Fixed Prosthesis Research Articles

Effect of Cantilever Extension on Bone Loss in Mandibular Complete-Arch Implant-Supported Fixed Prostheses with Three and Four Implants.

To compare the peri-implant bone loss of mandibular complete-arch implant-supported fixed prostheses (FPSs) supported by three and four implants and to correlate with the size of the horizontal and vertical distal cantilever at prosthesis placement (T1) and after 1 year (T2). A total of 72 external hexagon (EH) type implants were placed in 20 participants. Of these, 24 supported an FPS with three implants (G3I) and 48 with four implants (G4I). The mandibular implants were named 1, 2, 3, and 4 according to their location in the arch, in a clockwise direction. Digital periapical radiographs were taken at times T1 and T2 for analysis and measurement of peri-implant bone loss. The horizontal and vertical distal cantilevers were measured with a digital caliper and correlated with peri-implant bone loss. The survival rate of implants in G3I was 91.66%, and in G4I it was 97.91%. The mean bone loss in G3I was 0.88 ± 0.89 mm, and in G4I it was 0.58 ± 0.78 mm (P = .225). There was no correlation between distal horizontal cantilevers and bone loss in the studied groups, with G3I being -0.25 (P = .197) and G4I -0.22 (P = .129). Larger vertical cantilevers of implants 1 (P = .018), 3 (P =.015), and 4 (P = .045) correlated with greater bone loss in G4I. The number of implants in an FPS did not influence peri-implant bone loss after 1 year of follow-up. Larger vertical cantilevers influenced greater bone loss in complete-arch implant-supported fixed prostheses supported by four implants.

Factors associated with furcation involvement and fixed prostheses: A cross-sectional study.

The study aims to explore the relationship between horizontal and vertical furcation involvement (FI) in teeth with or without a single unit fixed prosthesis (FP). Adult subjects presenting to the periodontics department requiring cone beam computed tomography (CBCT) analysis were recruited for this study. 79 patients, with a total of 200 teeth, were split into two groups based on the presence or absence of FP within the same patient. Our analysis considered patient-level factors like smoking, diabetes, and periodontal severity and tooth-level factors including root trunk length (RTL), probing depth (PD), periodontal supracrestal tissue height (STH), supracrestal tissue attachment (STH-PD), interproximal bone distance (IPBD) to the cementoenamel junction (CEJ) (control) or crown margin (Test), and the distance from the furcation to the CEJ (control) or crown margin (Test). Subsequently, we developed a predictive model for FI. The presence of a prosthesis had a significant association with FI, with an odds ratio (OR) of 12.8 (p < 0.001). Other factors significantly correlated with FI were periodontitis (OR = 10.9; p = 0.006), buccal furcation site (OR = 5.70; p < 0.001), and PD (OR = 1.90; p = 0.027). FP placement increased IPBD by 1.08mm (p < 0.001). The predictive model built for FI demonstrated a sensitivity of 92.9% and a specificity of 66.7%. Fixed prosthesis significantly influenced FI only in periodontitis patients. Factors such as periodontitis Stage, probing depth, and buccal site contribute to FI. The high sensitivity of the predictive model highlights the importance of considering these correlations during treatment planning. Comprehending FI factors is vital for devising customised treatment plans to halt disease progression and enhance outcomes of periodontal regenerative therapies.

Evaluating Communication through Work Authorization between Dentists and Dental Technicians for Fixed Prosthesis

Communication within the dental profession can be challenging and may affect the quality of prostheses delivered to the patient. A methodical investigation into the dynamics between dentists and dental technicians is lacking in Lahore. Objective: To assess adequate practice of communication between dentists and dental technicians through work authorization for fixed prosthesis. Methods: This cross-sectional study was conducted in dental laboratories of Lahore. A questionnaire concerning work authorization forms was distributed to 80 dental technicians through Google Forms and hard copies. The survey concentrated on inquiries related to various aspects of work authorization, including gender, years of experience, impression disinfection, patient demographic data, impression materials used, fixed prosthesis design, and shade selection. An adequate work authorization was assessed in the end. Statistical analysis was conducted SPSS version 25.0 and was analyzed using chi-square, with significance set at p ≤ 0.05. Results: Out of the 80 survey forms disbursed, only 73 completely filled responses were accepted, giving a response rate of 91%. Information regarding patient demographic data (19.2%), patient photographic record (5.5%), pontic design (13.7%), margin design (37%), surfaces covered by metal (9.6%) and occlusal scheme (6.8%), were all on the inferior side of the scale ranging below 40%. Adequate practice of work authorization was discouraging, at only 17.8%. Conclusions: Poorly filled work authorization forms lead to patient and dentist dissatisfaction with fixed dental prostheses. This highlights the importance of clear communication between technicians and dentists. Dental students should learn to complete these forms during their training.

