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Abstract Currently, there is no consensus on the indications and clinical performance of implant-supported overdentures (IODs) involving computer-aided design and manufacturing (CAD-CAM) bars. Objective: To evaluate the performance of IODs involving CAD-CAM bars. Methodology: A comprehensive search of studies published until May 2023 was conducted in many databases, including PubMed/MEDLINE, Web of Science, Cochrane Library, and SciELO, following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). The population, intervention, comparison, outcome (PICO) question was: "How do IODs retained by bars fabricated by CAD-CAM technology perform in daily clinical practice?" The meta-analysis included clinical studies based on effect size and a two-tailed null test with a 95% confidence interval (CI). Results: Ten studies were included in the meta-analysis. Among them, nine reported a 100% implant survival rate for all CAD-CAM milled bars. Complications were reported in two studies with CAD/CAM-milled titanium bars, and one study reported more fractures in soldered gold bars used in maxillary rehabilitation. However, no fractures were observed in IODs retained by PEEK and zirconia bars. According to six studies, biological complications, including peri-implantitis, were minimal in the BioHPP and PEEK bar groups, while no cases were reported in the titanium or zirconia bar groups. CAD-CAM-milled zirconia bars had higher plaque and bleeding indices compared with titanium bars, as evidenced by findings from five studies. All four studies that evaluated Oral Health Impact Profile (OHIP) scores showed a positive effect of IODs retained by CAD-CAM milled titanium bars on quality of life. Patient satisfaction and acceptance by prosthodontists were significantly high, according to the results of five studies. Conclusion: Overdentures retained with CAD-CAM milled titanium bars show great potential for use in daily clinical practice. Moreover, patient and practitioner satisfaction was very high when this method was used.
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A reabilitação de pacientes parcialmente edêntulos com desgaste dentário severo e dimensão vertical de oclusão reduzida é desafiadora e complexa. Objetivo: Descrever o restabelecimento da dimensão vertical de oclusão e parâmetros estéticos com uma prótese parcial removível do tipo overlay (PPRO) com auxílio de um JIG estético modificado. Relato de caso: Paciente do sexo masculino, 58 anos de idade, procurou serviço odontológico queixando-se de insatisfação com a estética do sorriso e perda dos dentes posteriores. Ao exame clínico, foram observados desgaste dentário excessivo e edentulismo parcial nas arcadas superior e inferior. Então, foi proposto tratamento em 2 etapas (provisória e definitiva) com PPRO em maxila. O JIG estético foi usado como guia de referência para incrementos em resina composta fotopolimerizável e o restabelecimento da dimensão vertical de oclusão foi determinado a partir de métodos métrico, fonético e estético. Os dentes desgastados foram aumentados e os dentes ausentes substituídos por dentes artificiais a partir de uma PPRO provisória. Após 2 meses de adaptação, a reabilitação final com PPRO definitiva foi conduzida baseando-se na reabilitação com a PPRO provisória. Conclusão: O paciente relatou satisfação com a estética e desempenho funcional com o tratamento. Portanto, o JIG estético beneficia o planejamento e o tratamento para restabelecer a dimensão vertical de oclusão. Além disso, a PPRO é uma alternativa reversível, de baixo custo, para reabilitar a estética e a função de pacientes com desgaste severo e perda parcial dos dentes.
The rehabilitation of partially edentulous patients with severe tooth wear and reduced occlusal vertical dimension is challenging and complex. Objective: To describe the reestablishment of occlusal vertical dimension and aesthetic parameters with an overlay re-movable partial denture (ORPD) with the aid of a modified aesthetic JIG. Case report: A 58-year-old man sought dental service complaining of dissatisfaction with the aesthetics of his smile and a loss of posterior teeth. At clinical examination, excessive tooth wear and partially edentulism in the lower and upper arches were observed. A two-step treatment (interim and definitive) with an ORPD in the upper arch was proposed. The aesthetic JIG was used as a reference guide for the increments in light-curing resin composite, and the reestablishmentthe occlusal vertical dimension was determined using aesthetic, phonetic, and metric methods. The worn teeth were increased, and the missing natural teeth were replaced by artificial teeth using a temporary ORPD. After two months of adaptation, de-finitive rehabilitation with a definitive ORPD was performed based on the interim ORPD. Conclusion: The patient reported satisfaction with the esthetic and functional performance of this treatment. Therefore, the aesthetic JIG benefits the planning and treatment of reduced vertical dimension. Moreover, the ORPD is a reversible and lower-cost alternative to rehabilitate the aesthetics and function of patients with severe teeth wear and partial teeth loss.
