Oscar Decco

• National University of Entre Rios

In the implant dentistry field, rehabilitation through osseointegrated implants have been a huge advance, leading to excellent outcomes. Biomaterial integration to bone tissue determines the implant clinical success and the recovery of lost functionality, depending on clinical and engineering factors and patient whole health. Because of this, it is...

Background: Osseointegration allowed for a breakthrough in biomaterials and techniques and it has contributed to increased application of dental implants. However, insufficient bone level is a frequent problem and it creates an anatomically less favourable base for implant placement. The first surgical procedure should comprise the reconstruction o...

Antecedentes: La osteointegración ha permitido un gran avance en biomateriales y técnicas, y ha contribuido un mayor uso de implantes dentales. Sin embargo, la existencia de un nivel óseo insuficiente es un problema frecuente y crea una base anatómicamente menos favorable para la colocación de implantes. El primer procedimiento quirúrgico debe comp...

Photofunctionalization of implant materials with ultraviolet (UV) radiation have been subject of study in the last two decades, and previous research on CoCrMo discs have showed good results in terms of bioactivity and the findings of apatite‐like crystals in vitro. In the current study, CoCrMo domes were photofunctionalized with UV radiation of 25...

Objective: To analyse a set of morphological features from digital radiographs (RX) and bone mineral density (BMD) values estimated from quantitative computerized tomography scans (QCT scans) of the knee joint of an osteoporotic rabbits, and to determine the relationship and correlation of these variables to be considered as an alternative diagnosi...

Objective: To analyse a set of morphological features from digital radiographs (RX) and bone mineral density (BMD) values estimated from quantitative computerized tomography scans (QCT scans) of the knee joint of an osteoporotic rabbits, and to determine the relationship and correlation of these variables to be considered as an alternative diagnos...

Cr-Co-Mo (ASTM F75) alloy has been used in the medical environment, but its use as a rigid barrier membrane for supporting bone augmentation therapies has not been extensively investigated. In the present study, Cr-Co-Mo membranes of different heights were placed in New Zealand white, male rabbit tibiae to assess the quality and volume of new bone...

Although there are several studies of the ultraviolet (UV) light-mediated photofunctionalization of titanium for use as implant material, the underlying mechanism is not fully understood. However, the results of in vitro and in vivo studies are very encouraging. The use of UV photofunctionalization as a surface treatment on other implant materials,...

Bone is a living tissue whose main mechanical function is to provide stiffness, strength and protection to the body. Both stiffness and strength depend on the mineralization of the organic matrix, which is constantly being remodelled by the coordinated action of the bone multicellular units (BMUs). Due to the dynamics of both remodelling and minera...

Values of the parameter of the model presented in supporting information. (DOCX)

Results of the model by using the Specific Surface from Martin [30] (?srM) and from Adams et al.(2014) measurements (?srAZ), compared with other data from Zioupos et al.[13]. Derivation of different model outputs depending on different inputs for the bone surface density function. Note that the smaller specific surface from Adams et al.[28] implies...

Appendix to the main text describing the early evolution of the model. (DOCX)

Apparent bone density vs ash density. Comparison of the model output to recent data in the literature. Measurements extracted from Schileo et al. [38] superimposed to numerical results derived from the present model for (?sr = 150). Note that the ash density is defined as the ratio of mineral mass to the reference bone volume (?mVm/Vt). (TIF)

Histomorphometry of human elephant and human femoral cancellous samples in comparison. Plots of Tb.Th, Tb.N, Tb.Sp and BS/TV versus BV/TV. The histomorphometry of these two species is very similar and thus the full ranges of samples used here allowed us to build a more generic model. This model has been validated for the present elephant samples bu...

Bone is a living tissue whose main mechanical function is to provide stiffness, strength and protection to the body. Both stiffness and strength depend on the mineralization of the organic matrix, which is constantly being remodelled by the coordinated action of the bone multicellular units (BMUs). Due to the dynamics of both remodelling and minera...

Background: Surgical extraction of ankylosed roots may cause severe defects of the alveolar crest. The aim of the present study was to determine the effects of flapless enucleation on the frequency of osteotomy and the maintenance of the alveolar crest width. Method: Ten patients (3 m, 7 f) requiring extractions in the anterior maxillary zone were...

When alveolar ridges lack the appropriate bone volume for implant placement, additional surgical procedures are necessary. In the posterior maxilla, the pneumatization of the maxillary sinus reduces the residual crestal height, and to perform implant placement, several sinus floor elevation techniques have been developed. These techniques involve s...

During almost two decades of research in the field of Tissue Engineering andRegenerative Medicine, a variety of biomaterials and techniques have been developed, and a series of results and clinical evidence have been published to support and improve bone regeneration and augmentation processes. The latest techniques include the use of growth factor...