Quality and Means of Communication between Dentists and Laboratory Technicians in Fixed Prosthesis: A Study within Prosthetic Dental Technicians in Casablanca, Morocco

Quality and Means of Communication between Dentists and Laboratory Technicians in Fixed Prosthesis: A Study within Prosthetic Dental Technicians in Casablanca, Morocco

Communication of Aesthetic Data between Dentists and Laboratory Technicians in Fixed Prosthesis: A Study within Prosthetic Dental Technicians in Casablanca

Communication of Aesthetic Data between Dentists and Laboratory Technicians in Fixed Prosthesis: A Study within Prosthetic Dental Technicians in Casablanca

PERIODONTAL POCKET ASSOCIATED WITH FULL COVERAGE FIXED PROSTHESIS IN PATIENTS COMING TO REHMAT MEMORIAL DENTAL TEACHING HOSPITAL, ABBOTTABAD

PERIODONTAL POCKET ASSOCIATED WITH FULL COVERAGE FIXED PROSTHESIS IN PATIENTS COMING TO REHMAT MEMORIAL DENTAL TEACHING HOSPITAL, ABBOTTABAD

Online health school classes for dentist-orthopedist patients: the quality-of-life dynamics prospective cohort study

BACKGROUND: The COVID-19 pandemic has worsened the quality of life (QoL) of Russians, including patients of the orthopedic department of the Rostov-on-Don City Dental Polyclinic, who have installed fixed prosthesis (FP). The organization of online health school (HS) classes for them meant improving the situation by reorienting passive health saving towards active self-preserving behavior basing modern managerial medical and social technologies. Appropriate didactic material was developed and implemented in practice. Quantitative changes in QoL were recorded using the authors indicator system. The positive perception of online classes by patients has become an introduction to the lifelong system of health saving, which is based not only on improving the general or the health culture, but also on the privatization of health and all its components as material socially significant objects (SSO).&#x0D; OBJECTIVE: The purpose of this prospective medical and social cohort study was to confirm the positive dynamics of the QoL of prosthodontist patients after on-line classes at the HS using a process-approach-based quality of life scale (PABQoLS).&#x0D; MATERIALS AND METHODS: 24 patients who installed the FP attended from 6 to 9 lessons from the full course of the HS, which included 10 didactic units. Sociological control of QoL was carried out before the beginning of the work of the HS and after the end of the classes. The dynamics of the patients QoL, expressed through the afferentation gradient (GA), was correlated with the frequency of visits to the HS and reflected graphically using the construction of linear trends.&#x0D; RESULTS: The intensity of information flows from SSO within the cohort decreased by 56.1% (p 0.01), the positive balance of acquisitions increased by 3.5 times (t=0.9) after HS 3 months work. The highest significance (t=6.3) corresponded to a decrease in the flow of information about all losses by 64.6%. The correlation between the visits number (VN) and total AG (acquisitions losses) was 0.494 (p 0.05). The ratio of linear trends in the change in the pragmatic and affiliative components of the balance between acquisitions and losses was 10 to 1 in favor of the pragmatic component as the VN of the HS increased.&#x0D; CONCLUSION: The results of the medico-social study showed the potential of the PABQoLS as an objective and reliable tool for assessing the success of the HS classes in the direction of medicalization of prosthodontist patients.

Marginal Bone Loss around Implant-Retaining Overdentures versus Implant-Supported Fixed Prostheses 12-Month Follow-Up: A Retrospective Study.

Few studies have compared marginal bone loss (MBL) around implant-retaining overdentures (IODs) vs. implant-supported fixed prostheses (FPs). This study evaluated the mean MBL and radiographic bone-implant interface contact (r-BIIC) around IODs and implant-supported FPs. We also investigated osseointegration and MBL around non-submerged dental implants. We measured the changes between the MBL in the mesial and distal sites immediately after prosthetic delivery and after one year. The mean MBL and its changes in the IOD group were significantly higher. The mean percentage of r-BIIC was significantly higher in the FP group. MBL and its changes in males were significantly higher in the IOD group. The percentage of r-BIIC was significantly higher in the FP group. MBL in the lower site in the IOD group was significantly higher. Regarding MBL, the location of the implant was the only significant factor in the IOD group, while gender was the only significant predictor in the FP group. Regarding the r-BIIC percentage, gender was a significant factor in the FP group. We concluded that non-submerged dental implants restored with FPs and IODs maintained stable bone remodeling one year after prosthetic delivery.

