Relevant bibliographies by topics / Implant overdenture

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Academic literature on the topic 'Implant overdenture'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Implant overdenture"

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Simões, Ingrid ísis Nogueira, Silvana Marques Miranda Spyrides, Fabiana Ribeiro da Silva Schanuel, and Elson Braga De Mello. "Comparative study of splinted and unsplinted implant-retained maxillary overdentures without palatal coverage: A literature review." Brazilian Dental Science 20, no. 4 (2017): 32. http://dx.doi.org/10.14295/bds.2017.v20i4.1482.

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<p>The palatal coverage is considered as an auxiliary element in the distribution of tensile strains on implant maxillary total prosthesis (implant overdentures) bases, either implant-supported or retained. However, complaints in some patients due to palate and phonetic impairment are constant. The palatal coverage removal would allow the improvement of these issues as well as pharyngeal control, salivary flow and hygiene. Thus, this literature review proposed to analyze the survival rates of dental implants retaining an implant maxillary overdenture without palatal coverage in edentulous maxilla. The review was conducted in Medline database, via PubMed between 2000 to 2016 period, and limited to English language publications. The search strategy took the following key-words, referencing title and / or abstract: dental implants; maxilla; maxillary; overdenture; and palatal coverage. According the data, the rehabilitation of the maxillary edentulous with four implant-supported overdentures with bar attachments and implant-retained with ball attachments has shown great survival rates of dental implants, but there are a few studies reporting the survival rate of implant overdentures. It was concluded that the prosthetic rehabilitation of total maxillary edentulous patients is viable through palateless implant overdentures when a minimum of four to six implants were used with careful planning and execution.</p><p> </p><p><strong>Keywords</strong></p><p>Dental Implants; Maxilla; Overdenture and Palatal coverage.</p>
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Ebadian, Behnaz, Ramin Mosharraf, and Niloufar Khodaeian. "Effect of cantilever length on stress distribution around implants in mandibular overdentures supported by two and three implants." European Journal of Dentistry 10, no. 03 (2016): 333–40. http://dx.doi.org/10.4103/1305-7456.184152.

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ABSTRACT Objective: There is no definitive study comparing stress distribution around two versus three implants in implant-retained overdentures with different cantilever length. The purpose of this finite element study was to evaluate stress pattern around the implants of the 2 or 3 implant-supported mandibular overdenture with different cantilevered length. Materials and Methods: The models used in this study were 2 and 3 implant-supported overdenture with bar and clip attachment system on an edentulous mandibular arch. Each model was modified according to cantilever length (0 mm, 7 mm, and 13 mm); thus, 6 models were obtained. The vertical load of 15 and 30 pounds were applied unilaterally to the first molar and 15 pounds to the first premolar, and the stress in bone was analyzed. Results: With increasing cantilever length, no similar stress pattern changes were observed in different areas, but in most instances, an increase in cantilever length did not increase the stress around the implant adjacent to cantilever. Conclusions: Within the limitations of this study, it can be concluded that increasing of cantilever length in mandibular overdentures retained by 2–3 implants did not cause distinct increasing in stress, especially around the implant adjacent to cantilever, it may be helpful to use cantilever in cases of mandibular overdenture supported by splinted implants with insufficient retention and stability. Based on the findings of this study, optimal cantilever length in mandibular overdenture cannot be determined.
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Uludağ, Bülent, and Volkan Şahin. "A Functional Impression Technique for an Implant-supported Overdenture: A Clinical Report." Journal of Oral Implantology 32, no. 1 (2006): 41–43. http://dx.doi.org/10.1563/0-774.1.

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Abstract Overdenture support is derived from oral mucosa and retained roots or implants. Functional loads must be distributed, optimally, between the supporting structures for the success of overdentures; such a distribution may be obtained with the use of functional impression procedures. A functional impression technique is described for the fabrication of an implant-supported overdenture.
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Nischal, K., and R. Chowdhary. "Early Loaded Single Implant Reinforced Mandibular Overdenture." Case Reports in Dentistry 2016 (2016): 1–4. http://dx.doi.org/10.1155/2016/4213753.

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Rehabilitating atrophied mandible with two-implant supported denture is a common treatment modality for implant retained removable overdenture in mandible. This paper aims to design a treatment modality where single implant reinforced overdenture is fabricated for a severely atrophied mandibular ridge with early loading protocol. Results of studies have shown that a single implant mandibular overdenture significantly increases the satisfaction and quality of life of patients with edentulism. Midline fracture of the prosthesis is the most common complication related to single implant and two-implant retained mandibular overdentures. To manage such complication, a thin metal mesh is used to reinforce the overdenture and also to make the prostheses lighter and cost effective as compared to conventional cast metal framework.
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Jagger, Robert G., Sahar Shaikh, and Daryll C. Jagger. "Clinical Effectiveness of Mandibular Implant-retained Overdentures." Primary Dental Care os8, no. 1 (2001): 19–24. http://dx.doi.org/10.1308/135576101771799353.

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Introduction The literature reports that the treatment of fully edentulous mandibles with implant-retained over-dentures has become a recognised form of therapy: however long-term data on the success are limited. The aim of the present study was to describe the clinical effectiveness of mandibular implant-supported/retained overdentures in the management of a group of edentulous patients. Materials and Methods The study group consisted of 59 consecutive edentulous patients attending the clinic of prosthetic dentistry at Cardiff Dental Hospital, who had been provided with implants in the mandible for complete overdenture retention. Several clinical parameters were examined in each patient: mobility of each implant, probing pocket depth, the presence or absence of plaque and calculus on each implant, bleeding index, marginal bone loss, jaw bone quality and quantity, complications that had occurred with the implants and patients opinions of the treatment. Discussion Of implants placed, 97% remained in function. Three fixtures had been lost. There was a high frequency of bleeding on probing. Complications associated with treatment included damage or looseness of abutment screws, fracture of the bar, entrapment of food beneath the overdenture and looseness of the opposing non-implant-retained complete denture. Conclusion In general a very high degree of patient satisfaction with the implant-retained overdentures was recorded.
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Timmerman, R., G. T. Stoker, D. Wismeijer, P. Oosterveld, J. I. J. F. Vermeeren, and M. A. J. van Waas. "An Eight-year Follow-up to a Randomized Clinical Trial of Participant Satisfaction with Three Types of Mandibular Implant-retained Overdentures." Journal of Dental Research 83, no. 8 (2004): 630–33. http://dx.doi.org/10.1177/154405910408300809.