Subject(s)
Male , Middle Aged , Denture, Partial, Removable/trends , Vertical Dimension , Esthetics, Dental , MalocclusionABSTRACT
Dentures with dental plaque predispose recurrent hyperplasia on the palatal mucosa. Surgical procedures for the treatment of inflammatory papillary hyperplasia involve postsurgical discomfort and morbidity. This repot describes clinical and histologic aspects of a patient with severe akantolitic inflammatory papillary hyperplasia. The palatal mucosa was treated with a surgical bur with a low-speed handpiece. A new removable denture was performed and adapted. A follow-up of 4 years showed staility of health at palatal mucosa. Patient referred low discomfort and morbidity when using bur technique. Control of removable denture was critical for long-term healing and soft tissue stability.
Las prótesis dentales con placa bacteriana predisponen a la hiperplasia recurrente en la mucosa palatina. Los procedimientos quirúrgicos para el tratamiento de la hiperplasia papilar inflamatoria implican molestias y morbilidad posquirúrgicas. Este reporte describe los aspectos clínicos e histológicos de un paciente con hiperplasia papilar inflamatoria acantolítica severa. La mucosa palatina fue tratada con una fresa quirúrgica con una pieza de mano de baja velocidad. Se realizó y adaptó una nueva prótesis parcial removible. Después de un seguimiento de 4 años, se encontró estabilidad de la salud de la mucosa palatina. El paciente se refirió a la baja incomodidad y morbilidad al usar la técnica de la fresa. El control de la prótesis parcial removible fue crítico para la cicatrización a largo plazo y la estabilidad de los tejidos blandos, evitando la recidiva de la hiperplasia papilar inflamatoria.
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Objective@#To compare the biomechanical characteristics of four-implants mandibular overdentures supported by Locator attachment or bar-clip attachment under different mechanical loads using three-dimensional finite element analysis method.@*Methods@#Two different models of four-implants supported mandibular overdentures using Locator attachment and bar-clip attachment (hereinafter called Locator model and bar-clip model) were established. Each model was subjected to five different mechanical loading conditions: 100 N vertical loading in central incisor (vertical load of incisor), 100 N vertical loading or oblique loading in canine (vertical or oblique loads of canines), 100 N vertical or oblique loading in mandibular first molar (vertical or oblique loads of mandibular first molar). The stress distributions in implants, peri-implant bone and mucosa were recorded under the above five conditions to evaluate the effects of different attachments on the biomechanical properties of implant-supported mandibular overdentures.@*Results@#Regardless of loading conditions and types of attachments, the stress concentration in implants were located at the neck of implants, and the stress concentration in peri-implant bone was located in the cortical bone. The stress values in mucosa were always much smaller than those in implants and cortical bone. Regardless of loading positions (on canine or on mandibular first molar), the maximum stress at the bone interface around the implant under lateral loading was much higher than that under vertical loading. Under various loading conditions, the stress in implants and cortical bone of the Locator model (the highest von Mise stress value was respectively 79.5 and 22.3 MPa) were lower than that of bar-clip model (the highest von Mise stress value was 110.3 and 28.7 MPa respectively) while the maximum compressive stress in mucosa (0.198 MPa) in Locator model was slightly higher than that in the bar-clip model (0.137 MPa).@*Conclusions@#In clinical practice, the lateral force applied to the implant-retained overdenture should be minimized to avoid complications caused by pathological loads. Under the same loading condition, the stress distributions in overdenture using Locator attachment are more dispersed, which is more conducive to long-term stability of implants.