Metal-Ceramic and Polyether Ether Ketone-Composite Maxillary Fixed Prosthesis Supported by Four Implants and Opposed by Removable Distal Extension Partial Dentures: A Comparative Study of Clinical and Prosthetic Outcomes.

This study aimed to evaluate clinical and prosthetic outcomes of metal-ceramic and polyether ether ketone (PEEK) fixed prostheses supported by four maxillary implants and opposed by distal extension removable partial dentures. Thirty participants with edentulous maxillary and distal extension mandibular ridges received four implants according to the All-on-4 treatment concept. The implants were immediately loaded by fixed acrylic prostheses. After 6 months, patients received either metal frameworks covered with porcelain teeth (metal group) or PEEK framework veneered with composite teeth (PEEK group). Plaque Index (PI), Gingival Index (GI), pocket depth (PD), implant stability quotient (ISQ), peri-implant marginal bone loss (MBL, using digital periapical radiographs), and implant survival were measured at baseline, 1 year, and 3 years. Prosthetic complications were measured on the patient and implant levels after 3 years. No implant failures occurred after insertion of the definitive prosthesis, and the implant survival rate was 100% in both groups. PI, GI, PD, ISQ, and MBL increased significantly with time. The most frequent complications were veneer fracture for the PEEK group and prosthetic screw loosening for the metal group. The metal group showed significantly higher PI, PD, and MBL than the PEEK group after 3 years. PEEK was associated with significantly higher veneer fracture than metal, while metal was associated with significantly higher prosthetic screw loosening than PEEK. Within the limitations of this study, the PEEK framework veneered with composite may be a suitable alternative to a metal porcelain prosthesis for All-on-4 implant rehabilitation in patients with maxillary edentulous arches opposed by distal extension mandibular ridges, as it was associated with favorable clinical and prosthetic outcomes after 3 years. However, it was associated with an increased rate of veneer or artificial gingiva fracture.

Comparative Analysis of Fracture Resistance between CAD/CAM Materials for Interim Fixed Prosthesis.

The aim of this study was to evaluate and compare the resistance to fracture of interim restorations obtained through additive techniques (3D impressions) and subtractive techniques (milling) using a computer-aided design and manufacture (CAD/CAM) system of a three-unit fixed dental prosthesis (FDP) to ascertain its clinical importance. (1) Materials and methods: In total, 40 samples were manufactured and divided into two groups (n = 20) using: (1) light-curing micro hybrid resin for temporary crowns and bridges (PriZma 3D Bio Prov, MarketechLabs, São Paulo, Brazil) for the rapid prototyping group (RP) and (2) a polymethylmethacrylate (PMMA) CAD/CAM disc (Vipiblock Trilux, VIPI, São Paulo, Brazil) for the computer-assisted milling (CC). The resistance to fracture was determined with a universal testing machine. (2) Results: The strength and the standard deviation for the computer-assisted milling group were higher (1663.57 ± 130.25 N) than the rapid prototyping (RP) group, which had lower values of (1437.74 ± 73.41 N). (3) Conclusions: The provisional restorations from the computer-assisted milling group showed a greater resistance to fracture than the provisional restorations obtained from the rapid prototyping group.

A Comparative Assessment of the Quality of Communication and Interactions between Dental Students and Dental Technicians for Fixed Prosthesis in Saudi Arabia

Introduction: Improving communication and collaboration between members of the dental team is important to the long term aim of improving the quality of dental care for patients. The aim of this cross‑sectional study was to compare and assess the communication and interactions between dental students and laboratory technicians for fixed prosthesis.&#x0D; Materials and Methods: The Survey based study was conducted online using a self-structured, pre-tested, closed ended with Face validity and content validity and consisting of 18 questions for dental students and 18 questions for dental technicians. Questionnaire was designed to compare and assess the quality of communication between dental students and laboratory technicians for fixed prosthodontics in Makkah region of Saudi Arabia. The data were tabulated and analyzed using SPSS version 21. Chi-square test was used to compare and assess the quality of communication between dental students and laboratory technicians for fixed prosthodontics. P-value of less than 0.05 was considered statistically significant.&#x0D; Results: In our survey around forty percent of technicians indicated that work authorization forms were complete and legible to provide the prosthesis. Regarding Communication with the dental technicians by the dental students, 38.5% (77) of them communicate by filling the authorization form, 38.5% (77) of them giving instructions to the delivery boy and 21% (42) of them giving instructions over the phone.&#x0D; Conclusion: Communication between dentist and dental students are very important and it is recommended to fill the authorization form for fixed prosthesis. Technicians should undergo training with designing of fixed prosthesis especially pontic design.

