Do Oblique Cyclic Loads Influence the Tensile Strength of Different Morse Taper Connection Abutments?

Michelon, Marcela Mendes Medeiros; Milanos, Estevão; Lourenço, Eduardo Veras; Telles, Daniel de Moraes

doi:10.11607/jomi.7506

Cited by 5 publications

(4 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Regarding the abutment detorque in group A, similar results were obtained in previous studies before and after application of loads [15]. However, in this previous study, it is important to point out that implants without an index were used, which corroborates the findings cited by Michelon and collaborators [30], that the presence of an index in the implants does not alter the friction values of this type of solid straight abutment. While, in the evaluation of the detorque of the fixation screws of groups B and C, both showed values below the initial torque applied: without the application of loads, the value of torque loss was small, unlike the values obtained after the application of loads, which shows a bigger torque loss.…”

Section: Plos Onesupporting

confidence: 90%

“…The friction in the conical connections is responsible for the stability of the abutments. In this way, other authors sought to assess whether the presence of an index on the implant could change the friction values between the abutment and the implant, as the index reduces the extent of contact between the parts, and the results of this study showed that there was no reduction in friction on the tested IA sets [30]. In our study, all implants used had an index, and the intention was to assess whether the presence of an index on the abutment could have a negative effect on the stability of the abutments.…”

Section: Plos Onementioning

confidence: 99%

See 1 more Smart Citation

Does the index in Morse taper connection affect the abutment stability? An in vitro experimental study

Goyeneche,

Cortellari,

Rodriguez

et al. 2024

PLoS ONE

View full text Add to dashboard Cite

The present study compared three different implant and abutment sets of type Morse taper (MT) connection, with- and without-index, were analyzed regarding their mechanical behavior without and with cyclic load application simulating the masticatory function. Ninety implant and abutment (IA) sets were used in the present study, divided into three groups (n = 30 samples per group): Group A, Ideale solid straight abutment (one piece) without index; Group B, Ideale abutment with an angle of 30-degree (two pieces) without index; Group C, Ideale abutment with an angle of 30-degree (two pieces) with index. The abutment stability quotient (ASQ) values, detorque value and rotation angle were measured before and after the cycling load. Twenty IA sets of each group were submitted to mechanical load at 360,000 cycles. The ASQ without load were 64.7 ± 2.49 for the group A, 60.2 ± 2.64 for the group B, 54.4 ± 3.27 for the group C; With load were 66.1 ± 5.20 for the group A, 58.5 ± 6.14 for the group B, 58.9 ± 2.99 for the group C. Detorque values were lower in groups B and C compared to group A (p < 0.05). In conclusion, the presence of the index did not influence the stability values. However, solid straight abutments (group A) showed higher values of stability compared to groups of angled abutments (groups B and C).

show abstract

Section: Plos Onesupporting

confidence: 90%

Section: Plos Onementioning

confidence: 99%

Does the index in Morse taper connection affect the abutment stability? An in vitro experimental study

Goyeneche,

Cortellari,

Rodriguez

et al. 2024

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…Villarinho et al investigated the effect of a positioning index on the abutment screw preload values of Morse taper connection implants, and it was concluded that indexed tapered abutments for single-crown restorations might represent greater biomechanical risk under function [24]. The influence of the prosthetic index on removal torque and tensile removal force of Morse taper connection abutments [16,25], as well as bacterial microleakage of Morse taper implants [26], were evaluated through in vitro studies.…”

Section: Introductionmentioning

confidence: 99%

Effect of the prosthetic index on stress distribution in Morse taper connection implant system and peri-implant bone: a 3D finite element analysis

et al. 2022

View full text Add to dashboard Cite

Background The combination of a prosthetic index with Morse taper connection was developed, with the purpose of making prosthetic procedures more precise. However, the presence of the index may compromise the mechanical performance of the abutment. The aim of this study is to evaluate the effect of prosthetic index on stress distribution in implant–abutment-screw system and peri-implant bone by using the 3D finite element methodology. Methods Two commercial dental implant systems with different implant–abutment connections were used: the Morse taper connection with platform switching (MT-PS) implant system and the internal hex connection with platform matching (IH-PM) implant system. Meanwhile, there are two different designs of Morse taper connection abutment, namely, abutments with or without index. Consequently, three different models were developed and evaluated: (1) MT-PS indexed, (2) MT-PS non-indexed, and (3) IH-PM. These models were inserted into a bone block. Vertical and oblique forces of 100 N were applied to each abutment to simulate occlusal loadings. Results For the MT-PS implant system, the maximum stress was always concentrated in the abutment neck under both vertical and oblique loading. Moreover, the maximum von Mises stress in the neck of the MT-PS abutment with index even exceed the yield strength of titanium alloy under the oblique loading. For the IH-PM implant system, however, the maximum stress was always located at the implant. Additionally, the MT-PS implant system has a significantly higher stress level in the abutment neck and a lower stress level around the peri-implant bone compared to the IH-PM implant system. The combined average maximum stress from vertical and oblique loads is 2.04 times higher in the MT-PS indexed model, and 1.82 times for the MT-PS non-indexed model than that of the IH-PM model. Conclusions MT-PS with index will cause higher stress concentration on the abutment neck than that of without index, which is more prone to mechanical complications. Nevertheless, MT-PS decreases stress within cancellous bone and may contribute to limiting crestal bone resorption.

