Installation Of Dental Implants Research Articles

DIGITAL PROTOCOL OF DENTAL IMPLANTATION WITH THE USE OF AN INDIVIDUAL BONE GRAFT AND THE CREATION OF A SOFT-TISSUE BARRIER

The article presents a method of rehabilitation of a patient with partial secondary adentia in segment 3, complicated by atrophy of the alveolar process. During the treatment, bone augmentation was performed using an individual bone graft with simultaneous installation of dental implants, conditions were created for the formation of a soft-tissue barrier, permanent orthopedic structures were made based on installed implants. Common types of bone grafting according to Kuri and Urban are described. A clinical case is presented: the initial situation, anamnesis, X-ray, CT scan. The logic of decision-making when choosing treatment in a given clinical case is described, taking into account the individual characteristics of the patient

Peri-implant mucosal fenestration and histologic observation of bone xenograft material 7 years after implant installation: A case report.

Bone augmentation is often required before the installation of dental implants. Here, we report a case for a patient who previously received bone augmentation at the upper right jaw using a xenogenic graft, followed by successful implant installation. Seven years later, the patient presented with mucosal fenestration with bone exposure at the area and gave a history of a recent diagnosis of cutaneous lichen planus. Several attempts were made to manage the situation, and finally, we resorted to connective tissue graft placement at the site. A piece of bone was sent for histologic evaluation, where the results indicated the presence of un-resorbed graft material surrounded by inflammatory cells, with no evidence of bone formation in the area. The case presents histologic evidence for the lack of new bone formation using xenograft over the evaluation period. The case also shows lichen planus, a possible cause for oral complication for patients undergoing augmentation and implant installation.

Evaluation of the Effectiveness of Bone Grafting in Alveolar Ridge Augmentation Using the Two-Stage Splitting Technique.

Stimulation of neoosteogenesis is the main mechanism of osseointegration during installation of dental implants, bone tissue recession, and alveolar process augmentation in adentia. In experiments on miniature pigs, we used the technology of two-stage splitting of the ridge of the alveolar process of the mandible in combination with a xenograft that was placed between the fragments of the split bone plate. The morphology of the reparative process and the distribution of osteogenic differentiation markers in the compact and trabecular bone of the alveolar crest were studied. Signs of reparative osteogenesis were observed in the bone regenerate that had a lamellar structure, formed osteons, and foci of woven tissue. It was found that the xenograft was replaced by newly formed trabecular bone tissue. These sites were characterized by increased expression of osteocalcin and CD44. Augmentation technology through two-stage splitting provides trophic relationship of osteoprogenitor cells and is an effective method of osteogenesis stimulation in the alveolar process.

МУЛЬТИМОДАЛЬНАЯ КОНЦЕПЦИЯ В ДЕНТАЛЬНОЙ ИМПЛАНТАЦИИ НА СОВРЕМЕННОМ ЭТАПЕ РАЗВИТИЯ

In recent years, more attention has been paid to the problems of using dental implants in difficult anatomical conditions, due to the deficiency of the volume of jaw bone necessary for the installation of dental implants. However, in the clinical practice of a dentist-surgeon, there are more frequent categories of patients with reduced alveolar bone, for whom along, multi-stage treatment involving a number of osteoplastic surgeries is not acceptable.

Study of the stability of dental implants on the background of the hepatobiliary system pathology

