric study

“…Mean GR after 6 months was 1.7 mm but with wide variability (range 0.1–7.7 mm): linear regression models suggested very weak negative correlations between GR and NFB ( R 2 = .140, p = .012) and between GR and WGC ( R 2 = .192, p = .003), in accordance with the studies by Spinato et al. (), Zheng et al. () and Cheng et al.…”

“…(), in which NFB percentage ranged between 7.6% and 75.1% six months after tSFE, even if performed with hydrodynamic ultrasonic‐driven approach. However, multivariate analysis revealed a strong negative correlation between NFB and SW ( R 2 = .793, p = .0001), in agreement with the conclusions of recent studies on tSFE, based both on radiographic (Cheng et al., ; Spinato et al., ; Zheng et al., ) and histomorphometric data (Lombardi et al., ).…”

“…Previous studies demonstrated with histologic data a negative correlation between sinus width and new bone formation after performing lateral augmentation (Avila et al., ; Kolerman, Tal, & Moses, ; Soardi, Spinato, Zaffe, & Wang, ). Radiographic studies by Spinato, Bernardello, Galindo‐Moreno, and Zaffe (), Zheng et al. () and Cheng et al.…”

Guided “Sandwich” Technique

“…22,29,37 Furthermore,the use of xenografts entailsa slower remodeling process with a high long-term percentage of residual graft. 58,59 CONCLUSION With the evident limits of a case report, the optimal clinical outcome and the absence of complications evidence the usefulness of the guided sandwich technique in markedly atrophic mandibles allowing safe osteotomies. 39 In this case report, the authors preferred to use a human cancelous bone block between the coronal osteotomized segment and the basal bone to obtain a better and faster revascularization of the graft from the native bone.…”

Variation in bucco‐palatal maxillary sinus width does not permit a meaningful sinus classification

“…In this context, SW appears to influence bone regeneration and/or graft consolidation after MSFA; that is, new bone formation and/or graft consolidation in central aspects of a "wide" MS seems to require longer time compared with a "narrow" MS, due to the longer distance angiogenic/osteogenic factors and cells need to cover to populate the graft. Indeed, several publications have shown reduced proportions of vital bone and/or increased loss of augmentation volume/height in patients with wide MS (Avila et al, 2010;Lombardi et al, 2017;Soardi, Spinato, Zaffe, & Wang, 2011;Spinato, Bernardello, Galindo-Moreno, & Zaffe, 2015); for example, it has been reported that MS >15 mm wide presented about 2-3 times less vital bone compared with MS <10 mm wide, 6 months post-MSFA (i.e., 13% vs. 31%, respectively) (Avila et al, 2010).…”