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1.
Int J Comput Dent ; 23(1): 73-82, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32207463

RESUMEN

BACKGROUND: Accurate implant placement in the bone is key to successful implant treatment. Once inserted, it can be difficult to correct the orientation of the implant axis, especially of a one-piece implant. Prosthetic-driven digital implant planning in combination with fully guided implant surgery can offer additional safety in such cases. CASE PRESENTATION: The patient presented with a wide, edentulous interdental space extending from sites 13 to 16, which was to be restored with three one-piece zirconia implants supporting a zirconia fixed partial denture comprizing a cantilever to the mesial aspect. Digital planning based on DICOM (Digital Imaging and Communications in Medicine) and intraoral surface data was performed to ensure optimal positioning. Guided implant placement was executed using a contra-angle handpiece with special attachments and a compatible, sleeveless drill guide. Impressions of the implants for the final restoration were acquired using an intraoral scanner. Reflection-related errors were compensated for by using the given digital abutment geometry. The DICOM and STL datasets were superimposed and used as the basis for fabricating a monolithic zirconia restoration through a subtractive milling process. The final restoration was adhesively cemented. CONCLUSIONS: By using a prosthetic-driven implant planning strategy, it was possible to place the one-piece ceramic implants without an available implant manufacturer's guide-based solution. This was accomplished using a contra-angle surgical handpiece with special attachments and a compatible drill guide. This approach is particularly recommended for the placement of one-piece implants, which otherwise require irreversible abutment grinding for the adjustment of the implant axis orientation after placement. To increase the precision of the digital impressions of the implants, the ideal abutment geometry was imported and superimposed onto the scan data. The results demonstrate that the proposed method can dispense with the need for gingival retraction when acquiring impressions for implants of this type in the future.


Asunto(s)
Implantes Dentales , Flujo de Trabajo , Cerámica , Diseño Asistido por Computador , Dentadura Parcial Fija , Humanos
2.
Artículo en Inglés | MEDLINE | ID: mdl-32186285

RESUMEN

PURPOSE: To assess the technical and biological complications of screw- and cement-retained implant-supported full-arch dental prostheses. MATERIALS AND METHODS: An electronic search was conducted on Medline/PubMed and Cochrane databases in February 2019; irrespective of any time restrictions using MeSH terms. All studies were first reviewed by abstract and subsequently by full-text reading. Further hand search was performed to identify other related references. Articles only related to cement-retained and/or screw-retained reconstructions in full-arch fixed dental prostheses (FDP) were included. RESULTS: The initial literature search resulted in 3670 papers. 3478 articles remained after removing duplicate articles, and 3439 articles were further excluded by the reviewers after the abstract screening, which resulted in a selection of 39 studies. 12 studies were further excluded due to not fulfilling the inclusion criteria. Hand searching resulted in two additional papers being included, and finally, 29 articles were included in this review. Screw-retained full-arch fixed dental prostheses have fewer complications than cemented reconstructions. Biological complications such as marginal bone loss > 2 mm occurred more frequently in cemented reconstructions, and technical complications such as screw-loosening and screw fracture occurred more in screw-retained reconstructions. CONCLUSION: Cemented reconstructions exhibited more biological complications (implant loss, bone loss > 2 mm) and screw-retained prostheses exhibited more technical problems. Clinical outcomes were influenced by both fixations in different ways. The screw-retained restorations were more easily retrievable than cemented ones, therefore, technical and eventually biological complications could be treated more easily. For this reason, and for their higher biological compatibility, these reconstructions are preferable.


Asunto(s)
Implantes Dentales , Retención de Prótesis Dentales , Tornillos Óseos , Cementación , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental
3.
Artículo en Inglés | MEDLINE | ID: mdl-32186286