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Studies have shown that mandibular implant overdentures significantly increase satisfaction and quality of life of edentulous elders. Improved chewing ability appears to have a positive impact on nutritional state. Therefore, it is important to determine the best design of this prosthesis over the long term. In this randomized controlled trial, three groups of edentulous participants with atrophic mandibles wore 3 types of implant overdentures. During an eight-year follow-up, only seven of the 110 participants had dropped out of this study. Almost all participants were still satisfied with their overdentures. Participant satisfaction concerning retention and stability of the mandibular overdenture had decreased significantly in the two-implant ball attachment group, whereas the opinion of participants in the single- and triple-bar groups was still at the same level. The long-term results suggest that a mandibular overdenture retained by 2 implants with a single bar may be the best treatment strategy for edentulous people with atrophic ridges.
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Geertman, M. E., A. P. Slagter, M. A. J. van Waas, and W. Kalk. "Comminution of Food with Mandibular Implant-retained Overdentures." Journal of Dental Research 73, no. 12 (1994): 1858–64. http://dx.doi.org/10.1177/00220345940730121101.

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When complete-denture wearers are treated with from four to six implants and mandibular implant-borne prostheses, masticatory performance improves. No significant improvement has been observed with two implants and implant-mucosa-borne overdentures, suggesting that the masticatory performance of edentulous subjects depends on the degree of support for their mandibular prostheses by implants or alveolar mucosa. To verify this hypothesis, we studied, in a randomized clinical trial, the comminution of an artificial test food during mastication. The trial involved the provision of a new maxillary denture and either a new conventional mandibular denture, a mandibular overdenture retained by two permucosal cylindric implants through a single bar-clip attachment, or a mandibular overdenture retained by a transmandibular implant through five clips on a triple-bar construction with cantilever extensions. In comparison with the subjects wearing mandibular implant-retained overdentures, the subjects with conventional complete dentures needed between 1.5 and 3.6 times more chewing strokes to achieve an equivalent reduction in particle size. No differences in masticatory performance and efficiency were found between the subjects who had received two permucosal cylindric implants and those who had received a transmandibular implant. The results suggest that the increased retention and stability of the mandibular denture, rather than the degree of support by implants or alveolar mucosa, determine the wearer's ability to comminute food during mastication.
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Alberga, Jamie M., Anke Korfage, Ilse Bonnema, Max J. H. Witjes, Arjan Vissink, and Gerry M. Raghoebar. "Mandibular dental implant placement immediately after teeth removal in head and neck cancer patients." Supportive Care in Cancer 28, no. 12 (2020): 5911–18. http://dx.doi.org/10.1007/s00520-020-05431-y.

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Abstract Background Little is known about immediate implant placement in head and neck cancer patients. We studied implant survival and functional outcomes of overdentures fabricated on implants placed immediately after removal of the lower dentition during ablative surgery or preceding primary radiotherapy (RT). Methods Inclusion criteria were primary head and neck cancer, dentate lower jaw, and indication for removal of remaining teeth. Two implants to support a mandibular overdenture were placed immediately after extraction of the dentition during ablative surgery, or prior to starting primary radiotherapy. Standardized questionnaires and clinical assessments were conducted (median follow-up 18.5 months, IQR 13.3). Results Fifty-eight implants were placed in 29 patients. Four implants were lost (implant survival rate 93.1%). In 9 patients, no functional overdenture could be made. All patients were satisfied with their dentures. Conclusions Combining dental implant placement with removal of remaining teeth preceding head neck oncology treatment results in a favorable treatment outcome.
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Flanagan, Dennis. "An Implant-Retained Maxillary Overdenture to Obturate a Patent Oronasal Communication: A Case Report." Journal of Oral Implantology 35, no. 1 (2009): 12–17. http://dx.doi.org/10.1563/1548-1336-35.1.12.

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Abstract This is a case report of dental prosthetic treatment of a 72-year-old patient with cleft palate with a persisting oral nasal communication in the anterior hard palate. The remaining teeth were extracted, and dental implants were surgically placed in the maxilla and mandible to retain removable overdentures. The maxillary complete overdenture had full palatal coverage as opposed to partial coverage. It was retained by 5 implants with low-profile light retentive retainers. The mandibular overdenture was retained with 4 implants of different diameters and brands. Apparent parameters for successful treatment of a removable maxillary overdenture are as follows: denture flanges, flat or lingualized occlusal scheme, light low-profile retainer retention, maximum implant positional spread with parallel placement, and a minimum of 4 rough-surfaced, long, wide implants placed in denser-type bone sites.
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Mangano, Francesco, Carlo Mangano, Bidzina Margiani, and Oleg Admakin. "Combining Intraoral and Face Scans for the Design and Fabrication of Computer-Assisted Design/Computer-Assisted Manufacturing (CAD/CAM) Polyether-Ether-Ketone (PEEK) Implant-Supported Bars for Maxillary Overdentures." Scanning 2019 (August 22, 2019): 1–14. http://dx.doi.org/10.1155/2019/4274715.

