Marginal Bone‐Level Alterations at Implants Installed in Block versus Particulate Onlay Bone Grafts Mixed with Platelet‐Rich Plasma in Atrophic Maxilla. A Prospective 5‐Year Follow‐Up Study of 15 Patients

“…; Dasmah et al. ) and the remaining studies evaluated peri‐implant tissue stability after implant placement in previously augmented bone (von Arx et al. ; Hellem et al.…”

Section: Resultsmentioning

confidence: 99%

Long‐term outcomes of bone augmentation on soft and hard‐tissue stability: a systematic review

Lutz

Neukam

Simion

et al. 2015

Clinical Oral Implants Res

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“…The risk of bias for the included non‐randomized studies according to the ROBINS‐I tool is presented in Figure b and Supporting Information Appendix b. None of the studies were in a low risk of bias: one had signs of moderate bias (Beitlitum, Artzi, & Nemcovsky, ), five of serious bias (Barbu et al., ; Cordaro et al., ; Maiorana, Beretta, Salina, & Santoro, ; Shalash et al., ; Urban et al., ) and three of critical bias (Chiapasco, Abati, Romeo, & Vogel, ; Dasmah, Thor, Ekestubbe, Sennerby, & Rasmusson, ; Monje et al., ). The domain “bias due to confounding” was a source for critical risk of bias for three studies with overall critical risk of bias (Chiapasco et al., ; de Freitas et al., ; Monje et al., ).…”

Section: Resultsmentioning

confidence: 99%

Efficacy of lateral bone augmentation prior to implant placement: A systematic review and meta‐analysis

Naenni

Lim

Papageorgiou

et al. 2019

J Clinic Periodontology

119

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Aim The aim of the current systematic review was to critically appraise evidence from randomized and prospective non‐randomized comparative clinical trials about the efficacy of lateral bone augmentation prior to implant placement and their outcome regarding bone width gain. Materials and Methods Eight databases were searched until May 2018 for randomized and prospective non‐randomized comparative trials on lateral bone augmentation prior to implant placement. After elimination of duplicate studies, data extraction and risk‐of‐bias assessment according to the Cochrane guidelines, random‐effects meta‐analyses of mean differences (MD) or relative risks (RR) and their 95% CIs were performed, followed by subgroup, meta‐regression and sensitivity analyses. Results Overall, 25 trials (16 randomized/9 non‐randomized) were identified, which included a total of 553 patients (42.2% male; mean age of 43.9 years). In these included studies and populations, various modalities for primary lateral bone augmentation rendered implant placement feasible. Small discrepancies were found between overall clinical and radiographic gain (pooled gains of 3.45 ± 1.18 mm versus 2.90 ± 0.83 mm, respectively), but were not statistically significant. Bone width gain was significantly inversely associated with baseline bone width (pooled effect: −0.35 mm/mm; 95% CI: −0.63 to −0.07 mm; p = 0.01). Additionally, % graft resorption was associated with patient age (36%/year, 95% CI: −0.62 to −0.11 mm; p = 0.01). The presence of xenograft added to autologous graft led to less resorption compared to autologous graft alone (MD: 1.06 mm; 95% CI: 0.21 to 1.92 mm; p = 0.01). Barrier membrane did not yield significant difference in terms of bone width gain (MD: −0.33 mm; 95% CI: −2.24 to 1.58 mm; p > 0.05) and graft resorption (MD: 0.84 mm; 95% CI: −1.42 to 3.09 mm; p > 0.05). However, the quality of evidence ranged from very low to moderate due to bias and imprecision. Conclusions Initially smaller bone dimensions are associated with favours larger bone width gain, which indicates that a severe lateral bone deficiency can be effectively augmented applying primary lateral bone augmentation. Both Patients’ age and recipient site (maxilla or mandible) seem to influence graft resorption. The addition of a xenograft can be helpful in reducing graft resorption. Existing evidence from randomized and prospective non‐randomized trials on humans indicates that lateral bone augmentation prior to implant placement can successfully increase bone width. There are some indications that patient‐related, site‐related, and technique‐related characteristics might influence the amount of gained bone width, but the quality of evidence is for the most part hampered by the small number of existing studies and methodological limitations that might lead to bias.

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“…[13][14][15] In addition, the analysis showed that implants placed in bone augmented with allograft onlays were even longer than those placed in bone augmented with autograft onlays. This is probably because of the vertical bone resorption that occurs in autograft onlays during the first year after onlay placement, 68 although further clinical studies are needed to investigate the difference of onlay graft resorption between autograft and allograft onlays.…”

Section: Implant Lengthmentioning

confidence: 99%

Bone Augmented With Allograft Onlays for Implant Placement Could Be Comparable With Native Bone

Al‐Abedalla

Torres

Cortes

et al. 2015

Journal of Oral and Maxillofacial Surgery

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Marginal Bone‐Level Alterations at Implants Installed in Block versus Particulate Onlay Bone Grafts Mixed with Platelet‐Rich Plasma in Atrophic Maxilla. A Prospective 5‐Year Follow‐Up Study of 15 Patients

Abstract: The present follow-up study showed that there is no significant difference in the extension of resorption between block- and particulate autogenous bone grafts over a 5-year period. Most of the resorption occurred during the first year in function.

Cited by 31 publications

References 24 publications

Long‐term outcomes of bone augmentation on soft and hard‐tissue stability: a systematic review

Long‐term outcomes of bone augmentation on soft and hard‐tissue stability: a systematic review

Efficacy of lateral bone augmentation prior to implant placement: A systematic review and meta‐analysis

Bone Augmented With Allograft Onlays for Implant Placement Could Be Comparable With Native Bone

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