Precisão de impressões digitais e convencionais em Prótese Fixa sobre implante

Introdução: Impressões digitais ou convencionais precisas são essenciais na fabricação de Próteses fixas sobre Implante, porém não há consenso na literatura sobre qual técnica é melhor clinicamente. Objetivos: analisar as técnicas de impressão convencionais e digitais em Prótese Fixa sobre Implante, tais como os fatores: perda óssea, ajuste marginal, precisão dos moldes, tempo clínico e conhecimento de cirurgiões dentistas acerca das técnicas. Metodologia: Realizou-se uma revisão de literatura através da busca por artigos científicos dos últimos 10 anos, na base de dados Pubmed. Títulos, resumos e o acesso ao texto completo foram verificados e as pesquisas selecionadas de acordo com os critérios de inclusão. Resultados: Pesquisas indicam que não há diferenças significativas sobre perda óssea, ajuste marginal e precisão dos moldes com relação às impressões convencionais e digitais. Porém, profissionais não relatam preferência de técnica e a tecnologia digital apresenta procedimento com menor tempo clínico. Conclusão: O número de ensaios clínicos randomizados que testam fluxos de trabalho digitais em prótese fixa sobre implante é baixo. O conhecimento e manejo clínico do cirurgião dentista influencia na escolha das técnicas disponíveis.

Patient satisfaction and oral health-related quality of life (OHRQoL) of conventional denture, fixed prosthesis and milled bar overdenture for All-on-4 implant rehabilitation. A crossover study.

This study aimed to evaluate patient satisfaction and oral health-related quality of life (OHRQoL) of conventional denture, fixed prosthesis and milled bar overdenture for All-on-4 implant rehabilitation. Sixteen completely edentulous patients with ill-fitted mandibular dentures received new mandibular dentures (CDs). After 3months, 4 implants were installed according to the "All-on-4 concept" and immediately loaded with mandibular dentures. Three months after osseointegration, patients received either fixed prosthesis (FP) or milled bar overdenture (MB) in a crossover design. Patient satisfaction was evaluated using a visual analog scale (VAS). OHRQoL was evaluated using the OHIP-14. Questionnaires of VAS and OHIP-14 were measured 3months after wearing each of the following prostheses: CD, FP, and MB. For all questions of VAS and OHIP-14, CD showed significant lower satisfaction compared to FP and MB (p<.00025). FP recorded significant higher VAS scores than MB regarding retention and stability (p<.00007). MB recorded significant higher scores than FP regarding general satisfaction, comfort, ease of cleaning, and handling (p<.00008). Regarding OHIP-14, no significant differences in OHIP scores between FP and MB were observed for all domains of OHIP. "All-on-4" implant rehabilitation of edentulous mandible with FP and MB achieves high patient satisfaction and OHRQoL compared to CD. No significant difference in OHRQoL between FP and MB was observed. Regarding VAS, FP rated greater satisfaction with retention, stability, and chewing compared to MB. However, MB rated greater satisfaction with ease of cleaning and handling compared to FP.

Full arch fixed prostheses vs. full arch telescopic-retained retrievable prostheses both supported by implants and natural tooth abutments in periodontally treated patients: Results at 15 years.