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Purpose. To present a digital method that combines intraoral and face scanning for the computer-assisted design/computer-assisted manufacturing (CAD/CAM) fabrication of implant-supported bars for maxillary overdentures. Methods. Over a 2-year period, all patients presenting to a private dental clinic with a removable complete denture in the maxilla, seeking rehabilitation with implants, were considered for inclusion in this study. Inclusion criteria were fully edentulous maxilla, functional problems with the preexisting denture, opposing dentition, and sufficient bone volume to insert four implants. Exclusion criteria were age<55 years, need for bone augmentation, uncompensated diabetes mellitus, immunocompromised status, radio- and/or chemotherapy, and previous treatment with oral and/or intravenous aminobisphosphonates. All patients were rehabilitated with a maxillary overdenture supported by a CAD/CAM polyether-ether-ketone (PEEK) implant-supported bar. The outcomes of the study were the passive fit/adaptation of the bar, the 1-year implant survival, and the success rates of the implant-supported overdentures. Results. 15 patients (6 males, 9 females; mean age 68.8±4.7 years) received 60 implants and were rehabilitated with a maxillary overdenture supported by a PEEK bar, designed and milled from an intraoral digital impression. The intraoral scans were integrated with face scans, in order to design each bar with all available patient data (soft tissues, prosthesis, implants, and face) in the correct spatial position. When testing the 3D-printed resin bar, 12 bars out of 15 (80%) had a perfect passive adaptation and fit; in contrast, 3 out of 15 (20%) did not have a sufficient passive fit or adaptation. No implants were lost, for a 1-year survival of 100% (60/60 surviving implants). However, some complications (two fixtures with peri-implantitis in the same patient and two repaired overdentures in two different patients) occurred. This determined a 1-year success rate of 80% for the implant-supported overdenture. Conclusions. In this study, the combination of intraoral and face scans allowed to successfully restore fully edentulous patients with maxillary overdentures supported by 4 implants and a CAD/CAM PEEK bar. Further studies are needed to confirm these outcomes.
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Dissertations / Theses on the topic "Implant overdenture"

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Kuoppala, R. (Ritva). "Outcome of implant-supported overdenture treatment." Doctoral thesis, Oulun yliopisto, 2016. http://urn.fi/urn:isbn:9789526210889.

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Abstract The retention of a complete denture and the patient’s adaptation varies considerably among different individuals. Resorption of the edentulous alveolar ridge differs greatly and some patients need implant-retained overdentures to enable adequate retention of their prostheses. In some extreme cases it is necessary to increase the volume of the alveolar ridge with bone grafts. The aim of this study was to examine the outcome of implant-supported overdenture treatment conducted in Oulu University Hospital. The aim was also to assess the impact of treatment on oral health-related quality of life and patient satisfaction. The study group was comprised of patients treated with a mandibular or maxillary implant overdenture and a group of patients with extreme mandibular bone resorption treated with extraoral bone grafts and implants. The treatments were performed in 1985–2013 thus also providing long-term results. The results of this study showed predictable and successful treatment outcomes also among elderly patients and in severe situations with bone deficiency. The most frequent complication in the clinical follow-up was loosening of the retention mechanism, commonly noted in other previous studies. Despite some minor mechanical defects in prosthetic structures or mild mucosal inflammation around the implants, they did not hinder everyday use of the prostheses. Neither the number of supporting implants nor the connection type seemed to have a great impact on patient satisfaction. Older patients with a mandibular overdenture seemed to be most satisfied. In conclusion, treatment with implant overdentures seems to be successful also in the long-term
Tiivistelmä Kokoproteesin pysyvyys ja potilaan sopeutuminen proteesiin vaihtelee huomattavasti eri yksilöiden välillä. Hampaattoman luuharjanteen resorptiossa on eroja, ja osalle potilaista implanttikiinnitteinen peittoproteesi on välttämätön riittävän proteesin pysymisen mahdollistamiseksi. Hyvin pitkälle edenneissä luuharjanteen resorptioissa voi leukaluun lisääminen luusiirteillä olla tarpeellista. Tutkimuksen tarkoituksena oli selvittää Oulun yliopistollisessa sairaalassa tehtyjen implanttikiinnitteisten peittoproteesihoitojen tuloksia. Tavoitteena oli myös arvioida hoidon vaikutusta suunterveyteen liittyvään elämänlaatuun ja potilastyytyväisyyteen. Tutkittava ryhmä koostui potilaista, joille oli valmistettu alaleukaan tai yläleukaan implanttikiinnitteinen peittoproteesi, ja potilasjoukosta, jolle hyvin pitkälle edenneen luuresorption vuoksi implanttihoito oli tehty luusiirteiden avulla. Hoidot tehtiin vuosina 1985–2013, ja tutkimuksissa voitiin arvioida myös peittoproteesihoidon pitkäaikaistuloksia. Tutkimus osoitti, että hoitotulokset olivat ennustettavia ja onnistuneita myös iäkkäillä potilailla sekä potilailla, joilla luupuutos oli kaikkein vaikein. Yleisin todettu komplikaatio kliinisessä tutkimuksessa oli proteesin kiinnitysmekanismin löystyminen. Pienet proteesirakenteiden rikkoutumiset tai lievät limakalvon tulehdusreaktiot implanttien ympärillä eivät kuitenkaan haitanneet proteesin toimintaa ja päivittäistä käyttöä. Peittoproteesia tukevien implanttien määrällä tai kiinnitystyypillä ei todettu olevan suurta vaikutusta potilastyytyväisyyteen. Kaikkein tyytyväisimpiä vaikuttivat olevan iäkkäät potilaat, joille oli tehty alaleuan peittoproteesi. Tutkimus osoittaa, että implanttikiinnitteinen peittoproteesihoito on menestyksellistä myös pitkällä aikavälillä
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Alves, Suleima do Vale. "Análise da durabilidade, retenção e tensão em overdentures retidas por implantes associadas ou não a mini-implantes posteriores." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/58/58131/tde-01092017-102655/.