Annotation. Today, dental implantation is one of the most important methods for restoring dental defects. This method allows restoration of tooth row defects without preparation of hard tooth tissues. Endoosseous dental implantation in patients with concomitant pathology requires special attention, among which pathology of the hepatobiliary system stands out, which has recently tended to increase. This is primarily due to the epidemiology of viral hepatitis, deterioration of the external environment, and complex social conditions of life. The purpose of our work was to investigate the stability of dental implants using the analysis of frequency-resonance indicators in patients with hepatobiliary system pathology. A study of the stability coefficient was conducted in 26 patients who had intraosseous dental implants installed. All patients were divided into 2 groups: the first – main (14 patients) – without pathology of the hepatobiliary system; the second – comparative (12 patients) - included patients who had disorders of the hepatobiliary system, which were established on the basis of the collected anamnesis and violations of biochemical indicators. There were equal numbers of men and women in each group. There were 8 (57.2%) women and 6 (42.8%) men in the first group, and 5 (41.7%) men and 7 (58.3%) women in the second group. For all patients, dental intraosseous implantation was performed in one or two zones of included defects. After the installation of dental intraosseous implants, the stability of the dental implant was determined using a frequency-resonance study. Similar studies were also conducted after the opening of the dental implants before the installation of the orthopedic structure after 6 months. The results. We found a significant difference in the coefficient of stability of dental implants in patients with hepatobiliary system pathology and without liver pathology (p<0.05). In the main research group, the following coefficients of stability of dental implants were obtained: immediately after the installation of dental implants intraoperatively, a study of indicators was carried out, which corresponded to the level of 70,41±2,97 points, and already after 6 months this indicator of the stability coefficient in±creased and was fixed at the level 75,41±2,59 points. In the patients of the second research group (comparison), immediately after the installation of dental implants, the stability coefficient was at the level of 42.56±3.53 points, and 6 months after the installation of dental implants – 44,39±3,26 points. Liver pathology negatively affects the coefficient of stability of dental implants and their osseointegration, worsening them by 1,7 times. With liver pathology, osteopenia is observed, which requires preoperative and postoperative hepatoprotective correction and osteotropic therapy.

EXPERIENCE IN APPLYING OSTEOPLASTIC MATERIALS CONTAINING MULTIPOTENT MESENCHYMAL STROMAL CELLS AND HYDROXYAPATITE IN PATIENTS BEFORE THE PROCEDURE OF DENTAL IMPLANT PLACEMENT

Introduction of modern osteoplastic material into practical work is extremely important for effective filling of bone defects, restoration of lost periodontal tissue, relief of postoperative symptoms and reduction of inpatient treatment of patients after surgery. Up-to-date materials will improve regenerative and reparative properties of the bone tissue and promote its increasing volume for further successful dental implantation. Objective of the research was to determine an application effect of osteoplastic materials based on multipotent mesenchymal stromal cells of the adipose tissue and hydroxyapatite used for filling bone defects during dental surgery in patients, before dental implantation. Materials and methods. 140 patients were examined and treated by means of dental implantation. Before implantation, in order to increase the volume of the bone tissue of the cellular processes and cellular part of the corresponding jaw, various osteoplastic materials were applied during surgery. All the patients were distributed into III groups: І included 49 individuals (35,0 %), II group – 62 patients (44,29 %), and III (control) group included 29 patients (20,71 %). In I group a bone tissue substitute based on hydroxyapatite was used to restore the bone tissue of the cellular processes and the cellular pert of the corresponding jaw. In II group augmentation of bone defects was carried out by means of the suggested composition consisting of multipotent mesenchymal stromal cells of the adipose tissue, platelet-rich blood plasma and bone tissue substitute based on hydroxyapatite. In ІІІ group, the wound healed spontaneously under a blood clot. Results. After installation of dental implants, the peri-implant tissues were found to restore completely in cases where the combination of multipotent mesenchymal stromal cells of the adipose tissue, a bone substitute based on hydroxyapatite, and platelet-rich blood plasma was used for filling bone defects. Moreover, according to X-ray findings obtained 12 months later, in patients from II group the volume of the bone tissue resorption in the areas of implantation was 1,4 and 1,8 times lower than in individuals from І group, р1<0,01, and ІІІ control group, р2<0,01, respectively. Conclusions. The effectiveness of application of osteoplastic materials based on multipotent mesenchymal stromal cells of the adipose tissue and hydroxyapatite is confirmed by the values of the stability coefficient of implants. After 12 months of the research, these values were reliably higher than those of the reference, р<0,01. They were 12,43 % and 19,33 % higher than in patients from І main group and ІІІ control group.