RESUMEN

PURPOSE: To compare the clinical and radiographic outcomes of platform switching (PS) and regular platform (RP) implants. MATERIALS AND METHODS: This study was designed as a randomised controlled split-mouth trial. Eighteen patients, with bilaterally missing single premolars or molars to be restored with implant-supported single crowns, were consecutively enrolled. Implant sites were randomly assigned to be treated according to the PS concept (PS group), or with matching implant-abutment diameters (RP group). A total of 36 implants were placed in healed bone, with an insertion torque between 35 and 45 Ncm, according to a one-stage protocol. All the implants were loaded with a screw-retained provisional crown 3 months after implant insertion. Definitive screw-retained single crowns were delivered 2 months later. Outcome measures were implant and prosthetic survival rates, biological and prosthetic complications, marginal bone level (MBL) changes, pocket probing depth (PPD) and bleeding on probing (BOP). Clinical data were collected at implant placement (baseline), implant loading (3 months later) and at 9, 36 and 60 months after loading. RESULTS: One patient dropped out after 4 years of follow-up. No implant failed and no prosthetic complications were recorded during the study period. One patient experienced mucosal inflammation with positive BOP (RP group) after 3 months and three patients had bilateral peri-implant mucosal inflammation with positive BOP at 6, 24 and 36 months, respectively. No other biological complications were recorded up to 60 months of follow-up. There were no statistically significant differences between groups for complications (3/18 versus 4/18; P = 1.0). Nine months after loading the mean MBL was 0.93 ± 0.26 mm (95% CI 0.81 to 1.05) for RP implants and 0.84 ± 0.23 mm (95% CI 0.73 to 0.95) for PS implants. No statistically significant difference was observed between the groups (P = 0.18). Thirty-six months after loading, the mean MBL was 1.09 ± 0.31 mm (95% CI 0.95 to 1.24) in the RP group and 1.06 ± 0.24 mm (95% CI 0.94 to 1.17) in the PS group, with no statistically significant difference between groups (P = 0.70). Sixty months after loading the mean MBL was 1.24 ± 0.39 mm (95% CI 1.05 to 1.43) in the RP group and 1.20 ± 0.21 mm (95% CI 1.01 to 1.39) in the PS group, with no statistically significant difference between the groups (P = 0.85). The mean PPD was 2.58 ± 0.58 mm (95% CI 2.32 to 2.84) in the RP group and 2.40 ± 0.72 mm (95% CI 2.21 to 2.59) in the PS group at 60 months follow-up, with no statistically significant difference between the groups (P = 0.49). The mean BOP was 0.90 ± 0.88 (95% CI 0.58 to 1.22) in the RP group and 0.93 ± 0.97 (95% CI 0.51 to 1.35) in the PS group at 60 months of follow-up, with no statistically significant difference between the groups (P = 0.85). CONCLUSIONS: Implants restored according to the PS concept and matching implant-abutment diameters showed comparable clinical and radiographic results up to 5 years after loading.


Asunto(s)
Implantes Dentales , Carga Inmediata del Implante Dental , Diente Premolar , Coronas , Humanos , Torque
4.
Artículo en Inglés | MEDLINE | ID: mdl-32186287

RESUMEN

PURPOSE: The aim of this study was to identify factors associated with failure of maxillary and mandibular dental implants before permanent crown placement. MATERIALS AND METHODS: The present study included adults who underwent dental implantation between January 2003 and December 2016. Implant failure before the permanent prosthesis placement was defined as early implant failure. Patients were divided retrospectively into groups according to the status of their implants; ie, a group with no early implant failure and a group with at least one early failure. Patient-related and implant site-related factors were analysed. RESULTS: 18 (4.8%) of the 376 patients had at least one implant that failed early. 49 (4.7%) of the 1,050 implants included in the study failed early. After adjustment, significant risk factors associated with early failure of maxillary implants included age, bone regeneration for insufficient bone, and signs of postoperative infection. In the mandibular implants, the only significant risk factor for early failure after adjustment was postoperative infection signs. CONCLUSIONS: The risk factors associated with early implant failure differed between the maxilla and mandible. Early failure was more attributed to these causes than to a difference in morphology or bone quality between the maxilla and mandible. Prospective studies focusing on the interaction between these risk factors are needed.


Asunto(s)
Aumento de la Cresta Alveolar , Implantes Dentales , Adulto , Implantación Dental Endoósea , Diseño de Prótesis Dental , Fracaso de la Restauración Dental , Humanos , Mandíbula , Maxilar , Estudios Prospectivos , Estudios Retrospectivos , Factores de Riesgo
5.
Artículo en Inglés | MEDLINE | ID: mdl-32186288