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O objetivo desse estudo in vitro foi analisar a durabilidade, retenção e tensão gerada nos implantes de overdenture retidas por sistema bola/O\'ring ou barra/clipe, associados ou não a mini-implantes na região posterior da mandíbula. Foram utilizados implantes anteriores cone-Morse (3,75 x 11 mm) e mini-implantes de corpo único (2 x 10 mm) e os grupos divididos em (n=12): G2O: overdenture sobre 2 implantes com bola/O´rings; G1B: overdenture sobre 2 implantes com barra/clipe; G4O: overdenture sobre 2 implantes com bola/O´rings e 2 mini-implantes na região posterior; G1B2O: overdenture sobre 2 implantes com barra/clipe e 2 mini-implantes na região posterior. Para avaliação qualitativa das áreas de compressão e/ou tração nos modelos em poliuretano, foi realizado o método de correlação de imagens digitais, com carregamento oclusal (300 N) e pontual (250 N) com captura em vista frontal e lateral dos modelos experimentais. Foi realizado ensaio de fadiga acelerada progressiva com cargas de 80 N, 140 N, 200 N, 260 N, 320 N e 380 N, frequência de 5Hz, totalizando 120.000 ciclos. Para avaliação da retenção os modelos foram submetidos a ensaio de tração previamente a termociclagem (Tempo 1), após 200 N (Tempo 2) e após 380 N (Tempo 3) e a força de retenção foi registradas em triplicata e a média obtida em cada tempo. A análise da durabilidade dos componentes retentivos foi realizada após os ensaios de tração nos tempos determinados por microscopia óptica. As imagens da aplicação de carga oclusal, mostraram que as tensões nos grupos 1B e 1B2O foram semelhantes, nos grupos 2O e 4O apresentaram tensões de tração na região anterior, porém no grupo 4O houve melhor distribuição por toda área analisada. Na aplicação de carga pontual, todos os modelos apresentaram tensões de compressão na região posterior e de tração na anterior, porém com maior intensidade nos modelos 2O e 4O, e menor intensidade nos modelos 1B e 1B2O. Nas análises sobre a retenção dos componentes, não houve diferença significativa (p < 0,05) entre os grupos 1B-1B2O, porém houve diferença significativa entre os grupos 2O-4O, notando maior força retentiva no grupo 4O. As comparações entre os grupos, 1B-2O e 1B2O-4O houve diferença significativa, sendo que os grupos com sistema barra/clipe obtiveram maior retenção que os grupos com O´rings. Nas imagens microscópicas não houve diferença significativa na estrutura interna dos O´rings, porém houve diferença significativa nos clipes. Conclui-se que a durabilidade, retenção e distribuição de tensão não se altera com a colocação de mini-implantes posteriores em overdentures com sistema retentivo barra/clipe. Com sistema retentivo bola/O\'ring a instalação de mini-implantes aumentou a força de retenção e favoreceu a distribuição das tensões, reduzindo a alavanca para posterior.
The purpose of this in vitro study was to analyze the durability, retention and strength caused for implants-retained overdentures by ball/O-ring system or bar/clip, associated or not mini-implants in the posterior region of the mandible. Anterior Morse taper connection implants (3.75 x 11 mm) and single-body mini-implants (2 x 10 mm) were used and the groups divided to (n=12): G2O: implants-retained overdentures 2 implants with ball/O-rings ; G1B: implants-retained overdentures 2 bar/clip implants; G4O: implants-retained overdentures 2 implants with ball/O-rings and 2 mini-implants in the posterior region ; G1B2O: implants-retained overdentures 2 implants with bar/clip and 2 mini-implants in the posterior region. For the qualitative evaluation of compression and/or traction areas in polyurethane models, a digital image correlation method (DIC) with occlusal (300 N) and punctual (250 N) loading was applied with frontal and lateral views of the experimental models. An accelerated progressive fatigue test with loads of 80 N, 140 N, 200 N, 260 N, 320 N and 380 N, frequency of 5 Hz, completing120,000 cycles. In order to evaluate the retention force, the models were submitted to traction force, previously to thermocycling (Time 1) after 200 N (Time 2) and posteriorly 380 N (Time 3), being the retention force recorded in triplicate. The durability analysis, by optic microscopy, of the retentive components was performed after the traction tests at the determined times. The application images of the occlusal load, showed that the stress in groups 1B and 1B2O were similar, in groups 2O and 4O presented stress in the anterior region, but in the 4O group, there was better distribution throughout the analyzed area. In the application of punctual loading, all the models presented compression tensions in the posterior region and traction in the anterior one, but with greater intensity in the 2O and 4O models, and lower intensity in the 1B and 1B2O models. In the retention analyzes of the components, there was no significant difference (p <0.05) between groups 1B-1B2O, but there was a significant difference between groups 2O-4O, noting a higher retentive force in the 4O group. The comparisons between the groups, 1B-2O and 1B2O-4O showed a significant difference, and the groups with bar/clip systems obtained higher retention than the groups with O-rings. In the microscopic images, there was no significant difference in the O-rings internal structure, but there was a significant difference in the clips images. It was concluded that the durability, retention and stress distribution do not change with the placement of posterior mini-implants in overdentures with retentive bar/clip system. With retentive system ball/O-ring the installation of mini-implants increased the retention force and favored much the distribution of the stress, thus reducing the forefoot leverage to the posterior part of the prosthesis.
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Scherer, Michael David. "Comparison of Retention and Stability of Implant-Retained Overdentures Based Upon Implant Location, Number, and Distribution." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1336664206.

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Liddelow, Glen J. "The immediately loaded single implant retained mandibular overdenture : a 3 year prospective study." University of Western Australia. School of Dentistry, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0072.