РОЛЬ ХОЛОДНОЙ АТМОСФЕРНОЙ ПЛАЗМЫ НА СОВРЕМЕННОМ ЭТАПЕ РАЗВИТИЯ ОТЕЧЕСТВЕННОЙ СТОМАТОЛОГИИ

Dental implants are often used in everyday clinical practice. The micro-nanotopography of the surface dental implants used is formed by - mechanical processing, sandblasting, acid etching, oxidation, etc. These methods of surface creations lead to the generation defects in the crystal structure, which negatively affects the physico-mechanical and biological properties of the dental implant. Coatings made by classical technologies have negative properties: increased propensity to microcracks, low fatigue strength, insufficient wear resistance, hydrophobic properties, low dielectric parameters. The purpose of our work is to create a new technological process and a new coating with the elimination of these factors. We have developed a new glass-ceramic nanocoating Pateks based on silicon (SiOCN system), which is made by deposition of vapors of organic and minerals compounds of silicon, carbon, nitrogen at the atmospheric pressure by the PACVD method with activation by cold atmospheric plasma. The developed technology combines the process of coating and plasma sterilization at atmospheric pressure without the use of vacuum chambers and specialized baths using small-sized and low-power equipment, which can be used in clinical settings before the installation of dental implants and suprastructures

Horizontal Alveolar Ridge Augmentation in the Mandibular Posterior Region Using Biphasic Calcium Phosphate and Leukocyte- and Platelet rich fibrin (L-PRF): A case report.

In bone defects caused by tooth loss, tissue reconstructions are necessary to enable prosthetic rehabilitation with dental implants. Diverse techniques and materials of different origins are used for this purpose. Leukocyte- and Platelet-Rich Fibrin (L-PRF) has been used in association with osteoconductive biomaterials in procedures of bone regeneration and for covering grafted areas. The aim of this article was to demonstrate a clinical case of bone grafting in the posterior region of the mandible, performed with the use of synthetic biomaterial composed of biphasic calcium phosphate associated with Leukocyte- and Platelet-Rich Fibrin for performing bone augmentation in an alveolar ridge with a horizontal defect, thereby enabling later installation of dental implants and prosthetic rehabilitation in the region. Keywords: bone graft, biomaterials, leukocyte- and platelet-rich fibrin, bone substitutes, dental implants.

Tanggung Jawab Hukum Dokter Gigi Atas Terjadinya Risiko Terhadap Pemasangan Implan Gigi Pada Pasien

The development of dental implant science and technology has developed rapidly, the installation of dental implants is an option in replacing missing teeth. Recently, the construction of denture bridges with implant supports has been widely used and is often successful, however this does not rule out the possibility of failure in dental implant treatment. Granting additional authority to dentists with the aim of equal distribution of health services in Indonesia, there are no rules that clearly regulate the authority of dentists in placing implant dentures. This research is structured using the type of normative legal research, namely research that is focused on examining legal norms in an applicable statutory regulation related to the subject matter. The purpose of this study was to analyze the authority of dental implant placement by dentists and to analyze the legal consequences associated with the risk of dental implant placement in patients. The results of this study indicate that dental implants are the clinical authority of specialist dentists, dentists' authority in installing dental implants is limited to theoretical understanding, regarding various types of dental implant therapy, mastering application theories in dental implant cases only. Regarding the risk of failure in installing dental implants by dentists, legal remedies that can be taken by patients for losses experienced are by way of a civil suit to the local district court on the basis of liability for losses due to unlawful acts

Increasing the efficiency of osseointegration in dental implantation in patients with diabetic osteopathy by remodeling bone tissue and intensifying its density.