RESUMEN

PURPOSE: To explore risk indicators potentially associated with early apical peri-implantitis (EAP). MATERIALS AND METHODS: A retrospective survey was performed in 2017 with recorded information from patients receiving dental implants between 1996 and 2016. Reporting follows the STROBE (strengthening the reporting of observational studies in epidemiology) guidelines. Data were collected from the medical histories and radiographs: diagnosis of EAP (health/disease), gender, age, type of surgery (immediate/delayed placement), implants placed (position, width, length, location, mesial and distal tooth-implant distance measured at the apex, state of the adjacent tooth and tooth being replaced, and surgical complications. Once the EAP had developed, data were collected regarding days of evolution, symptoms, signs and radiological findings. RESULTS: A total of 2548 patients (57.1% females and 42.9% males) with 8110 implants were enrolled in the study. 46 patients with 58 implants were diagnosed with EAP - 23 in the maxilla (39.6%) and 35 in the mandible (60.4%) - between 6 and 50 days after implant placement, with a mean period of 21.7 days (SD 10.1). The frequency of EAP was 1.81% in patients and 0.71% in implants. Immediate placement multiplied the odds of developing EAP 21-fold (95% CI 6.74 to 65.7; P < 0.001) versus delayed placement. The existence of an apical lesion in the tooth being replaced multiplied the odds of developing EAP 26.3-fold (95% CI 4.24 to 162.8; P < 0.001). Replacing a tooth endodontically treated increased the odds 3.48 times (95% CI 0.99 to 12.3; P = 0.052). The presence of an adjacent endodontically treated tooth increased the odds 0.97-fold (95% CI 0.26 to 3.60; P = 0.963). An apical mesial distance of ≤ 1.5 mm increased the odds up to 5.12-fold (95% CI 2.12 to 12.4; P < 0.001). CONCLUSIONS: The presence of endodontic periapical lesions or endodontic treatment in the tooth being replaced, immediate implant placement or mesial tooth-implant distance measured at the apex were significantly associated with increased odds of EAP.


Asunto(s)
Implantes Dentales , Periimplantitis , Femenino , Humanos , Masculino , Mandíbula , Maxilar , Estudios Retrospectivos
7.
Braz Dent J ; 31(1): 63-68, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32159708

RESUMEN

The present study evaluated polymorphisms in RANK, RANKL and OPG-encoding genes to assess whether they are associated with mucositis and peri-implantitis in a population from the Brazilian Amazon region. One hundred and fourteen patients with dental implants were included in the study. After clinical and radiographic examination, the sample was categorized into 4 groups, according to the peri-implant status: Healthy (n=71), Mucositis (n=30), Peri-implantitis (n=13) and Diseased (Mucositis + Peri-implantitis, n=43). Genomic DNA was extracted from buccal cells from saliva, and the genetic polymorphism in osteoprotegerin (OPG), Kappa nuclear factor activator receptor (RANKL) and nuclear kappa factor activator receptor (RANK) were genotyped by the real time PCR. Univariate and multivariate statistical analyses were performed to compare clinical variables among groups and to evaluate genotypes and alleles distributions and the established alpha was 5%. Age, peri-implant biotype, diabetes and presence of peri-implant biofilm were associated with mucositis (p<0.05) and peri-implantitis (p<0.05). Smoking, alcoholism, and periodontal biofilms were also associated with the presence of peri-implantitis (p<0.05). Univariate and multivariate analysis did not demonstrate an association of peri-implantitis or mucositis with any genetic polymorphism in RANK (rs3826620), RANKL (rs9594738) and OPG (rs2073618) (p>0.05). The studied genetic polymorphism in RANK, RANKL and OPG were not associated with mucositis and peri-implantitis in a Brazilian population from the Amazon region.


Asunto(s)
Implantes Dentales , Periimplantitis , Brasil , Humanos , Mucosa Bucal , Osteoprotegerina , Polimorfismo Genético
8.
J Dent Educ ; 84(3): 301-307, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32176341

RESUMEN

Historically, predoctoral and advanced dental education programs used two-dimensional panoramic and periapical radiographs for implant planning. Three-dimensional (3D) Cone Beam Computed Tomography (CBCT) imaging has improved visualization of anatomic structures that can positively influence implant planning and surgical implant placement. The aim of this study was to assess how U.S. postdoctoral periodontics programs have incorporated CBCT technology into their curricula. A ten-question survey was sent to all 57 U.S. postdoctoral periodontics programs in November-December 2018. Thirty-seven responses were received, for a 65% response rate. All participating programs reported providing residents access to CBCT machines, and most of their residents received some training in the acquisition and interpretation of CBCT images. Nearly all (95%) participating programs provided training to apply implant planning software. Among the participating programs, 14% reported using a surgical guide fabricated with a CBCT scan 76-100% of the time, and 60% reported obtaining a CBCT scan for implant cases 76-100% of the time. These results suggest that, while residents are receiving training in CBCT and implant planning, it is not used often. There may be merit in adopting the American Academy of Oral and Maxillofacial Radiology's recommendation to use 3D imaging for all implant planning, with CBCT as the imaging modality of choice.