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The purpose of this study was to ascertain whether simplifying mandibular overdenture treatment utilising single stage surgery and immediate prosthetic loading of a single implant, will achieve similar implant success rates and functional improvement to that expected using conventional techniques. As part of this study, the Mk III Brånemark implant with an oxidised surface (TiUnite™ Nobel Biocare AB, Göteborg, Sweden) was compared to the classical machined Mk III Brånemark fixture.Materials and Methods: 35 patients with a mean age of 68 years and problematic mandibular dentures were treated. The primary complaints among the patients referred to the clinic for treatment related to poor retention of the mandibular denture, instability, denture sores and phonetic problems. Patients were initially placed randomly into the “machined surface” or “oxidised surface” group. A single implant was placed into the mandibular midline with high initial stability. A ball attachment was placed and the retentive cap incorporated into the existing denture. Reviews took place at 3,12 6 6 and 36 months. Clinical assessments, radiographs made with custom film holders, and stability measurements by both manual and resonance frequency analysis methods were recorded. All complications, failures, maintenance and reasons for dropout were noted. Visual analogue scale questionnaires were utilised to record patient satisfaction. (ANOVA p<.05) Results: Three out of 8 machined surface implants failed, representing an unacceptably high failure rate (37.5%). The machined surface was therefore discontinued for this study. Three oxidised surface implants did not achieve sufficient primary stability to be immediately loaded, so were treated with a two stage delayed loading protocol. The 25 immediately loaded oxidised surface implants were all classified as surviving at the 36-month recall. Patient satisfaction was very high with a significant increase in all comfort and functional parameters. Conclusions: Within the limitations of this study and research design, it appears that the immediately loaded single implant retained mandibular overdenture, using an oxidised implant surface in a small group of maladaptive patients, can provide a beneficial treatment outcome over a three year observation period. If insufficient stability at insertion is not achieved for immediate loading, then a delayed loading protocol should be utilised.
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Ma, Matthew P. "The radiographic assessment of dental implant treatments : a pilot study on two-implant supported overdenture cases /." Title page, contents and summary only, 1998. http://web4.library.adelaide.edu.au/theses/09DM/09dmm111.pdf.

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Nogueira, Túlio Eduardo. "Avaliação clínico-radiográfica e estabilidade implantar em overdenture mandibular retida por implante unitário." Universidade Federal de Goiás, 2014. http://repositorio.bc.ufg.br/tede/handle/tede/4208.

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Objective: To conduct a longitudinal evaluation of marginal bone loss, peri-implant aspects and stability in single implant used to retain mandibular overdenture, and to evaluate outcomes related to the overdenture. Methods: Forty-five completely edentulous individuals were treated using mandibular overdenture retained by a single implant (Titamax IT Cortical, Neodent, Curitiba, Brazil) opposed to conventional dentures. According to the primary stability obtained in the implant placement patients were treated with an immediate loading protocol when torque was at least 30 Ncm and implant stability quotient (ISQ) at least 60. In cases of values below cited conventional loading protocol were adopted. O’Ring attachment system from two different commercially available companies were used and allocated systematically between subjects. Follow-up evaluations were performed immediately and at 3 and 6 months after implant placement, when parameters related to implant stability, periimplant tissue aspects, implant survival rate and need for the maintenance of the overdenture were noted. Results: 38 (84.4%) of 45 patients received immediate loaded implants. Implant failure occurred in 3 cases, 2 of them in the conventional loading group (early loss before implant loading). There was an increase in ISQ values in subsequent periods after implant placement, evidenced between baseline and 6 months (p=0.004) and between 3 and 6 months (p<0.001). The mean marginal bone loss at follow-up was 0.50 mm (SD=0.66). It was observed gradual reduction of the gingival height up to 6 months (p=0.006), as well as progressive reduction in plaque index (p=0.028) and bleeding on probing (p=0.021). There was no difference in clinical condition concerning the attachments that were compared. However, Neodent attachments showed better clinical performance and lower replacement rates (p=0.014). Conclusion: This clinical study suggested that the single implant-retained mandibular overdenture is a feasible treatment for mandibular edentulousness, showing favorable clinical and radiographic periimplant outcomes as well as maintenance of the implant stability.
Objetivo: Realizar avaliação longitudinal da perda óssea marginal, aspectos periimplantares e da estabilidade em implante unitário utilizado para retenção de overdenturs mandibular, além de avaliar desfechos relacionados às próteses. Métodos: Quarenta e cinco indivíduos desdentados totais foram tratados com overdenture mandibular retida por implante unitário em oposição a prótese total superior convencional. De acordo com a estabilidade primária obtida no momento de instalação do implante, os indivíduos foram tratados com protocolo de carregamento do implante imediato quando o torque final de instalação era de no mínimo 30 Ncm e o quociente de estabilidade implantar (ISQ) de no mínimo 60. Em casos de valores abaixo dos citados, era adotado o protocolo de carga convencional. Utilizou-se o sistema de retenção O’Ring de duas marcas comerciais, alocados sistematicamente entre os sujeitos. Os desfechos avaliados foram: estabilidade do implante, aspectos teciduais periimplantares e necessidade de manutenção das próteses. O acompanhamento foi realizado nos períodos imediato, 3 e 6 meses após instalação dos implantes. Resultado: Dos 45 pacientes, 38 (84,4%) receberam implante com carga imediata. Houve perda de 3 implantes, sendo 2 no grupo de carga convencional (perda antes do carregamento do implante). O valor médio de ISQ aumentou nos períodos subsequentes à instalação dos implantes, entre o período inicial e de 6 meses (p=0,004) e entre os períodos de 3 e 6 meses (p<0,001). A perda óssea marginal média no período de acompanhamento foi de 0,50 mm (DP=0,66). Foi observada redução progressiva da altura gengival até o período de 6 meses (p=0,006), resultado da acomodação dos tecidos periimplantares, bem como diminuição do índice de placa (p=0,028) e sangramento à sondagem (p=0,021). Não houve diferença na condição clínica em relação às marcas comerciais do sistema de retenção, porém a marca Neodent apresentou desempenho clínico superior com menor ocorrência de substituição da matriz de retenção e maior tempo até necessidade de substituição (p=0,014). Conclusão: O presente estudo clínico mostrou resultados satisfatórios do tratamento com overdenture mandibular retida por implante unitário em relação aos parâmetros clínicos e radiográficos, além da manutenção da estabilidade do implante.
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Cunha, Tatiana Ramirez. "Overdentures mandibulares retidas por mini-implantes ou implantes convecionais: avaliação da função mastigatória e colonização microbiana." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/58/58131/tde-23062015-090159/.