The purpose of the study was to increase the effectiveness of osseointegration of implants in dental implantation in patients with rapidly progressing generalized periodontitis combined with diabetic osteopathy by restoring normal remodeling of bone tissue and intensifying its density. The study included 84 patients aged 30 to 50 years (average 41.9±2.36 years) with type 2 diabetes mellitus associated with generalized periodontitis, among them 56 women and 28 men and 19 volunteer donors without periodontal and detected somatic pathology, identical by gender and age. Surgical intervention for the installation of dental implants was performed in 3 groups of patients identical by gender and age: I, II and III groups. Groups I and II included 52 patients (26 patients in each) with rapidly progressing generalized periodontitis, with type 2 diabetes, complicated by systemic osteoporosis, who differed only in the prescribed treatment complex. Group III was formed by patients with a similar pathology of periodontal tissues, but without background diabetic osteopathy (32 patients), who received an identical treatment complex with patients in Group II. During the surgical intervention, 282 dental implants were installed: 92 implants in group I patients, 89 implants in group II, and 101 dental implants in group III. At the same time, we strove to ensure that the percentage of the performed operations was approximately the same. The analysis of the obtained data of laboratory studies showed that in patients with diabetic osteopathy with rapidly progressing periodontitis and rapidly progressing generalized periodontitis without background pathology, a deeper imbalance of the processes of bone remodeling with high level of both – bone resorption and osteogenesis is observed, which causes acceleration of the destruction of periodontal bone tissue and their loss. At the same time, it was found that with a complex and correct selection of antiresorptive therapy, the level of markers of bone metabolism approaches the norm, which is positively reflected in the dynamics and frequency of osseointegration of dental implants. Our research and received data from laboratory studies showed that in patients with rapidly progressing generalized periodontitis with and without diabetic osteopathy, there is an inhomogeneity and imbalance in the functioning of bone remodeling, which negatively affects the process of osseointegration of dental implants and requires a complex approach in the selection of antiresorptive therapy. Inclusion in the protocol of dental implantation of recombinant morphogenetic protein in patients with diabetes with osteopathology leads to completion of osseointegration of dental implants in the term up to 3 months, and monotherapy with ossein-hydroxyapatite complex in patients with rapidly progressing generalized periodontitis has a similar effect on the osseointegration process – it accelerates the recovery of bone tissue around dental implants.

Исследование архитектоники полости рта у пациентов стоматологического профиля

INTRODUCTION: The issue of restoration of the architectonics of the palatine arch remains relevant both due to the widespread use of removable dentures of different design in everyday practice of dentists of private and governmental medical and prophylactic institutions of dental profile, and due to the development of modern techniques and approaches to the total rehabilitation of patients through use of non-replaceable structures with support on dental implants. All these interventions are associated with derangement of the anatomical structure of the front third of the palatine arch either in result of spanning of it with structural elements of dentures, or in result of reduction of bone tissue to achieve the required width for installation of dental implants. AIM: To study architectonics of the hard palate, alveolar process of the upper jaw and the volume of the moth cavity in patients with intact (sanitated) dentitions and with pathologies. MATERIALS AND METHODS: The study involved patients with intact dentitions and with dental pathologies. In the course of the work, morphometric parameters were studied, namely silicon keys taken from the models of the patients. Separation was performed perpendicular to the palatine seam along the teeth, and the degree of tilt was determined on millimeter paper. There were also studied lateral teleroentgenograms of patients obtained in the course of treatment. The volume of the oral cavity was evaluated by measuring the mean value of two height dimensions, two width dimensions, and the distance from the angle of the mandible to the middle of the chin by the method described in RU 2448646 C2 patent of 27/04/2012. RESULTS: The obtained results of morphometric studies in patients with healthy dentitions show variations in the mean angle of tilt of the hard palate in various sections 69 ± 1.2 degrees in male patients, 76 ± 2.4 in female patients, and the maximum angle of tilt of the hard palate in various sections 74 ± 5.2 degrees in male patients, 83 ± 4.4 in female patients. During the analysis of models in patients with secondary adentia, the data were obtained that permit to get an idea about the influence of atrophic processes of the bone-periodontal complex on changes in the architectonics of the oral cavity in general and in the morphometric parameters of the upper jaw in particular. The study of the data obtained in radiation diagnostics evidences the influence of atrophic processes on the parameters of the volume of the oral cavity of patients. CONCLUSIONS: The obtained results show the influence of atrophic processes on the parameters of the volume of the oral cavity of patients; thus, with increase in the number of missing teeth and increase in the volume of bone tissue lost in atrophic processes, and with its densification, the volume of the mouth cavity of the patient increases. All this produces a negative influence of the thickness of orthopedic structures, increases the period of adaptation of a patients to manufactured dentures; however, the loads exerted on the denture in chewing, can lead to a fracture of denture of sufficient thickness if it has construction errors.