Background: Bone augmentation is a subject of intensive investigation in regenerative bone medicine and constitutes a clinical situation in which autogenous bone grafts or synthetic materials are used to aid new bone formation. Method: Based on a non-critical defect, Co-Cr barrier membranes were placed on six adult Fauve de Bourgogne rabbits, divid...

The buccal alveolar wall represents the most important structure to provide shape and volume of the alveolous following tooth extraction. The aim of the study was the evaluation of buccal alveolar bone structures following minimally invasive surgery. In 15 patients (3 male, 12 female), aged 20–67 years, 3 central incisors, 5 lateral incisors, and 7...

To assess bone augmentation based on a non-critical defect, 1.5 mm deep cobalt-chromium (Co-Cr) barrier membranes were placed on seven adult California rabbits with three different grafting situations: whole blood, whole blood with tricalcium phosphate (TCP), and TCP mixed with bone marrow cells. Macroscopic assessment of the animals was performed...

Purpose: Primary stability and micromovement of dental implants depend on structural properties of the surrounding bone and on implant dimension and design. The purpose of this study was to provide objective data for the influence of implant diameter on the displacement of titanium screw implants. Materials and methods: Ninety Semados implants (...

Titanium barriers have been used for guided bone regeneration in preclinical and preliminary clinical reports as a possible alternative to bone grafting. In two cases with lateral bone defects, rigid titanium barriers were used to provide a secluded space in conjunction with bone substitutes. Sufficient lateral bone volume was generated for implant...

The centripetal resorption of maxilla is a continuous process after tooth loss. For treatment of deficient bone sites, autologous bone grafts may be used, as an alternative, biomaterials can be applied which do not require intra or extraoral donor sites. The present report describes the use of occlusive barriers and cortical particulate allograft i...

Titanium is the gold standard material in oral implantology due to its convenient properties: biocompatibility, low density, high resistance, high rigidity, excellent bone attachment and biological stability. Many researchers have proved that it is possible to improve the implant fixation and to reduce osseointegation time through surface treatment...

The trauma of surrounding bone structures during exodontia represents a mayor clinical shortcoming of conventional oral surgery. An alternative minimal invasive technique is presented to support aesthetic rehabilitation by conservation of alveolar bone walls. Endoscopically assisted root splitting (EARS) is a new technique for root removal wothout...

It has previously been demonstrated that immediate full occlusal loading of freestanding anterior implants can be performed using cortical satellite implants, obtaining a success rate similar to conventional protocols. The aim of this report was to present the outcomes after 36 months after initial placement. Twenty patients received 2 single-stand...

Aim: The study aims to provide objective data for the displacement of titanium screw implants in trabecular bone specimens. One hundred Semados implants (Bego, Bremen, Germany) were inserted in bovine type IV bone specimens. All implants had a diameter of 3.75 mm; 50 implants had a length of 8.5 mm and 50 implants had a length of 15 mm. Insertion t...

Orofacial biofunction comprises muscular and physical effects, which may contribute to stabilization of the oropharyngeal airway. The tongue-repositioning manoeuvre (TRM) provides physical stabilization of the tongue and the soft palate together with, as a prerequisite, a nasal breathing mode. The aim of the present study was to evaluate the influe...

Se estudió la Regeneración Ósea Guiada (ROG) en defectos óseos críticos realizados en tibia de conejo, mediante la utilización de membranas reabsorbibles de PLA/PGA microfijadas a través de microtornillos de Vitalio y microplates Luhr. Macroscópicamente, no se encontraron restos de membrana en ninguna muestra. En todas ellas se observó tejido óseo...

Freestanding implants with mandibular overdentures are used frequently after 3 months' healing time. Immediate full loading may be applied to this approach if sufficient primary stability is provided. The present study evaluates the success rate of two single-standing interforaminal implants stabilized with cortical satellite implants and loaded im...

Die vertikale Kieferkammaugmentation mit Membranen als Alternative zur Knochentransplantation ist bisher noch nicht in der Routine etabliert. Insbesondere die Frage einer Optimierung der Platzhaltefunktion von Membranen scheint bisher ungenügend beachtet. An einem Fallbeispiel soll die Anwendung einer minimalinvasiven Tunnelpräparationstechnik und...

Primary stability of dental implants is mandatory for their osseointegration. A method is described that allows objective measurements of implant displacement in bone sites during lateral loading. Ten samples of bovine bone (2 cm x 2 cm) with bone type II, III, and IV according to Lekholm and Zarb were used for the experiment. Ten Semados dental im...

Guided Bone Regeneration (GBR) was studied on critical sized bone defects in rabbit tibia, by using resorbable membranes of PLA/PGA microfixed through Vitallium microscrews and Luhr microplates. Macroscopically, no remains of membrane were found in any of the samples. In each sample, compact osseous tissue was observed at the osteotomy zone as in t...