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Implantes de diâmetro reduzido, ou mini-implantes, têm sido recentemente considerados para a retenção e suporte de overdentures mandibulares em pacientes totalmente desdentados. No entanto, pouco se sabe sobre o desempenho da função mastigatória com esse tipo de tratamento e da microbiota associada aos mini-implantes. Portanto, estudos clínicos que validem o tratamento com mini-implantes e overdentures são necessários. Assim, os objetivos deste estudo foram: 1) avaliar a habilidade e performance mastigatórias de indivíduos portadores de overdentures mandibulares retidas por quatro ou dois mini-implantes (grupos I e II, respectivamente) ou dois implantes convencionais (grupo III); 2) comparar a performance mastigatória destes indivíduos com a encontrada em portadores de próteses totais convencionais (grupo IV comparador externo); e 3) comparar qualitativa e quantitativamente a microbiota peri-implantar de mini-implantes e de implantes convencionais. Participaram deste estudo 60 indivíduos portadores de overdentures mandibulares (20 de cada grupo) e 20 portadores de próteses totais convencionais. Três meses após a instalação das overdentures mandibulares (grupos I, II e III), a habilidade mastigatória (HM) foi avaliada por meio de um questionário desenvolvido para esta finalidade. A performance mastigatória (PM) dos participantes foi avaliada seis meses após a instalação das overdentures por meio de um método que determina a alteração de cor de uma goma de mascar utilizada como alimento teste. A microbiota do sulco peri-implantar dos mini-implantes do grupo II e dos implantes convencionais (grupo III) foi identificada e quantificada pelo método DNA Checkerboard (38 espécies de microrganismos avaliadas) em dois momentos: T0 (primeira coleta), realizada 3 meses após a exposição dos implantes à cavidade oral, e T1 (segunda coleta), seis meses após a primeira coleta. Os grupos foram comparados por meio de testes adequados à distribuição dos dados (α=5%). Embora a HM tenha sido semelhante entre os grupos I, II e III, a dificuldade em mastigar alimentos moles associada à overdenture foi maior para o grupo III (Kruskal-Wallis, p=0,041). A PM também foi similar nos grupos I, II e III, mas significantemente maior do que a do grupo IV (Tukey, p<0,05). As 38 espécies alvo do estudo foram detectadas nos dois tipos de implantes em T0 e T1, com exceção da espécie E. faecalis nos implantes convencionais em T1. Houve uma diminuição significante na quantidade total de bactérias e fungos no grupo II e aumento no grupo III (Wilcoxon Pareado, p<0,05) no período analisado. A quantidade total de microrganismos no grupo III foi significantemente maior do que no grupo II em T1 (Mann-Whitney; p<0,05), sendo que mais de 70% das espécies avaliadas estavam presentes em maior quantidade no grupo III (Mann-Whitney; p<0,05). Levando-se em conta as limitações deste estudo, pode-se concluir que overdentures mandibulares retidas por quatro ou dois mini-implantes são tão efetivas quanto aquelas retidas por dois implantes convencionais quanto a habilidade e performance mastigatórias, e que este tipo de reabilitação promove uma performance mastigatória superior à encontrada em portadores de próteses totais convencionais. Além disso, a microbiota do sulco peri-implantar de mini-implantes é quantitativamente inferior e qualitativamente semelhante à microbiota associada a implantes convencionais quando utilizados para reter/suportar overdentures mandibulares.
Narrow diameter implants, or mini dental implants, have recently been considered to retain and to support mandibular and maxillary overdentures in completely edentulous subjects. However, there is scant information about the performance of masticatory function with this type of treatment and the microbiota associated with mini-implants. Therefore, clinical trials to valid the treatment with mini implants and overdentures are necessary. Thus, this study aimed to: 1) assess the ability and masticatory performance in mandibular overdenture wearers after the insertion of four or two mini implants (group I and II, respectively) or two standard-size implants (group III); 2) compare their masticatory performance with that obtained by complete denture wearers (group IV external comparison); 3) compare qualitatively and quantitatively the peri-implant microbiota of mini and standard-size implants. Sixty mandibular overdenture wearers (20 per group) and 20 complete denture wearers participated in the study. Three months after the insertion of the mandibular overdentures (group I, II and III) the masticatory ability (MA) was assessed by a questionnaire developed for this purpose. The masticatory performance (MP) was assessed six months after the insertion of the overdentures by a test using a color-changeable chewing gum. The peri-implant microbiota of mini (group II) and standard-size implants (group III) was identified and quantified by DNA Checkerboard method (38 microorganisms species assessed) in two times: T0 (first collect) three months after the implants exposure to the oral cavity, and T1 (second collect) six months after T0. The groups were compared by tests according to data distribution (α=5%). Although the MA was similar between the assessed groups (I, II and III), the difficult to chew soft foods caused by the overdenture was higher for group III (Kruskal-Wallis, p=0,041). The MP was similar between groups I, II and III. However, it was higher than the MP in group IV (Tukey, p<0,05). All the 38 species were detected in the two implants in T0 and T1, except the E. faecalis in group III in T1. There was a significant decrease in the total amount of bacteria and fungi in group II and increase in group III (Wilcoxon Pareado; p<0,05) during the period analysed. The total amount of microorganisms in group III was higher than in group II in T1 (Mann-Whitney; p<0,05), with over than 70% of the species identified in larger amount in group III (Mann-Whitney; p<0,05). Taking into account the limitations of this study, it was concluded that the mandibular overdentures retained by four or two mini implants are as effective as those retained by two standard-size implants considering the masticatory ability and performance. Moreover, these treatments promote higher masticatory performance than that found in conventional dentures wearers. In addition, the peri-implant microbiota of mini implants is quantitatively lower and qualitatively similar to the microbiota associated with standard-size implants used to retain overdentures.
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Muller, Katia. "The mandibular implant overdenture versus the madibular conventional denture : impact on the nutritional status." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30708.