Identification of research gaps and systematization of trends on surface treatment in dental implants based on indexed data in the Scopus database

The installation of dental implants brings significant improvements in patient's quality of life, causing the demand for these procedures to increase. This growth results from the increasing use of innovative technologies in oral care. Since the 1970s, dental implants have continuously evolved, both in terms of shape and surface treatments. This evolution aims to improve osseointegration, an essential process for implant success, and prevent complications such as peri-implantitis. A necessary part of this evolutionary process is surface treatment on dental implants. This treatment improves implant surfaces' physical and chemical properties, promoting a more efficient interaction between the implant and surrounding tissues. To achieve this goal, modifications are made to the texture, composition, and characteristics of the implant surface. In this context, this study aims to identify the research gaps related to surface treatment on dental implants. To this end, a literature review was performed in the Scopus database using specific search terms related to this topic. The 20 most cited articles from 2017 to 2023, which address the main research trends in this area, were selected for analysis. The theoretical contribution of this study is to systematize the current research trends on the surface treatment of dental implants. This provides a better understanding of existing treatments and their limitations and presents ongoing studies that aim to overcome them. Furthermore, the research highlights studies under development, both in vitro and in vivo, that seek to apply scientific advances in clinical practice to improve implant outcomes. This applied contribution is relevant, as it can positively impact clinical practice and benefit patients.

From Synthesis to Clinical Trial: Novel Bioinductive Calcium Deficient HA/β-TCP Bone Grafting Nanomaterial.

Maxillary sinus augmentation is a commonly used procedure for the placement of dental implants. However, the use of natural and synthetic materials in this procedure has resulted in postoperative complications ranging from 12% to 38%. To address this issue, we developed a novel calcium deficient HA/β-TCP bone grafting nanomaterial using a two-step synthesis method with appropriate structural and chemical parameters for sinus lifting applications. We demonstrated that our nanomaterial exhibits high biocompatibility, enhances cell proliferation, and stimulates collagen expression. Furthermore, the degradation of β-TCP in our nanomaterial promotes blood clot formation, which supports cell aggregation and new bone growth. In a clinical trial involving eight cases, we observed the formation of compact bone tissue 8 months after the operation, allowing for the successful installation of dental implants without any early postoperative complications. Our results suggest that our novel bone grafting nanomaterial has the potential to improve the success rate of maxillary sinus augmentation procedures.

Implant therapy in a higher education institution: changes or paradigms?

Since the 1970, dental rehabilitation of partially or totally edentulous patients has been an increasingly used practice, due to improved materials and methods and high rates of survival and success. Objective: This study aimed to evaluate patients from the Faculty of Dentistry of the University of Passo Fundo, between 2015 and 2018, with indication and installation of dental implants. Material and methods: Data on age and gender of the patients, indication and region of the implants, technique, type of connection and shape of the implants, bone density, need for grafting and image modality used for surgical planning were collected from dentistry records. Results: In total, 55 patients and 105 implants were evaluated. The age group ranged from 21 to 82 years, and women were the majority group (64%). Among the implant indications, 71% of the patients had only one tooth missing, and the lower first molars comprised most of the implants performed (21%). The conventional surgical technique was the most used (86%), as well as the cylindrical shape cone morse model. Conclusion: The proper selection of indications for implants seeks to be based on scientific evidence, and the protocols are essential to achieve high success rates.

