Narrow diameter implant in posterior region

Mohamed, Jumshad B; Alam, Md. Nazish; Salman, Arif; Chandrasekaran, SC

doi:10.4103/0972-124x.106932

Cited by 5 publications

(4 citation statements)

References 4 publications

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“…Therefore, careful recommendation and technique must be used. Therefore, success rate is high, as shown in several studies [12][13][14] . The use of 3.3 mm implants has also been highly satisfactory in relation to prosthetic units, with no clinical difference when compared to 4.1 mm diameter prosthetic implants in the posterior region of the mandible [14][15][16][17] .…”

Section: Discussionmentioning

confidence: 97%

“…Thus, several studies focused on testing the increase of the diameter and/or length of the implant or alterations in the macrogeometry thereof 10,11 . Previous studies have shown that the diameter of an implant has significant effects on the generation of tension/deformation of the peri-implant osseous tissue 12,13 . Several authors have suggested that an increase in the diameter favors the biomechanical issue for peri-implant osseous maintenance [14][15][16] .…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the distribution of stress and deformation in single implant-supported prosthetic units in implants of different diameters

Mannarino

Júnior

Carvalho

et al. 2016

Rev. odontol. UNESP

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ResumoIntrodução: Quando os níveis de tensão e compressão gerados no sistema osso-implante excederem a capacidade óssea ocorre uma fadiga mecânica, resultando em colapso e perda da osseointegração. Objetivo: Analisar o comportamento biomecânico em próteses unitárias implanto-suportadas com implantes de diferentes diâmetros na região posterior de mandíbula. Material e método: Foram criados três modelos de elementos finitos de implantes cone-Morse de mesmo comprimento, variando-se o diâmetro: 3,3 mm, 4,1 mm e 4,8 mm. A localização do implante foi a região de primeiro molar inferior, com componente e coroa protética sobrejacentes. A mandíbula foi composta por osso cortical e medular. Foi criada malha refinada de 0,5 mm nas interfaces criticas a serem analisadas. O carregamento dos modelos foi realizado nos pontos de contatos oclusais, com uma carga oclusal de 400 N. Resultado: Tensão e deformação máximas ocorreram nas regiões cervicais dos implantes em todos os grupos, tanto na análise dos implantes e componentes quanto na análise do osso cortical. Quanto maior foi o diâmetro, menores foram tensão e deformação encontradas no implante. O grupo 3,3 mm apresentou a maior deformação em osso cortical periimplantar, tendo o grupo 4,1 mm a menor deformação, significantemente menor em relação ao grupo 4,8 mm. Conclusão: Apesar de o implante de maior diâmetro (4,8 mm) ter apresentado os menores valores de tensão e deformação, o grupo do implante de diâmetro intermediário (4,1 mm) mostrou menor taxa de deformação em osso cortical periimplantar. Portanto conclui-se que o implante de plataforma 4,1 mm apresentou-se mais efetivo biomecanicamente para manutenção óssea periimplantar.Descritores: Biomecânica; implante dental; análise por elementos finitos. AbstractIntroduction: When stress and strain levels in the bone-implant system exceed It's capacity, a mechanical fatigue occurs, resulting in collapse and loss of osseointegration. Objective: Analyze biomechanical behavior in single implant-supported prosthesis with implants of different diameters in the posterior mandible. Material and method: Three different finite element models of Cone-Morse implants with the same height were created, varying the diameter (3.3 mm, 4.1 mm and 4.8 mm). The mandibular first molar area was the location of the implant, with It´s component and overlying prosthetic crown. The jawbone was composed of cortical and cancellous bone. Refined mesh of 0.5 mm was created in the critical interfaces to be analyzed. The loading of the models was performed at the point of occlusal contact with an occlusal load of 400 N. Result: Maximum stress and strain occurred in the cervical regions of the implants in all groups, either in the implants or in components as well as in the analysis of cortical bone. The greater the diameter, the lower the stress and strain found in the implant. The 3.3 mm group had the highest strain in peri-implant cortical bone, and the 4.1 mm group had the smallest deformation, significantly lower than in the 4.8 mm group. Conclusion: Alth...