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Aim: The aim of this study was to investigate the biomechanical behavior of implant-retained mandibular overdentures using Micro ERA® system with different implant position and angulation by finite element analysis (FEA). Methods: Four 3D finite element models of simplified mandibular overdentures were constructed, using one Bränemark implant with a Micro ERA® attachment. The implant was positioned on the canine or lateral incisor area with an angulation of either 0º (C-0º; LI-0º) or 17º (C-17º, LI-17º) to the vertical axis. A 100 N axial load was applied in one side simultaneously, from first premolar to second molar. In all models it was analyzed the overdenture displacement, compressive/tensile stress in the bone-implant interface, and also the von Mises equivalent stress for the nylon component of the housing. The stresses were obtained (numerically and color-coded) for further comparison among all the groups. Results: The displacement on the overdenture was higher at the posterior surface for all groups, especially in the C-17º group. When comparing the compressive/tensile stress in the bone-implant interface, the lateral-incisor groups (LI-0º and LI-17º) had the highest compressive and lowest tensile stress compared to the canine groups (C-0º and C-17º). The von Mises stress on the nylon component generated higher stress value for the LI-0º among all groups. Conclusions: The inclination and positioning of the implant in mandibular overdenture interferes directly in the stress distribution. The results showed that angulated implants had the highest displacement. While the implants placed in the lateral incisor position presented lower compressive and higher tensile stress respectively. For the attachment the canine groups had the lowest stress
Subject(s)
Dental Implants , Finite Element Analysis , Denture, OverlayABSTRACT
Abstract The aim of this longitudinal observational study was to evaluate the oral health-related quality of life (OHRQoL) following patient rehabilitation with implant-retained mandibular overdentures (IMO) and to identify the contribution of the different domains to OHRQoL. The Oral Health Impact Profile (OHIP-EDENT), Dental Impact on Daily Living (DIDL), and Geriatric Oral Health Assessment Index (GOHAI) questionnaires were completed twice by 25 patients: after 3 months of rehabilitation with complete dentures (CD) and after 3 months of IMO loading using stud abutments. The evaluation after IMO rehabilitation showed significant improvement in three DIDL domains: appearance (p = 0.011), eating and chewing (p = 0.003), and general performance (p = 0.003). The GOHAI results showed significant differences in two domains: psychosocial (p = 0.005) and pain and discomfort (p = 0.0004). The OHIP-EDENT outcomes showed significant improvements in five domains: functional limitation (p = 0.0001), physical pain (p = 0.0002), physical disability (p = 0.0010), and psychological disability and handicap (p = 0.032). The largest observed effect sizes were close to one standard deviation and were observed in the eating and chewing domain (0.93) of the DIDL; the pain and discomfort domain (0.83) of the GOHAI, and the functional limitation (0.89), physical pain (1.02), physical disability (0.84) domains of the OHIP-EDENT. The percentage of satisfied patients increased in all domains. Self-reported OHRQoL of CD wearers was significantly improved after 3 months of treatment with IMO, especially concerning the functional and pain-related aspects.
Subject(s)
Humans , Male , Female , Aged , Quality of Life , Dental Implants , Oral Health , Mandibular Prosthesis , Self Concept , Facial Pain/physiopathology , Activities of Daily Living , Longitudinal Studies , Patient Satisfaction , Statistics, Nonparametric , Denture, Overlay , Denture, Overlay/psychology , Disability Evaluation , Self Report , Mandibular Prosthesis/psychologyABSTRACT
As próteses totais convencionais inferiores são as mais difíceis de adaptar, devido à perda óssea ser maior e consequentemente à baixa estabilidade e pouca retenção. Entretanto, com o aparecimento dos implantes osse-ointegráveis surgiram os tratamentos com próteses do tipo overdenture, as quais oferecem melhor estabilidade e retenção. O objetivo deste trabalho foi comparar os três principais tipos de sistemas de retenção para a pró¬tese overdenture encontrada na literatura. Para isso, foram realizadas pesquisas com os termos "overdenture"; "attachment", "implant-supported", "dental prosthesis", "denture" e "oral rehabilitation" nas bases de dados PubMed, Science Direct e Scielo. Os sistemas barra-clipe e esférico apresentaram semelhanças estatísticas quanto à retenção e estabilidade. Já o sistema magnético apresentou pouca retenção e baixa estabilidade
The conventional lower total prosthesis is the most difficult dental prosthesis to adapt in the patients mouth, due to bone loss be greater in this region, which consequently decreases stability and retention of the prosthe¬sis. However, the appearance of osseointegrated implants gave rise to treatments with overdenture prostheses, which offer better stability and retention to the prostheses. The aim of this study was to compare the three main types of overdenture prosthesis restraint systems found in the literature. For this research, we used the terms: "overdenture"; "attachment", "implant-supported", "dental prosthesis", "denture" and "oral rehabilitation" in the databases of PubMed, Science Direct and Scielo. The clip bar and spherical systems presented statistical similarities regarding retention and stability. Already, the magnetic system presented little retention and low stability