КЛИНИЧЕСКИЙ СЛУЧАЙ: ХИРУРГИЧЕСКАЯ РЕАБИЛИТАЦИЯ ПАЦИЕНТА ПОСЛЕ ВЗРЫВА ЭЛЕКТРОННОЙ СИГАРЕТЫ

We have carried out the rehabilitation of a patient after a traumatic injury to the maxillofacial region resulting from the explosion of an electronic cigarette. The patient was treated in the Department of Maxillofacial Surgery of the Republican Children's Clinical Hospital in Ufa. A 16-year-old boy was delivered by an ambulance to the emergency department of the Republican Children's Clinical Hospital in Ufa 30 minutes after the injury. The child was hospitalized in the department of maxillofacial surgery. At stage I, primary surgical treatment was performed, reposition of the free-lying fragment of the upper jaw in the frontal section and fixation of the mucosa of the alveolar process of the upper jaw in the region of 1.3 and 2.4 teeth with vicryl 2.0. The mucosa was mobilized along the transitional fold of the upper jaw in the anterior region, placed in the region of the defect in the upper jaw, and sutured with a 5-0 Vicryl thread. After 6 months, the patient enters the II stage of surgical treatment. The cortical plates were placed in the area of the defect and fixed with titanium screws. After another 6 months, the child enters the III stage of surgical treatment - the removal of titanium screws, the installation of dental implants. Stage IV. Installation of temporary crowns of teeth. 
 As a result of smoking a vape, a teenager received severe traumatic stress. Stage IV of complex surgical treatment was carried out. There are stages of implant prosthetics, which is quite expensive for the patient, since this treatment is not included in the List of State Guarantees. Undoubtedly, vape smoking is a very cost-effective procedure, and very harmful to health in general.

Problems of adaptation of primary prosthetic patients with complete absence of teeth to removable plate prostheses

The prevalence of total tooth loss has not decreased over the past decade. This is one of the most common pathologies, especially among the elderly. The restoration of the functions of chewing, aesthetics and speech in the complete absence of teeth is one of the most important tasks of modern dentistry. For the treatment of complete absence of teeth, removable plate prostheses are mainly used. The problem of adaptation of patients to them remains unresolved in the treatment of removable plate prostheses. There are many different approaches to improving the adaptation of patients with complete absence of teeth to removable plate prostheses: the installation of dental implants, the use of adhesive drugs, the use of local ozone therapy of the oral mucosa, the use of new structural materials. However, all these methods do not allow us to solve the fully existing problem of adaptation. In addition, the use of adhesive drugs can cause allergies in patients. It is not always possible to install implants and perform local ozone therapy, and expensive equipment is also necessary. An analysis of the scientific literature conducted in the article on the problems of adapting patients to orthopedic dental treatment with removable plate prostheses showed that among the methods of non-drug effects on these processes, the use of biological feedback methods may be preferable, which helps to reduce the adaptation period by stimulating the human bodys own reserves.

Features of trophic processes occurring in the bone tissue after the operation of dental implantation

Relevance: A key aspect of success after dental implant surgery is obtaining reliable osseointegration of the installed dental implant. In modern literary sources, the problem of consistency of osseointegration after the installation of dental implants is quite often touched upon. A number of authors argue that the quality of osseointegration of a dental implant depends primarily on its primary stability. Long-term studies show that bone tissue permanently undergoes various resorption and recovery processes [1, 2]. Purpose to determine the effectiveness of alkaline phosphatase and collagen protein osteocalcin in oral fluid after dental implantation. Materials and methods: Clinical studies were carried out on the basis of the Clinics of the Samara State Medical University of the Ministry of Health of Russia. A total of 240 patients with a diagnosis of partial absence of teeth were operated on. All patients received dental implants. The median age was 44.2 years (24 to 62 years; 182 women and 58 men). Results and discussion: At the stage of orthopedic rehabilitation, most patients had a low index of oral hygiene, OHI-S averaged (2.63 0.27) c.u. All patients suffering from poor oral hygiene were recommended professional hygiene with the removal of soft and hard dental deposits. At the stage of dental implantation, the OHI-S and Mulleman index was (0.66 0.03) and (0.49 0.03) c.u. respectively. Conclusions: The results of the study showed that the increase in the titer of alkaline phosphatase and the collagen protein osteocalcin was statistically insignificant. The level of acid phosphatase titer in the oral fluid reaches its critical value two weeks after the dental implantation operation. Studies have shown that this indicator remains active up to six months after surgery. This indicator can be used to interpret various emerging trophic processes occurring in bone tissue after dental implantation.