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Analysis of the distribution of stress and deformation in single implant-supported prosthetic units in implants of different diameters

Mannarino

Júnior

Carvalho

et al. 2016

Rev. odontol. UNESP

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“…Implants known as “narrow”, according to the literature, have the following diameters [mm]: 1.8, 2, 2.2, 2.4, 2.5, 3.0, 3.3, 3.5, and 3.75 [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 ]. Marc et al [ 38 ] suggested three categories of division of narrow implants:…”

Section: Discussionmentioning

confidence: 99%

Finite Element Analysis and Fatigue Test of INTEGRA Dental Implant System

Zieliński,

Lipa,

Piechaczek

et al. 2024

Materials

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The study involved numerical FEA (finite element analysis) of dental implants. Based on this, fatigue tests were conducted according to the PN-EN 14801 standard required for the certification of dental products. Thanks to the research methodology developed by the authors, it was possible to conduct a thorough analysis of the impact of external and internal factors such as material, geometry, loading, and assembly of the dental system on the achieved value of fatigue strength limit in the examined object. For this purpose, FEM studies were based on identifying potential sites of fatigue crack initiation in reference to the results of the test conducted on a real model. The actions described in the study helped in the final evaluation of the dental system design process named by the manufacturer as INTEGRA OPTIMA 3.35. The objective of the research was to identify potential sites for fatigue crack initiation in a selected dental system built on the INTEGRA OPTIMA 3.35 set. The material used in the research was titanium grade 4. A map of reduced von Mises stresses was used to search for potential fatigue crack areas. The research [loading] was conducted on two mutually perpendicular planes positioned in such a way that the edge intersecting the planes coincided with the axis of the system. The research indicated that the connecting screw showed the least sensitivity (stress change) to the change in the loading plane, while the value of preload has a significant impact on the achieved fatigue strength of the system. In contrast, the endosteal implant (root) and the prosthetic connector showed the greatest sensitivity to the change in the loading plane. The method of mounting [securing] the endosteal implant using a holder, despite meeting the standards, may contribute to generating excessive stress concentration in the threaded part. Observation of the prosthetic connector in the Optima 3.35 system, cyclically loaded with a force of F ≈ 300 N in the area of the upper hexagonal peg, revealed a fatigue fracture. The observed change in stress peak in the dental connector for two different force application surfaces shows that the positioning of the dental system (setting of the socket in relation to the force action plane) is significantly decisive in estimating the limited fatigue strength.

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“…However, studies on the diversity related to NDIs are still insufficient. The stability of posterior NDIs continues to be discussed [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Clinical outcome of narrow diameter dental implants: a 3-year retrospective study

Kim

Yoon

Pae

et al. 2023

Maxillofac Plast Reconstr Surg

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Background This study aimed to analyze the clinical outcome and complications of narrow-diameter dental implants (NDIs) (diameter ≤3.5 mm). Methods The 274 NDIs that met the selection criteria from 2013 to 2018 were included in the retrospective study, and the survival rates (SVR) were compared. Mechanical complications included screw loosening and fractures of the implant components, such as the implant fixture, abutment, and prosthesis. In addition, marginal bone loss (MBL) was measured immediately after surgery and 1 year after loading. Results The 3-year cumulative SVR was 92.4%. Nineteen fixtures failed during the follow-up. The failure rate was significantly higher (OR=4.573, p<0.05) in smokers and was significantly higher in osteoporosis patients (OR=3.420, p<0.05). The vertical and horizontal values of MBL were 0.33±0.32 mm and 0.18±0.17 mm, respectively. Mechanical complications included screw loosening (5.5%) and porcelain fracture (2.2%), but no fractures of the fixture or components were observed. The choice of titanium and zirconium (TiZr) alloy implant was significantly more frequent in the posterior region. Bone graft was significantly more frequently done in the anterior region. Conclusions According to the high SVR and stability of NDIs, the findings of the study suggest that NDIs may be a replacement for regular diameter dental implants (RDIs) and the use of TiZr alloy could extend the indication of NDIs. In the esthetic area, contour augmentation may be a reason for increasing the frequency of bone grafts.

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Narrow diameter implant in posterior region

Cited by 5 publications

References 4 publications

Analysis of the distribution of stress and deformation in single implant-supported prosthetic units in implants of different diameters

Analysis of the distribution of stress and deformation in single implant-supported prosthetic units in implants of different diameters

Finite Element Analysis and Fatigue Test of INTEGRA Dental Implant System

Clinical outcome of narrow diameter dental implants: a 3-year retrospective study

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