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There is an ongoing and increasing interest in the significant and essential role that food plays in the health and survival of all people. As masticatory efficiency diminishes drastically in edentulous patients, many researchers in the past two decades have been studying how dietary intake varies when different types of oral rehabilitation are provided. Since the use of implants to support prostheses in edentulous mandibles has been shown to significantly improve masticatory performance, the question remains as to whether this improvement will influence nutritional status. In the present study, we used several nutritional markers to compare the nutritional status of edentulous patients who randomly received either mandibular conventional dentures or implant-supported overdentures one year previously. Although the conventional denture wearers reported having more difficulty chewing hard foods, no significant differences were detected in any of the nutritional markers. Therefore, even though chewing is more difficult for the patients wearing conventional dentures, it appears that the nutritional status of these two groups is similar.
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Muller, Katia. "The mandibular implant overdenture versus the mandibular conventional denture, impact on the nutritional status." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0032/MQ64412.pdf.

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Eid, Omar. "The influence of occlusal form on food penetration using an implant stabilised mandibular overdenture." Thesis, Queen Mary, University of London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.511404.

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Books on the topic "Implant overdenture"

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Clinical and laboratory manual of implant overdentures. Blackwell Munksgaard, 2007.

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Geertman, Maria Elisabeth. Implant-retained mandibular overdentures: Clinical evaluation, satisfaction and mastication ; a prospective clinical study. Institute for Dental Clinical Research, University of Nijmegen, 1995.

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Obeid, Amneh Abdullah Ahmed. Magnet implant system configurations: A method of optimising the effeciency of complete mandibular overdentures. University of Birmingham, 1997.

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Wismeijer, Daniel. The Breda Implant Overdenture Study: An evaluation of clinical and radiological conditions, satisfaction and cost effectiveness in patients treated with mandibular overdentures on ITI-implants. 1996.

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Kavita, Dr Kumari, and Dr Santosh Anand, eds. Implant Overdentures: A Simplistic Overview. AkiNik Publications, 2021. http://dx.doi.org/10.22271/ed.book.1050.

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Overdentures on Oral Implants. Leuven University Press, 1991.

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Shafie, Hamid R. Clinical and Laboratory Manual of Implant Overdentures. Wiley & Sons, Incorporated, John, 2013.

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Shafie, Hamid R. Clinical and Laboratory Manual of Implant Overdentures. Wiley & Sons, Incorporated, John, 2013.

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Shafie, Hamid R. Clinical and Laboratory Manual of Implant Overdentures. Wiley & Sons, Incorporated, John, 2013.

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Shafie, Hamid. Clinical and Laboratory Manual of Implant Overdentures. Blackwell Publishing Limited, 2007.

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Book chapters on the topic "Implant overdenture"

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Burns, David R. "Mandibular Implant Overdenture Treatment: Consensus and Controversy." In Journal of Prosthodontics on Dental Implants. John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119115397.ch10.

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Drago, Carl. "Treatment of a Patient with an Edentulous Mandible Implant-Retained Bar Overdenture and Resilient Attachments." In Implant Restorations. John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781119136187.ch4.

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Jahangiri, Leila, Marjan Moghadam, Mijin Choi, and Michael Ferguson. "Treatment of an Edentulous Patient with Two-Implant-Retained Mandibular Overdenture." In Clinical Cases in Prosthodontics. Blackwell Publishing Ltd., 2013. http://dx.doi.org/10.1002/9781118786864.ch2.

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Pesun, Igor J. "Occlusal Consideration for Mandibular Implant Overdentures." In Mandibular Implant Prostheses. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71181-2_15.

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Emami, Elham, and Pierre-Luc Michaud. "Prosthetic Options: Fixed and Removable Overdentures." In Mandibular Implant Prostheses. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71181-2_7.

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Sanz-Alonso, Javier, Natalia Martínez-Rodríguez, and José Mª Martínez-González. "Immediate Loading of Mandibular Overdentures." In Atlas of Immediate Dental Implant Loading. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05546-2_13.

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Stilwell, Charlotte. "Clinical Assessment of Edentate Elders for Mandibular Implant Overdentures." In Mandibular Implant Prostheses. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71181-2_6.

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Nissan, Joseph. "Implant-Supported Overdentures: Benefits and Risks." In Oral Rehabilitation for Compromised and Elderly Patients. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-76129-9_11.

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Misch, Carl E. "Mandibular and Maxillary Implant Overdenture Design and Fabrication." In Dental Implant Prosthetics. Elsevier, 2015. http://dx.doi.org/10.1016/b978-0-323-07845-0.00030-0.

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Nischal, K., and R. Chowdhary. "Early Loaded Single Implant Reinforced Mandibular Overdenture: A Case Report." In Highlights on Medicine and Medical Research Vol. 10. Book Publisher International (a part of SCIENCEDOMAIN International), 2021. http://dx.doi.org/10.9734/bpi/hmmr/v10/2065f.

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Conference papers on the topic "Implant overdenture"

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Hasan, Md Abu. "Effects of Lingualized and Linear Occlusion Schemes on the Stress Distribution of an Implant Retained Overdenture Using Finite Element Analysis." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52265.