BackgroundThe clinical outcome of full arch fixed prostheses vs. full arch telescopic-retained retrievable prostheses supported by implants and natural tooth abutments in periodontally treated patients has been reported by few studies, with controversial results. The objective of this study was to evaluate long-term (15 years) complications of abutment teeth and dental implants in periodontally treated patients, rehabilitated with full arch telescopic-retained retrievable prostheses (TRP)s vs. full arch fixed prostheses (FP)s supported by teeth and implants.Material and MethodsAfter active periodontal therapy (non-surgical and surgical), and implant placement (replacement of hopeless teeth and in edentulous sites), 18 patients were rehabilitated in both dental arches with full arch TRPs, and 17 patients were rehabilitated with full arch FPs. Patients were annually recalled for technical and/or biological complications monitoring.ResultsDuring the 15-year observation period, 29 of 164 (17.6%) implants failed in the TRP group and 26 of 152 (17.1 %) implants in the FP group. Due to progression of periodontal disease, endo-perio untreatable lesion and caries, 22 of 233 abutment teeth were extracted (8.1) % in the TRP group and 23 of 221 (10.4%) abutment teeth were extracted in the FP group. Difference in implant failures and abutment teeth loss between the two groups were found not statistically significant (p >0.05). Poisson regression analysis showed that in both groups, factors such as smoking habits, FMBS>20, number of pockets >6 mm, mean bone loss, and bone loss/age, contribute to tooth and implant failure (p<0.05).ConclusionsIn this clinical study, in periodontally treated patients, full arch telescopic-retained retrievable prostheses, and full arch fixed prosthesis, supported by teeth and implants presented comparable long-term results of tooth loss and implant failure, if regular periodontal therapy is implemented. Key words:Periodontal disease, implants, tooth-implant connection, telescopic prosthesis, fixed prosthesis.

A Technique for Reestablishing CR Position and Vertical Dimension of Occlusion during the Conversion of an Interim Fixed Prosthesis

A Technique for Reestablishing CR Position and Vertical Dimension of Occlusion during the Conversion of an Interim Fixed Prosthesis

Fixed Prosthodontics Failure in Students' Patients at King Saud University

Anticipating longevity as well as causes and trends of failure of dental fixed prosthesis (FP) are frequent demand by both clinicians and patients. Understanding such complications should help dentists plan the treatment of patients with a more reliable prognosis.

МОРФОСТРУКТУРНЫЕ ИЗМЕНЕНИЯ В ОПОРНЫХ ЗУБАХ НЕСЪЕМНЫХ ПРОТЕЗОВ ПРИ ПРИМЕНЕНИИ МЕТОДА ВИТАЛЬНОЙ АМПУТАЦИИ (В ЭКСПЕРИМЕНТЕ)

МОРФОСТРУКТУРНЫЕ ИЗМЕНЕНИЯ В ОПОРНЫХ ЗУБАХ НЕСЪЕМНЫХ ПРОТЕЗОВ ПРИ ПРИМЕНЕНИИ МЕТОДА ВИТАЛЬНОЙ АМПУТАЦИИ (В ЭКСПЕРИМЕНТЕ)

Viability and osteo/odontogenic differentiation of dental pulp stem cells in crosslinked chitosan-gelatin scaffolds