Subject(s)
Mandibular Prosthesis Implantation , Prosthesis Implantation , Denture, Overlay , Denture Precision Attachment , Mouth RehabilitationABSTRACT
Hoje há uma relevante busca por parte dos pacientes por alternativas de tratamentos a fim de melhorar ou alterar a aparência do sorriso. Isso ocorre devido à grande valorização atual por um sorriso com uma estética agradável. No entanto, a busca não está restrita somente aos elementos anteriores. Muitos pacientes demonstram a preocupação em melhorar a estética e a função também dos elementos posteriores. Com base nisso, o objetivo deste trabalho foi relatar um caso clínico sobre reabilitação funcional e estética utilizando lentes de contato, facetas, coroas e overlay de cerâmica(AU)
Currently, there is a search for alternative treatments to improve or change the appearance of the smile by the patients. This occurs due to the currently high appreciation for a smile with a pleasing aesthetic. However, the search is not restricted only to the anterior elements, since many patients show the desire to improve the aesthetics as well as the function of the posterior elements. Based on this, the aim of this study was to presente a case report of functional and esthetic rehabilitation using ceramic veneers, crowns and overlay restorations(AU)
Subject(s)
Humans , Female , Dental Veneers , Esthetics, Dental , Mouth Rehabilitation , Ceramics , Denture, OverlayABSTRACT
Objective To observe the effect of magnetic attachments application on oral denture restoration .Methods A to-tal of 50 patients with overdenture restoration treatment in this department from April 2012 to April 2014 were enrolled .Abutment tooth were given magnetic attachments restoration after preparations .The masticatory efficiency ,patient satisfaction and post-resto-ration complication were observed and recorded .Results The immediate masticatory efficiency after magnetic attachments restora-tion (0 .65 ± 0 .09) was significant higher than that before restoration(0 .22 ± 0 .04) ,t= 20 .812 ,P 0 .05) .There were 49 cases of immediate satisfaction and 1 case of satisfactory after restoration ,the patient satisfaction rate was 100% ,it was significant higher than that of before restoration(46% ) ,χ2 = 31 .815 ,P< 0 .05 .There were 45 ca-ses of satisfaction and 5 case of satisfactory after restoration ,the patient satisfaction rate was 100% ,it was significant higher than that of before restoration (χ2 = 31 .815 ,P< 0 .05) .Conclusion The masticatory efficiency could be improved significantly by mag-netic attachments to restore denture depletion or dentition defect ,compare with traditional denture ,it can significant shorten adapt time for patients ,and it can enhance patient satisfaction .It has wide prospect for future clinical application .
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Objective: The aim of this study was to criticaly review the published literature regarding the clinical aspects involved in the rehabilitation of edentulous patients using Branemark protocol and overdenture prostheses.Methods: An active search was conducted in the LILACS, MEDLINE, PubMed, and SciELO databases using the descriptors: "Coating for dentures" (Overlay Prosthesis and Overdenture) and "Implant-supported fixed dental prosthesis" (Protesis dental de suporte implantado, Dental prosthesis, and Implant Supported Prosthesis) in Portuguese, English, and Spanish between January 2000 and October 2014.Results: The following parameters should be considered when selecting between Branemark protocol and overdenture prostheses: bone support, lip support, lip-line, upper lip length, oral mucosa conditions and size, alveolar ridge contour, crown-bone ratio, interarch space, and speaking space. Overdenture rehabilitation can provide many benefits to patients, such as prosthetic retention, stability, comfort, and improved aesthetics.Conclusions: This study highlights the need for a thorough individualized treatment planning to ensure that fixed prostheses and overdentures have an excellent prognosis when used appropriately in suitable patients at the appropriate time.
Objetivo: Verificar por meio de revisão crítica da literatura os aspectos clínicos durante o planejamento de pacientes edêntulos frente à utilização de próteses tipo protocolo de Branemark e overdenture.Métodos: Busca ativa nas bases de dados LILACS, MEDLINE, PubMed e SciELO por meio dos descritores: "Revestimento de dentadura" (Prótese de Recobrimento e Overdenture) e "Prótese dentária fixada por implante" (Protesis dental de suporte implantado e Dental prosthesis, implant supported) entre janeiro de 2000 até outubro de 2014 nas línguas Portuguesa, Inglesa e Espanhola.Resultados: Deve-se levar em consideração para indicar as próteses overdentures e protocolo o suporte ósseo, suporte labial, linha do sorriso, comprimento do lábio superior, qualidade e quantidade da mucosa, contorno do rebordo alveolar, relação coroa/osso, espaço interarcos e zona fonética. A reabilitação com overdenture pode trazer muitos benefícios ao paciente, tais como retenção, estabilidade, conforto, e a estética.Conclusões: Evidencia-se a necessidade de um planejamento individualizado, para que se chegue a um correto plano de tratamento, no qual as próteses fixas e overdentures possam ter um excelente prognóstico, desde que utilizadas no momento apropriado e no paciente indicado.
