RT Journal Article T1 Alveolar Bone Ridge Augmentation Using Polymeric Membranes: A Systematic Review and Meta-Analysis. A1 Toledano-Osorio, Manuel A1 Toledano, Manuel A1 Manzano-Moreno, Francisco Javier A1 Vallecillo, Cristina A1 Vallecillo-Rivas, Marta A1 Rodriguez-Archilla, Alberto A1 Osorio, Raquel K1 bone regeneration K1 bone substitutes K1 polymeric membrane K1 ridge augmentation AB Alveolar bone ridge resorption occurred after natural teeth loss and it can restrict the possibility of dental implants placement. The use of bone regenerative procedures is frequently required. The existing evidence regarding the efficacy of horizontal bone ridge augmentation trough guided bone regeneration (GBR) using polymeric membranes was stated. A systematic review and meta-analysis were performed. Electronic and manual literature searches were conducted. Screening process was done using the National Library of Medicine (MEDLINE by PubMed), Embase, and the Cochrane Oral Health. Included articles were randomized controlled trials and observational studies. Weighted means were calculated. Heterogeneity was determined using Higgins (I2). If I2 > 50% a random-effects model was applied. It was found that the mean of horizontal bone gain was 3.95 mm, ranging from 3.19 to 4.70 mm (confidence interval 95%). Heterogeneity is I2 = 99% (confidence interval 95%) and significance of the random-effects model was p 50% a random-effects model was applied. It was found that the mean of horizontal bone gain was 3.95 mm, ranging from 3.19 to 4.70 mm (confidence interval 95%). Heterogeneity is I2 = 99% (confidence interval 95%) and significance of the random-effects model was p YR 2021 FD 2021-04-06 LK https://hdl.handle.net/10668/28109 UL https://hdl.handle.net/10668/28109 LA en DS RISalud RD Apr 8, 2025