Event Abstract Back to Event Viability and osteo/odontogenic differentiation of dental pulp stem cells in crosslinked chitosan-gelatin scaffolds Maria Chatzinikolaidou1, 2, Athina Bakopoulou3 and Anthie Georgopoulou1 1 University of Crete, Materials Science and Technology, Greece 2 FORTH, IESL, Greece 3 Aristotle University of Thessaloniki, Department of Fixed Prosthesis and Implant Prosthodontics, Greece Introduction: Chitosan-gelatin scaffolds have been proposed due to their suitable mechanical, biodegradation and biocompatibility properties for different biomedical applications, including cartilage, skin and peripheral nerve regeneration [1][2]. Aim of this study was to investigate the potential of glutaraldehyde (GTA)-crosslinked chitosan-gelatin scaffolds to promote attachment and osteo/odontogenic differentiation of Dental Pulp Stem Cells (DPSCs) towards targeted dental tissue regeneration. Methods: Porous scaffolds were prepared by dissolving 2% (w/v) chitosan in a 1% (v/v) acetic acid solution and 2% (w/v) gelatin in ultrapure water at 50 oC. The two solutions were poured together to reach a composition of 40%-60% chitosan-gelatin and stirred for 2 h at 50 oC. GTA was then added to the mixture at 0.1% (w/v) under agitation at 50 oC until gelation. The gel mixture was then casted into 24-well plates and lyophilized for 24 h at -20 oC. Scaffolds were neutralized using 0.1 M NaOH and rinsed thoroughly with ultrapure water. DPSC cultures were established from third molars of young healthy donors and characterized for several stem cell (SC) markers with flow cytometry [3]. For in vitro cell culture, scaffolds were washed with PBS (3 times, 30 minutes each), followed by culture medium and again PBS (3 times, 30 minutes each). Finally, scaffolds were incubated with culture medium for 24 h at 37 oC. Each scaffold was then spotted with 100 μl complete culture medium (a-MEM containing 15% Fetal Bovine Serum-FBS, 100 mM L-ascorbic acid phosphate and antibiotics/antimycotics) containing 106 DPSCs (from passages 2-6). Spotted scaffolds were incubated for 2 h at 37 oC and 5% CO2 and then fully covered with 1.2 ml culture medium/well. Medium change was performed every 2 days. After 3, 7 and 14 days, live/dead fluorescent staining (Calcein M/PI staining) was used to assess cell viability by means of confocal microscopy. Moreover, total RNA was isolated after 7 and 14 days and real time PCR was performed to evaluate expression of osteo/odontogenic markers (BSP, DSPP, BMP-2, ALP, osterix, Runx2). The results were adjusted by amplification efficiency (LinRegPCR) and were normalized to the two most stable housekeeping genes evaluated by geNorm (SDHA and B2M). Results and Discussion: We prepared stable 40%-60% chitosan-gelatin scaffolds with interconnective pores and pore size of 100 μm. The established DPSC cultures were positive (>95% of the population) for SC markers, like CD90, CD73, CD29, CD81, CD49f, CD51, CD166, Nestin, Nanog, and partly for CD105, CD146, STRO-1, CD24, CD271, Oct3/4, SSEA-4. The 40%-60% chitosan-gelatin scaffolds could support high levels of cell attachment and viability over time. Real time PCR showed that cells grown inside the scaffolds presented a significant upregulation of DSPP [up to16-fold], BSP [up to 5.4-fold], BMP-2 [up to 2.6-fold], osteocalcin [up to 4.7-fold], osterix [up to 8.8-fold] and ALP [up to 1.5-fold]. Conclusion: These results indicate that the proposed 40%-60% chitosan-gelatin scaffolds support osteo/odontogenic differentiation of DPSCs even in absence of inductive media and therefore can be further considered for other properties, such as their ability to induce dentin or bone-like mineralized tissue formation to be used for targeted dental and periodontal tissue regeneration. This study was financially supported by the Hellenic General Secretariat for Research and Technology grant Aristeia II ‘Osteobiomimesis 3438’ and funded by the European Union (EU) and National Resources

Management of a Fractured Multiunit Maxillary Implant-Supported Fixed Prosthesis with Stripped Abutment Screws Using a Hybrid Cement-Retained and Screw-Retained Design: A 5-Year Follow-Up Clinical Report.

Fracture and loosening of implant-supported prostheses (ISPs) are complications encountered in routine dental practice. In the present report, management of a fractured maxillary full-arch cement-retained (CR) fixed dental prosthesis supported by six implants is presented. Due to stripped screws, complications were encountered that prevented the retrieval of two of the six abutment screws, which was managed by using a hybrid retention approach, whereby a single full-arch CR and screw-retained (SR) ISP was used. The techniques used to successfully retrieve four of the abutment screws are described. The final retention design involved a combination of three CR and three SR restorations, which offers the advantages of both retention designs.

A Comparative Analysis on Two Types of Oral Implants, Bone-Level and Tissue-Level, with Different Cantilever Lengths of Fixed Prosthesis.

Depending on esthetic, anatomical, and functional aspects, in implant-prosthetic restoration of a completely edentulous jaw, the selection of implant type is highly important; however, bone- and tissue-level implants and their stress distribution in bone have not yet been comparatively investigated. Hence, finite element analysis was used to study the influence of cantilever length in a fixed prosthesis on stress distribution in peri-implant bone around these two types of oral implants. A 3D edentulous mandible was modeled. In simulations, a framework with four posterior cantilever lengths and two types of implants, bone-level and tissue-level, was considered. A compressive load was applied to the distal regions of the cantilevers, and the von-Mises stress of peri-implant bone was investigated. The independent t-test and the Pearson correlation coefficient analyzed the results (α = 0.05). Stresses in the cortical bone around the bone-level implants were greater than those in the tissue-level implants with the same cantilever length. In addition, by extending the cantilever length, the stress values in peri-implant bone increased. Therefore, when the cantilever was at its maximum length, the maximum stress was in cortical bone and around the bone-level distal implants. The results of the present study indicate that treatment with tissue-level implants is potentially more advantageous than with bone-level implants for implant-supported fixed prostheses.