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The reestablishment of the vertical dimension of occlusion is an important phase during prosthodontics treatment. Its reduction can be a consequence of severe bruxism, and patient rehabilitation requires complex, expensive, and long treatments. In this context, an overlay removable partial denture is a viable alternative, as it represents a simple manufactured reversible treatment. As a temporary treatment, it does not require tooth wear, reestablishes vertical dimension of occlusion, and allows the patient to adapt to this new dimension until the definitive rehabilitation treatment can be planned and finished. This case report describes the temporary rehabilitation of a maxillary complete edentulous bruxist patient with excessive tooth wear on his lower jaw, seeking treatment at the Removable Prosthodontics Department at State University of Ponta Grossa to replace his upper complete denture. A new complete denture was made and the implementation of an overlay removable partial denture was proposed to be made to the lower arch, which provided aesthetics and function to the patient until the completion of the definitive work. The patient was instructed and guided about the causal factors and consequences of his parafunctional habit and was taught methods for self-perception to control frequency. For the final rehabilitation, a new maxillary complete denture with metal occlusal surfaces will be made as well as metaloceramic crowns with metal occlusal using intraradicular retention with cast posts. An occlusal splint will be inserted in the lower jaw as supportive therapy to control the parafunctional habit.
O restabelecimento da dimensão vertical de oclusão é uma etapa importante e indispensável durante a realização de trabalhos protéticos. Sua diminuição pode ser consequência do bruxismo severo e a reabilitação dos pacientes exige a realização de tratamentos complexos, de alto custo e tempo prolongado para execução. Neste contexto, a prótese parcial removível overlay é uma alternativa viável, pela reversibilidade do tratamento e simplicidade de execução. Como tratamento provisório, não necessita de preparo dental, restabelece a dimensão vertical de oclusão e permite que o paciente se adapte a esta nova dimensão, até que seja planejado e executado o tratamento reabilitador definitivo. O presente caso clínico descreve a reabilitação provisória de um paciente bruxista, desdentado total superior, com desgaste dental excessivo na arcada inferior que procurou tratamento na Clínica de Prótese Removível da Universidade Estadual de Ponta Grossa para substituição de sua prótese total superior. Uma nova prótese total foi confeccionada e proposta a execução de uma prótese parcial removível overlay para o arco inferior, a qual devolveu estética e função ao paciente até a realização do trabalho definitivo. O paciente foi instruído e orientado sobre os fatores desencadeantes e consequências de seu hábito parafuncional e conscientizado no intuito da autopercepção para controle da frequência. Para a reabilitação final, será confeccionada uma nova prótese total superior com superfícies oclusais metálicas, coroas metalocerâmicas com oclusal em metal utilizando retenção intracanal com núcleos metálicos fundidos. Uma placa miorrelaxante será instalada sobre a arcada inferior como terapia de suporte para controle do hábito parafuncional.
ABSTRACT
PURPOSE: The purpose of this prospective study was to compare the satisfaction levels of the patients worn implant supported mandibular overdentures and conventional complete dentures. MATERIALS AND METHODS: Full edentulous patients (n=40) who were planned to do implant supported mandibular overdentures, aged 51 to 82 years, were enrolled in this study. All subjects rated their satisfaction levels (mastication, pronunciation, esthetics, pain, and general satisfaction) of their original conventional dentures prior to treatment and their new overdentures 1 week and 12 weeks after the delivery on 10 cm visual analogue scales. Repeated-measures ANOVA was performed to compare the satisfaction level of each three period (P<.05). RESULTS: The mean satisfaction levels of the implant supported overdentures after 1 week and 12 weeks of delivery were significantly higher than those of the conventional complete dentures in all scoring parameters (P<.05). After 12 weeks of overdenture delivery, the increase of the satisfaction levels in mastication, pronunciation, and pain and the decrease in esthetics and general satisfaction were observed in comparison with those after 1 week of delivery, however, no significant difference was found between the satisfaction levels of 1 week and 12 weeks after delivery. CONCLUSION: An implant supported overdenture might be one of the effective ways to give more satisfaction to patients who were not gratified with a conventional denture and eventually to improve their quality of life.