Asunto(s)
Implantes Dentales , Tomografía Computarizada de Haz Cónico Espiral , Tomografía Computarizada de Haz Cónico , Educación en Odontología , Humanos , Imagen Tridimensional , Periodoncia , Encuestas y Cuestionarios
9.
Compend Contin Educ Dent ; 41(3): e1-e9, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32125165

RESUMEN

More than 2,000 dental implant options are estimated to be available for any given clinical situation. Because many implants have claims that are substantiated mainly on the basis of in vitro studies, it is prudent for clinicians to understand the interpretation of such studies and possible clinical relevance. In vitro tests can be segregated as surface analysis tests and mechanical assessment tests. With a wide variation of methodologies used and results achieved by different implant manufacturers, practitioners may find it difficult to judge the clinical significance of in vitro tests. This article provides an overview, including limitations, of the in vitro implant analysis tests implant companies routinely perform, ranging from older methods involving mechanical testing and surface microscopy to more recent tests such as atomic force microscopy (AFM) studies and gene expression tests, to assist clinicians when choosing an implant system. Having identified the limitations of in vitro testing methods, the current evidence indicates that scanning electron microscopy may be useful in providing insight on the role of implant surface topography. AFM, single cell tests, 3D imaging, and gene expression tests could be useful for assessment of cellular and physio-biochemical properties. 3D finite element analysis may help in the evaluation of mechanical properties of dental implants. Clinicians are encouraged to correlate the findings of in vitro tests with robust animal histologic studies and well-designed, high-quality clinical research to ascertain optimum clinical results.


Asunto(s)
Implantes Dentales , Animales , Técnicas In Vitro , Microscopía Electrónica de Rastreo , Propiedades de Superficie , Titanio
11.
Stomatologiia (Mosk) ; 99(1): 38-42, 2020.
Artículo en Ruso | MEDLINE | ID: mdl-32125300

RESUMEN

AIM: To evaluate the effectiveness of the innovative concept of dental medical technologies in patients with resected (amputated) roots of teeth with and without periodontal diseases. MATERIAL AND METHODS: Of the 516 examined patients with periapical destructive foci of infection of various genesis, 4 clinical groups of 24 people were randomly formed: (1) with a diagnosis of apical periodontitis of incisors, canines or premolars with individual milled transdental implants made of zirconium dioxide; (2) patients with a similar diagnosis and concomitant periodontitis of moderate severity with the same implants; (3) patients with periapical destructive process of molars without periodontitis with the same implants. Control group (4) included patients with similar diagnoses with resection of the root apex without implantation. Patients of the study groups were operated in accordance with the developed clinical protocols, including the manufacture and installation of individual transdental implants with fixation in the postoperative period, developed within the framework of tooth-preserving technologies of immobilizing structures. RESULTS: The reinforcement of teeth with resected roots with transdental implants together with immobilization of these teeth in the postoperative period restores the biomechanical characteristics of the tooth 2.7 times more effectively. However, there is a slight change in the mobility of the operated teeth in an earlier period (after 3 months), which is associated with the resorption of the bone-replacing agent used to fill the intraoperative defect and with the defective formation of bone tissue. The values of peritelomeric 6 months after the operation differ from the control by 1.4 units only.


Asunto(s)
Implantes Dentales , Periodontitis Periapical , Periodontitis , Humanos , Diente
12.
Compend Contin Educ Dent ; 41(3): 156-163, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32125168

RESUMEN

The anatomic proximity of the maxillary sinus to the apices of molar and premolar teeth is a significant factor when considering implant therapy to replace maxillary posterior teeth. An emerging field within tissue engineering is the application of xenografts capable of stimulating de novo bone regeneration. This article presents a technique using a crestal approach to sinus grafting utilizing a novel bone graft material composed of porcine, ribose cross-linked collagen seeded with a nanocrystalline hydroxyapatite mineral. This highly cohesive biomaterial is able to minimize graft migration, which is particularly important in case of undetected Schneiderian membrane perforations. The material also has been demonstrated in animal studies to be capable of osteoconduction, resulting in increased bone volume in ridge augmentation procedures.


