RT Journal Article
T1 Clinical and radiographic outcomes of allogeneic block grafts for maxillary lateral ridge augmentation: A randomized clinical trial
A1 González Fernández-Tresguerres, Francisco
A1 Cortes, Arthur R. G.
A1 Hernández Vallejo, Gonzalo
A1 Cabrejos Azama, Jatsue
A1 Tamimi, Faleh
A1 Torres García Denche, Jesús
AB AbstractBackground: A main drawback of bone block graft surgery is the resorption occurring in early stages of healing. To our knowledge, there are no studies comparing out- comes of freeze-dried bone allograft (FDBA) blocks with different architecture. Purpose: The aim of this work was to investigate different factors that can affect graft resorption and to compare the resorption rates of two different types of alloge- neic blocks, corticocancellous and cancellous.Materials and Methods: A randomized clinical trial was designed. Twenty-eight patients referred for onlay bone augmentation prior to implant placement were included in the study. Preoperative computerized tomography (CT) was taken for all patients. Patients received FDBA blocks of either cancellous or corticocancellous bone obtained from the iliac crest. After a 4-month follow-up, postoperative CT was taken. Then, another surgery was performed, with the purpose to place dental implants. The aforementioned groups were compared for bone resorption and implant outcome using analysis of covariance (ANCOVA) and repeated ANOVA mea- sures, respectively. Demographic data, trabecular bone density, and graft sites were also analyzed.Results: A total of 93 implants were placed in the augmented bone sites over 28 patients. A 100% survival rate was achieved during a mean follow-up period of 24 months in both groups. Higher bone resorption rate was found with cancellous bone grafts (29.2%±2.6) compared with corticocancellous grafts (19.3%±2.3). Moreover, higher resorption rates in patients with lower bone density (<185 Houns- field Units) (31.7% ± 3.1) and smokers (26.39% ± 2.3) were observed when compared with patients with higher bone density (>185 Hounsfield Units) (16.8% ± 2.1) and nonsmokers (22.1% ± 2.3), respectively.Conclusion: Within the limitations of this study, these findings indicate that both corticocancellous and cancellous FDBA grafts constitute a clinical acceptable alterna- tive for bone reconstruction, although cancellous grafts present higher resorption rates. Moreover, host factors such as patient's low bone density and smoking habits may also increase graft resorption rates.
PB Wiley
SN 1523-0899
YR 2019
FD 2019-08-16
LK https://hdl.handle.net/20.500.14352/92873
UL https://hdl.handle.net/20.500.14352/92873
LA eng
NO G. F. Tresguerres F, Cortes ARG, Hernandez Vallejo G, Cabrejos-Azama J, Tamimi F, Torres J. Clinical and radiographic outcomes of allogeneic block grafts for maxillary lateral ridge augmentation: A randomized clinical trial. Clinical Implant Dentistry and Related Research [Internet]. 2019 [citado 12 de enero de 2024];21(5):1087-98. Disponible en: https://onlinelibrary.wiley.com/doi/abs/10.1111/cid.12834.
DS Docta Complutense
RD 22 abr 2025