Subject(s)
Humans , Dental Implants , Denture, Complete , Denture, Overlay , Dentures , Esthetics , Mastication , Patient Satisfaction , Prospective Studies , Quality of Life , Weights and MeasuresABSTRACT
La reposición de los dientes no solamente influye en la adecuada alimentación y fonética, sino que también mejora la sonrisa y la apariencia personal, además del aspecto positivo que produce en el estado de salud psicológico y emocional de los niños afectados. Se presentan tres casos clínicos de niños con oligodoncias asociadas a displasia ectodérmica hidrótica, atendidos en la consulta de prótesis de la Clínica Estomatológica de Especialidades de Cienfuegos. Fueron rehabilitados con prótesis parcial removible acrílica, sobredentadura y prótesis parcial fija, respectivamente. Estas constituyen opciones de tratamiento efectivas, que solucionan el problema estético y funcional de los pacientes, y por tanto, mejoran su calidad de vida.
Replacement of teeth not only contributes to adequate nutrition and phonetics, but also improves the smile and appearance, in addition to its positive impact on the psychological and emotional health of the affected children. Three cases of children with oligodontias associated with hidrotic ectodermal dysplasia who were treated at the prosthetics consultation of the Specialized Dental Clinic in Cienfuegos are presented. They were rehabilitated through acrylic removable partial dentures, overdenture and fixed partial denture, respectively. These are effective treatment options that solve the aesthetic and functional problems of the patients, and therefore improve their quality of life.
ABSTRACT
A perda dentária resulta em diversos prejuízos funcionais, tais como a reabsorção óssea, diminuição da capacidade proprioceptiva, do controle da freqüência e do ciclo mastigatório, e da própria capacidade mastigatória. Nos pacientes candidatos à prótese total esses efeitos são ainda mais danosos e podem comprometer o sucesso desta modalidade de tratamento. Uma maneira de evitar esses efeitos é a manutenção das raízes dentárias remanescentes, e sua utilização como suporte para uma overdenture. Esta opção de tratamento é uma alternativa que, quando bem indicada e realizada, apresenta uma série de vantagens sobre as próteses totais convencionais, como a diminuição da reabsorção óssea, manutenção do ligamento periodontal, da propriocepção, e possibilidade de se utilizar sistemas retentivos para a prótese, melhorando assim a retenção e a estabilidade das mesmas, gerando, conseqüentemente, uma maior satisfação ao paciente. Este artigo relata um caso clínico no qual dois caninos inferiores foram utilizados como suportes para uma overdenture retida pelo sistema barra-clip, apresentando a técnica de confecção e confirmando as overdentures como uma alternativa reabilitadora viável
The dental loss results in several functional damages, such as bone resorption, decrease of the proprioceptive capacity and of the control and the capacity of the chewing capacity. In those patients who wear complete dentures those effects are still more harmful and they can commit the success of this treatment modality. Away to avoid those effects would be the maintenance of the remaining dental roots, and their use as support for an overdenture. This treatment modality is an alternative that, when well indicated and accomplished, presents a series of advantages over the conventional complete dentures, as the decrease of the bone resorption, maintenance of the periodontal ligament, of the proprioception, and possibility of using retentive systems for the prosthesis, improving the retention and the stability of them, giving, consequently, a larger satisfaction to the patient. We will present a clinical case in which two inferior canine teeth were used as supports for an overdenture retained by a bar, presenting the technique and ratifying it as a viable alternative restorative treatment
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Objective To evaluate the clinical effects of magnetic attachments in complete overdenture. Methods Casting method was used to fabricate Coping-Keepers for remained roots, and the patients were followed up for 6 months to check the effects of the overdentures retained with Magfit EX attachments. In the experimental group, 21 complete overdentures were made with 33 Magfit EX magnetic attachments for 18 patients. Eleven patients treated with traditional complete overdentures were selected to act as control. The retention force, aspect and comfortableness were subjectively evaluated by the patients of the both groups. Abutment status was observed and compared before and after cementation of the magnetic attachments by measuring periodontal index, including gingival index (GI), sulcus bleeding index (SBI) and bleeding on probing (BOP), etc. Masticatory function of patients in the both groups was measured at 3 time points: immediate, 3 months and 6 months after cementation. Results Patients in experimental group were more satisfied with complete overdentures made up of magnetic attachments than those in control group, especially in retention force and masticatory efficiency and aspect. Magnetic attachments can provide enough retention force for patients and greatly improved the masticatory efficiency and the abutment condition. The masticatory function was to be perfect and stable after 3-6 months. Furthermore, the mobility and periodontal index of most abutments improved after 6 months. Conclusion It is proved that magnetic attachments are effective to improve the function of complete overdentures, worthy to be used widely. It is suggested that the residual root and loosened tooth should be preserved furthest as possible in clinic.