Asunto(s)
Implantes Dentales , Elevación del Piso del Seno Maxilar , Animales , Trasplante Óseo , Colágeno , Implantación Dental Endoósea , Humanos , Seno Maxilar , Ribosa , Porcinos
13.
Prim Dent J ; 8(4): 54-61, 2020 Jan 29.
Artículo en Inglés | MEDLINE | ID: mdl-32127095

RESUMEN

This article provides a narrative review of the use of dental implants in patients with periodontitis. using clinical examples where possible, consideration is given to the survival and success of implants, peri-implantitis, comparison of periodontally compromised teeth to implants and to treatment planning to help achieve favourable outcomes.
The challenges associated with restoring an edentulous arch or partially dentate dentition with implants where significant alveolar atrophy has occurred can be considerable. Compromised outcomes may be commonplace.
Dental implant treatment is more likely to be successful for those patients who attain and maintain excellent plaque control. Professional support should focus on managing underlying periodontitis prior to commencing implant therapy and providing long term, regular supportive periodontal care upon completion of treatment.


Asunto(s)
Pérdida de Hueso Alveolar , Implantes Dentales , Arcada Parcialmente Edéntula , Periimplantitis , Periodontitis , Fracaso de la Restauración Dental , Humanos , Estudios Prospectivos
14.
J Prosthodont ; 29(3): 272-276, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32020699

RESUMEN

This technique report describes a fully digital workflow in which two surgical guides (i.e. one for alveolar bone reduction and the other for implant placement) are magnetically connected to ensure stability during full-arch implant surgery following guided bone reduction. Digital prosthesis design as well as virtual bone reduction and implant planning are developed from the superimposition of facial, intraoral and CBCT scans. With this technique, different surgical guides and interim poly(methylmethacrylate) (PMMA) fixed prosthesis are precisely connected with magnets after being digitally designed and 3D-printed. As a result, such magnetic connection allows for satisfactory stability of the implant surgical guide, as well as of the interim fixed PMMA fixed prosthesis during capture of screw-retained abutments.


Asunto(s)
Implantes Dentales , Cirugía Asistida por Computador , Proceso Alveolar , Diseño Asistido por Computador , Implantación Dental Endoósea , Prótesis Dental de Soporte Implantado , Impresión Tridimensional , Flujo de Trabajo
15.
J Biol Regul Homeost Agents ; 34(1 Suppl. 1): 63-69, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32064837

RESUMEN

Two conditions are necessary for a correct and functional prosthetic implant rehabilitation: maintaining pre-implant soft tissue health and stability of bone tissue, in terms of implant osseous-integration and maintenance of optimal crestal attachment levels. In addition to these parameters - necessary for the longevity of the restoration - one of the main aspects of therapy is the achievement of a final aesthetic that reproduces as faithfully as possible the natural anatomy of the lost tooth and the associated soft tissues. To achieve this last objective, an implant system was designed and used by our group. This implant is characterized by a convergent trans-mucosal emergence fixture associated with a progressive closing system of trans-mucosa healing pillars (healing abutment). This guarantee, together with the micro and macrostructure of the implant, an immediate and highly aesthetic condition of the peri-implant soft tissues, and in the same time an optimal seal on the convergent neck of the implant itself.


Asunto(s)
Pilares Dentales , Implantes Dentales , Estética Dental , Humanos
16.
J Biol Regul Homeost Agents ; 34(1 Suppl. 1): 71-77, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32064838

RESUMEN

This article presents a case report of transmucosal implant with a convergent collar (PRAMA) inserted in the anterior maxillary esthetic area. The purpose of this study is to evaluate soft and hard tissue after 12 months. One implant was placed in the esthetic area. The implant was immediately loaded with a screwed provisional prosthesis. After 3 months the definitive screwed prosthesis was inserted. The patient was reassessed 12 months post-implant placement, and during the examination, the soft-tissue texture, color, and amount of keratinized tissue was checked. No statistically significant horizontal dimensional changes of the alveolar ridge were observed between each time-point. Mean soft tissue levels significantly improved between base-line and 12 months. The reduced buccal width of the transmucosal component gives more space to the gingival thickness and promotes stability and give a better seal. The use of transmucosal implant creates a shift of the inflammatory cell infiltrate away from the crestal bone level.