show abstract

“…Com o intuito de melhorar a performance da interface protética e facilitar a reabilitação foi adicionado à conexão interna cônica o sistema de indexação (107,108) . No entanto essas mudanças podem afetar o comportamento biomecânico da conexão, reduzindo a área de contato entre pilar e implante e por consequência poderá diminuir a estabilidade da conexão (108)(109)(110) . À vista disso, Villarinho et al (109) , De Oliveira et al (108) e…”

Section: Lista De Figurasunclassified

Avaliação biomecânica em novo desenho de implante cone Morse

Pereira¹

View full text Add to dashboard Cite

Por se fazer presente em todos os momentos, pelas oportunidades concedidas, por guiar minhas escolhas e mostrar que sou capaz. Pela força, coragem e fé que me impulsiona a seguir em busca dos meus sonhos. A Ele dedico todas as minhas conquistas e vitórias. Aos meus paisCoriolano Gomes Pereira e Iraci Pereira Barbosa, pelo incentivo constante, amor, cuidado, confiança e por terem cultivado em mim valores e bons princípios morais e éticos. Obrigado por acreditarem nos meus sonhos, pelo apoio incondicional, pelas orações e suporte emocional, e por me permitir desbravar o mundo. Sem vocês jamais teria chegado até aqui. Um parágrafo é pouco para descrever a minha gratidão frente a tudo que vocês fazem por mim. Amo muito vocês! Aos meus irmãos Jota, Nana, Cido e Ninha, por todo carinho, atenção e companheirismo. Obrigado por entenderem a minha constante ausência e por sonhar junto comigo por dias melhores. Ao meu esposo João Rafael, por estar ao meu lado sempre. Por acreditar em mim, quando nem eu mesma acreditei, por me dá força e ser minha força nos momentos difíceis. Por segurar toda a barra em casa sozinho, por nunca me cobrar por estar ausente, por sempre me receber de braços abertos. Cada conquista alcançada era motivo de felicidade e orgulho para você. Essa conquista também é sua! Aos meus familiares Minhas avós Alexandrina e Manoelina, meus tios, primos, minha sogra pelo amor concedido, abraço verdadeiro, sorriso sincero e força pra seguir em frente. Muito obrigada por acreditarem em meu potencial! A vocês, amada família, dedico este trabalho! Agradecimentos Especiais À minha orientadora, Profª. Drª Renata Cristina Ferracioli, agradeço pela oportunidade de trabalharmos juntas, por todo conhecimento científico e conselhos transmitidos, compreensão e paciência com minhas limitações e por sempre estar disponível em qualquer situação. Obrigada pela confiança depositada e por ser sempre tão tranquila, tornando os momentos mais difíceis em algo alcançável. Obrigada por ser sempre tão gentil e cuidadosa, mesmo quando era necessário corrigir e repreender. Espero ser uma professora como você! Grata por tudo! Ao Prof. Dr. Ricardo Faria Ribeiro, obrigada pela confiança em mim depositada, pelo carinho e atenção durante toda a pós-graduação. Obrigada por todo o conhecimento transmitido, conselhos dados e pela disponibilidade em me ajudar sempre que possível. Com você aprendi que foco, responsabilidade e dedicação ao trabalho são essenciais para a formação de um profissional de excelência. Tenho muito orgulho de ter sido parte de sua equipe! Muito obrigada! Ao Prof. Armando Prado, obrigada por ter visto em mim algo que eu não enxergava. Obrigada por abrir a porta da docência na minha vida, sem esse incentivo eu jamais teria descoberto esse dom e essa sede pela ciência. Obrigada por me mostrar o mundo da Reabilitação Oral! Obrigada por todos os ensinamentos e pelo incentivo! Continuarei seguindo seus passos!!! Grata por tudo!!! AgradecimentosA Deus, minha fonte inesgotável de força, pelas oportunidades e bênçãos concedidas.À ...

show abstract

Do Oblique Cyclic Loads Influence the Tensile Strength of Different Morse Taper Connection Abutments?

Cited by 5 publications

References 8 publications

Does the index in Morse taper connection affect the abutment stability? An in vitro experimental study

Does the index in Morse taper connection affect the abutment stability? An in vitro experimental study

Effect of the prosthetic index on stress distribution in Morse taper connection implant system and peri-implant bone: a 3D finite element analysis

Avaliação biomecânica em novo desenho de implante cone Morse

Contact Info

Product

Resources

About