A New Simplified Autogenous Sinus Lift Technique.

Oral maxillofacial rehabilitation of the atrophic maxilla with or without pneumatization of the maxillary sinuses routinely presents limited bone availability. This indicates the need for vertical and horizontal bone augmentation. The standard and most used technique is maxillary sinus augmentation using distinct techniques. These techniques may or may not rupture the sinus membrane. Rupture of the sinus membrane increases the risk of acute or chronic contamination of the graft, implant, and maxillary sinus. The surgical procedure for maxillary sinus autograft involves two stages: removal of the autograft and preparation of the bone site for the graft. A third stage is often added to place the osseointegrated implants. This is because it was not possible to do this at the same time as the graft surgery. A new bioactive kinetic screw (BKS) bone implant model is presented that simplifies and effectively performs autogenous grafting, sinus augmentation, and implant fixation in a single step. In the absence of a minimum vertical bone height of 4 mm in the region to be implanted, an additional surgical procedure is performed to harvest bone from the retro-molar trigone region of the mandible to provide additional bone. The feasibility and simplicity of the proposed technique were demonstrated in experimental studies in synthetic maxillary bone and sinus. A digital torque meter was used to measure MIT and MRT during implant insertion and removal. The amount of bone graft was determined by weighing the bone material collected by the new BKS implant. The technique proposed here demonstrated the benefits and limitations of the new BKS implant for maxillary sinus augmentation and installation of dental implants simultaneously.

Osteonecrosis associated with bisphosphonates and its relationship with dental implants - literature review

Bisphosphonates are drugs used to treat diseases such as osteoporosis, Paget's disease, and bone metabolism changes that might be associated with neoplasms. These drugs have some side effects, one of them is a new complication of great interest to the dental class, namely, osteonecrosis of the jaws associated with bisphosphonates (OAB). How bisphosphonates develop such a disease is still unknown. However, the type of bisphosphonate, the treatment duration and the route of administration may have a direct relationship with the occurrence of OAB. Due to the care required by patients who use bisphosphonates and the risk of developing osteonecrosis after implant surgery, this study aims to conduct a literature review about the context of bisphosphonates in implant dentistry, as well as their mechanism of action and most common complications. As this is a recently discovered disease, there is still no consensus on the installation of dental implants in patients who have taken or are taking bisphosphonates, therefore, communication between the dental surgeon and the patient's physician is vital, so that all preventive measures are taken always aiming at the patient's well-being.

Clinical, Radiographic, and Histological Evaluation of the Mineralized Plasmatic Matrix/Xenograft Mixture in Maxillary Sinus Floor Augmentation (A Randomized Controlled Clinical Trial)

Introduction: Maxillary sinus pneumatization and alveolar ridge resorption following the extraction of posterior teeth make the installation of dental implants in the maxillary posterior region challenging. The direct sinus lift procedure proved to be a viable treatment option for such conditions. Aim of the study: to evaluate the mineralized plasmatic matrix/xenograft mixture in sinus elevation surgery. Materials and Methods: Eighteen patients were selected and randomly allocated into two groups; study group received a mineralized plasmatic matrix/xenograft mixture, while the control group received xenograft alone following sinus lifting. Results: The early wound healing index score showed a non-significant difference between both groups. Also, bone height was evaluated at the 6-month follow-up period, and there was a non-statistically significant difference. Core biopsies were taken for histological examination by H&E from both groups, revealing the presence of a more mature bone matrix in relation to the test group. Conclusion: The addition of mineralized plasmatic matrix to xenograft can speed up bone formation, thus reducing treatment duration.