Asunto(s)
Proceso Alveolar , Implantes Dentales , Maxilar , Encía , Humanos , Resultado del Tratamiento
17.
J Biol Regul Homeost Agents ; 34(1 Suppl. 1): 89-97, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32064840

RESUMEN

The aim of this review was to collect available evidence and evaluate accuracy outcomes of dental implant impression techniques, and to compare the accuracy of conventional implant impression versus digital implant impression. Inclusion and exclusion criteria were defined by the authors before the start of the study. The inclusion criteria were: all studies published in English language; studies no older than five years; analyzing the accuracy of digital vs conventional technique impression on implants. The exclusion criteria were: publications that reported the same data as later publications by the same authors and systematic reviews; commentaries and letters to the editor; case report and case series. The search resulted in 106 titles. Following the first stage of screening, after the records identification through database manual searching, 112 potentially relevant studies were identified. After the second stage screening, 33 full text publications were obtained and analyzed and 17 were excluded. Afterwards, 18 articles resulted eligible after full text reading and a cross search of the articles' references was accomplished; 3 articles were consequently added. At the end only 7 articles were included in the quantitative analysis. Within the limitations of this systematic review, digital impression on dental implants offers a comparable accuracy compared with conventional impressions technique. More clinical trials are recommended to investigate the accuracy of these scanners and their validity in clinical use.


Asunto(s)
Implantes Dentales , Técnica de Impresión Dental , Procesamiento de Imagen Asistida por Computador , Humanos
18.
J Biol Regul Homeost Agents ; 34(1 Suppl. 1): 115-117, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32064844

RESUMEN

Oral rehabilitation of edentulous maxilla is particularly difficult because of the lack of bone in correspondence of maxillary sinuses, therefore, the surgeon is forced to place implants in sites where bone is more prevalent. In addition, patients require more frequent oral immediate rehabilitation in order to reduce the discomfort related to wearing a total denture. A viable solution to provide stability and retention of the prosthesis in a short time is represented by the technique of intraoral welding supporting total denture or fixed prosthesis. This goal may be achieved thanks to the technique of welding titanium bars onto implant abutments. In fact, the procedure can be performed directly in the mouth, eliminating the possibility of errors or distortions due to prosthetic procedures. This paper describes a case report and the most recent data regarding long-term success and high predictability of intraorally-welded titanium bar in immediate loading implants.


Asunto(s)
Implantes Dentales , Prótesis Dental de Soporte Implantado , Soldadura Dental , Arcada Edéntula , Maxilar/patología , Humanos
19.
J Biol Regul Homeost Agents ; 34(1 Suppl. 1): 125-131, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32064846

RESUMEN

The popularity of one piece implants has increased considerably between patients and dentists. The advantages of one-piece immediate loading for rehabilitation of edentulous mandibles is to reduce the number of interventions and timing of prosthetic. These parameters can be better controlled with a one-piece implant. Twenty-one patients with one-piece implants inserted in totally edentulous mandibles were considered for this retrospective study. Inclusion criteria were: Good oral hygiene, absence of lesions of the oral mucosa, no smoking or smoking less than 20 cigarettes a day, drinking less than 2 glasses of wine a day, good general health no pregnancy. Twenty-one (12 females 9 males) patients were enrolled in this retrospective study. The mean follow-up was 1 years. A total 84 one-piece implants (Biohorizon, Italy) were inserted in edentulous mandible. Implants diameter was 3.0 mm in all fixtures. Implants length was equal and longer than 12 mm in 44 and 40 fixtures respectively. 48 were inserted in females 36 in males (range 33-67; mean age 58.3). One-piece immediate loading implants has no difference in survival rate respect to two-piece implant and delayed loading for rehabilitation of totally edentulous mandibles. In conclusion one-piece immediate loading implant is a reliable device for mandible rehabilitation.


Asunto(s)
Implantes Dentales , Prótesis Dental de Soporte Implantado , Arcada Edéntula , Adulto , Anciano , Femenino , Estudios de Seguimiento , Humanos , Masculino , Mandíbula , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
20.
J Biol Regul Homeost Agents ; 34(1 Suppl. 1): 139-142, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32064848

RESUMEN

Prosthetic rehabilitation of atrophic maxillary implants often requires grafting owing to vertical and transversal bone deficiency. The use of this procedure in order to insert implants was introduced by Tatum and published as a clinical study by Boyne and James. It can be performed via a lateral or crestal approach. This surgery is now widespread, with good results in terms of bone augmentation and implant osseointegration. Nevertheless, there is a small proportion of patients who have infectious complications with an incidence ranging from 3.5% to 10.5%. We observe that maxillary sinus augmentation is a successful preprosthetic technique for augmentation of the edentulous posterior maxilla. Preoperative assessment of the anatomy of the sinus reduces the rate of complications considerably.


Asunto(s)
Implantación Dental Endoósea , Implantes Dentales , Seno Maxilar/cirugía , Trasplante Óseo , Humanos , Maxilar , Seno Maxilar/anatomía & histología , Resultado del Tratamiento
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