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This study compares the effects of lingualized and linear occlusion schemes on the stress distribution of an implant retained mandibular overdenture (IRO) using finite element analysis (FEA). A high fidelity solid model of mandibular overdenture incorporating cusps and fossae of occlusal surface with two anterior implants in the canine regions and residual ridge support in the posterior region of the alveolar bone was modeled in SolidWorks and imported to ANSYS for stress analysis. The load was applied vertically to the central grooves and buccal cusp tips of the premolars and molar teeth for the lingualized and linear occlusion respectively. The loading magnitudes were 200 N on the premolars and 200 N on the molar teeth with multiple contact locations. The results show that the linear occlusion scheme generated higher stress in the implants and the prosthetic bar than the lingualized occlusion. The locations of high stress concentrations were the neck of the implants and the implant-prosthetic bar intersection for both the occlusion schemes. However, in the cortical bone lingualized occlusion loading scheme generated higher stress (max principal stress) than the linear one suggesting possibility of greater bone loss. The results of this study could be used to comprehend the stress distribution in the denture teeth, base, bone-implant interface and surrounding bone for the two occlusion concepts and may be of help to the clinicians in choosing the right scheme for the edentulous patients.
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Hasan, Md Abu, and Panos S. Shiakolas. "3D Finite Element Stress Analysis of an Implant Supported Overdenture Under Bruxism and Lingualized Loading Conditions." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51688.

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Bruxism is a nonfunctional motor activity that is characterized by grinding and clenching of the teeth. It has been postulated that bruxism causes excessive occlusal load on the dental implant and its superstructures leading to biological and biomechanical complications. While many researchers suggest that grinding/clenching causes early implant complications and accelerated bone loss, others indicate that the long term effects are still unclear. The goal of this study is to analyze the effect of bruxism loading condition on the stress distribution of an implant supported overdenture (ISO) using finite element analysis (FEA) and compare the results with one of the most functionally efficient occlusion schemes in the clinical dentistry — lingualized occlusion. A high fidelity solid model of a mandibular denture encompassing lingual and buccal cusps, mesial and distal fossae supported by four implants and a connecting titanium prosthetic bar, resting on alveolar bone were modeled in SolidWorks 2013 following proper clinical guidelines and imported to ANSYS 15.0 for stress analysis. The results of the study demonstrate that the stress distribution in the implant prostheses and surrounding bone is significantly affected due to bruxism as compared to the lingualized loading. While the location of the maximum stress concentration was the same (neck of the posterior implants) for both loading conditions, there was an increase of approximately 115% von-Mises stress for bruxism loading condition as compared to the lingualized occlusion. The maximum principal stress in the cortical bone surpassed the ultimate tensile strength limit of the jaw bone implying possibility of bone resorption in the peri-implant area.
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Shinawi, L. A., Ayman Al-Dharrab, T. M. Nassef, and S. B. Tayel. "A novel computational analysis of computer milled zirconium implant abutment head design under reinforced implant supported overdenture." In 2013 International Conference on Computer Medical Applications (ICCMA 2013). IEEE, 2013. http://dx.doi.org/10.1109/iccma.2013.6506144.

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Fawzi, S. A. "The influence of bar position on implant-retained mandibular overdenture a three dimensional finite element analysis." In 2012 Cairo International Biomedical Engineering Conference (CIBEC). IEEE, 2012. http://dx.doi.org/10.1109/cibec.2012.6473304.

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Leu, Ming C., and Parthiban Delli. "Digital Manufacturing of Implant Based Dental Restorations." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59242.

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Traditional methods of producing dental bars for overdentures involve tedious and time-consuming operations that demand substantial human labor and demanding skills. Though there exist several CAD/CAM systems that have been developed for various dental restorations like bridges, crowns, etc., there exists no commercial CAD/CAM system at present for design and fabrication of dental restorations for missing multiple teeth. In the research described in the present paper, CAD models of dental bars for implant-retained dental restorations were used as input for three types of fabrication processes: rapid prototyping followed by investment casting, CNC milling, and direct digital manufacturing. Details of material and process combinations and results of comparing these three types of processes, including an analysis on dimensional accuracy, are discussed.
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Elramady, Mona M., Ahmed M. Sayed, Magdy A. Awadalla, Faten S. Mohamed, and Tamer M. Nassef. "Measuring primary stability for the inclined implants retaining mandibular overdenture using resonance frequency." In 2014 Cairo International Biomedical Engineering Conference (CIBEC). IEEE, 2014. http://dx.doi.org/10.1109/cibec.2014.7020923.

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Escobar Fava, ThaÍs, Rafael Leonardo Xediek Consani, and Moises da Costa Ferraz Nogueira. "Análise do efeito do diâmetro do implante nas tensões induzidas em overdentures retidas por um implante – Análise Fotoelástica." In XXV Congresso de Iniciação Cientifica da Unicamp. Galoa, 2017. http://dx.doi.org/10.19146/pibic-2017-78900.

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MARINHO, TATIANE, Rafael Leonardo Xediek Consani, and JÚLIA TREVIZAM CAMPANA. "TENSÕES INDUZIDAS POR OVERDENTURES MANDIBULARES SUPORTADA POR UM IMPLANTE: ESTUDO FOTOELÁSTICO DO EFEITO DA ALTURA DO REBORDO RESIDUAL QUANDO SUBMETIDO AO CARREGAMENTO OCLUSAL." In XXIV Congresso de Iniciação Científica da UNICAMP - 2016. Galoa, 2016. http://dx.doi.org/10.19146/pibic-2016-51198.

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BERALDES DE SOUZA, LARISSA, Rafael Leonardo Xediek Consani, and JÚLIA TREVIZAM CAMPANA. "TENSÕES INDUZIDAS POR PRÓTESE TOTAL MANDIBULAR CONVENCIONAL E OVERDENTURES COM UM OU DOIS IMPLANTES MANDIBULARES SOB O EFEITO DO CARREGAMENTO OCLUSAL SIMULADO: ANÁLISE FOTOELÁSTICA." In XXIV Congresso de Iniciação Científica da UNICAMP - 2016. Galoa, 2016. http://dx.doi.org/10.19146/pibic-2016-51151.

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Reports on the topic "Implant overdenture"

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Liu, Wei. Effects of immediate and delayed loading protocols on marginal bone loss around implants in unsplinted mandibular implant-retained overdentures: A systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review Protocols, 2020. http://dx.doi.org/10.37766/inplasy2020.4.0079.

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