15‐Year Retrospective Study on the Success Rate of Maxillary Sinus Augmentation and Implants: Influence of Bone Substitute Type, Presurgical Bone Height, and Membrane Perforation during Sinus Lift

Abstract

Objectives. To evaluate the success rate of bone grafts and implants carried out at the Latin American Institute for Research and Dental Education (ILAPEO), considering the following: (i) the different pure bone substitutes (autogenous, xenogeneic, and alloplastic), (ii) the presurgical bone height, and (iii) how the treatment is compromised when membrane perforation occurs during sinus lift in maxillary sinus surgeries. Material and Methods. The initial sample comprised 1040 records of maxillary sinus lifting surgeries. After evaluation, the final sample retained 472 grafts performed using the lateral window technique with a total of 757 implants. The grafts were divided into 3 groups: (i) autogenous bone ( n = 197 ), (ii) xenogenous bovine bone ( n = 182 ), and (iii) alloplastic material ( n = 93 ). One calibrated examiner classified the sample into two groups based on the residual bone height (<4 mm and ≥4 mm) of the area of interest measured on parasagittal sections of tomographic images. Data on membrane perforation occurrences in each group were collected; qualitative variables were described using frequency, expressed as percentages. The Chi-square test was used to analyze the success of the graft types and the survival rate of the implants as a function of the grafted material and the residual bone height. The Kaplan-Meier survival analysis was used to calculate the survival rate of bone grafts and implants according to the classifications adopted in this retrospective study. Results. The success rate of grafts and implants was 98.3% and 97.2%, respectively. There was no statistically significant difference in the success rate among the different bone substitutes ( p = 0.140 ). Only 8 grafts (1.7%) and 21 implants (2.8%) failed. There was a greater success rate for both grafts (96.5%) and implants (97.4%) when the bone height was ≥4 mm. The success rate in the 49 sinuses in which the membrane was perforated was 97.96% for the grafts and 96.2% for the implants. The follow-up periods after rehabilitation ranged from 3 months to 13 years. Conclusions. Within the limitations of the data analyzed in this retrospective study, maxillary sinus lift was a viable surgical technique that enabled implant placement with a predictable long-term success rate, regardless of the type of material used. The presence of membrane perforation did not interfere with the success rate obtained for grafts and implants.

Three Milliliters of Peripheral Blood Is Sufficient for Preparing Liquid Platelet-Rich Fibrin (PRF): An In Vitro Study

“…Sections of 3–4 µm were then created using a rotary microtome (Leica RM2255; Wetzlar, Germany) and stained using hematoxylin and eosin staining (H&E) for a general evaluation of the cell distribution. Additional sections were stained using specific immunohistochemical antibodies to identify platelets (CD 61) and leukocytes (CD45) using an Autostainer (Lab Vision™ Autostainer 360, Thermo Scientific, Waltham, MA, USA) following previously published methods [ 4 , 18 ]. The CD-61 antibody (1:100 [ab225742]) and CD-45 antibody (1:100 [ab10558]) were used as primary antibodies.…”

“…However, some drawbacks such as patient morbidity, tissue size limitations, and donor-side burdens underscore the need for innovative alternatives [ 3 ]. Biomaterials of natural origin, such as allogeneic and xenogeneic materials, as well as those of synthetic origins, serve as effective therapeutic options for specific indications [ 4 ]. Additionally biodegradable polymers such as polylactic acid (PLA) and polylactic-co-glycolic acid (PLGA), as well as biodegradable bone fixation materials based on polyhydroxy acids (polyglycolide acid (PGA), polylactide (PLLA and PDLA)), have shown promising results in different fields [ 5 ].…”

Determination of the Features of the Maxillary Sinuses Floor Contours in Patients With Different Forms of the Facial Skeleton for Preparation to Open Sinus Lift Surgery

“…The irregular shape (either with depressions or zigzag, septa/exostoses) of contours of the maxillary sinuses floor are more common for the euriprosops (patients with broad face) -in 27.8% of cases, whereas the narrow (conical) shape of them present more often in the leptoprosops (patients with narrow face) -χ 2 Постановка проблеми. Операція синус-ліфтингу є найбільш поширеним і надійним способом збільшення кісткового об'єму у разі дефіциту альвеолярного відростка верхньої щелепи у бічних її відділах, що створює умови для подальшого встановлення зубних імплантів [1][2][3]. Однак під час проведення синус-ліфтингу можуть виникнути ускладнення.…”

A New Simplified Autogenous Sinus Lift Technique

“…A retrospective study of maxillary sinus lift showed it to be a viable surgical technique allowing implant placement with predictable long-term success regardless of bone graft material type. The success rate of grafts and implants was not affected by the presence of sinus membrane perforation [13]. Another study prospectively evaluated implant status, marginal bone loss, and maxillary sinus floor augmentation outcomes in patients undergoing sinus lift and simultaneous implant placement using bone grafts harvested adjacent to the actual surgical site.…”