Influence of Diameter and Length of Implant on Early Dental Implant Failure

Olate, Sérgio; Lyrio, Mariana Camilo Negreiros; Moraes, Márcio de; Mazzonetto, Renato; Moreira, Roger William Fernandes

doi:10.1016/j.joms.2009.10.002

Cited by 130 publications

(114 citation statements)

References 16 publications

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“…Therefore, it should be the better choice in clinical situations. These results align with previous studies in the literature 12 . The correlation between the present biomechanical study, which shows unfavorable biomechanical conditions in group 3.3 and the clinical evidence previously reported suggest that, to increase the longevity and minimize the stress in peri-implant cortical bone in these narrow implants, it is recommended that a prosthetic crown be made with reduced buccal-lingual size, reducing occlusal interference 14 .…”

Section: Discussionsupporting

confidence: 93%

“…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: Discussionsupporting

confidence: 93%

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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show abstract

“…2 Despite the high survival rates found in these studies, few treatment protocols and indications have been investigated with NDIs compared to regular-diameter implants. For instance, only a few studies have evaluated the effectiveness of NDIs for the replacement of posterior teeth (molars/premolars) [6][7][8][9] and even fewer have assessed immediate provisionalization of NDIs. 10,11 Since NDIs seem to decrease the need for bone regeneration and large flap reflection, 2 the potential reduction of the incidence of surgical trauma is not well understood.…”

Section: And Seemmentioning

confidence: 99%

“…Several other clinical studies have investigated the clinical performance of implants with diameters between 3 mm and 3.5 mm supporting fixed partial dentures (FPDs), with survival rates from 93.8% to 100%. (7,8,11,(13)(14)(15)(16)(17)(18) Only a few studies have considered immediate provisionalization of NDIs, mainly in the anterior maxilla. (10,11) …”

Section: Implant Survival and Success Ratesmentioning

confidence: 99%

Less Invasive Surgical Procedures Using Narrow-Diameter Implants: A Prospective Study in 20 Consecutive Patients

Lecloux

Grenade

Bouhy

et al. 2015

Journal of Oral Implantology

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Narrow-diameter implants (NDIs) are increasingly produced and used in implant dentistry, especially since the introduction of new, more resistant materials. The objective of the present study was to evaluate the clinical performance of NDIs (3.3 mm) placed in thin alveolar crests. Twenty consecutive patients needing implant-supported fixed partial dentures and presenting an alveolar thickness ≤6 mm were treated with 1 or several NDIs. The surgical protocol was chosen according to the clinical situation: (1) flapless, (2) mini-cervical flap, (3) wide flap, (4) wide flap + guided bone regeneration (GBR). Implants were immediately loaded if the primary stability was higher than 20 Ncm. Implant survival and success, prosthodontic success rates, and patient-centered outcomes were evaluated after a follow-up period of 1 year. A total of 39 implants were placed in 20 patients, 12 and 27 implants in the anterior regions and in the posterior mandible, respectively. All but 1 implant reached an insertion torque higher than 20 Ncm and were loaded within 48 hours. The implant survival and success rates both reached 94.7%. The need for GBR was avoided in 60% of the implant sites. The mean peri-implant bone remodeling after a follow-up period of 1 year was −0.35 mm at the implant level. Peri-implant bone remodeling was higher in the posterior region, when the alveolar crest was thinner than 4 mm and GBR was required in addition. In conclusion, use of NDIs to restore partial edentation in sites with limited horizontal thickness seems to be an effective treatment option that prevented GBR in the majority of the present cases. Immediate provisionalization of NDIs does not seem to impair the results.

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“…A escolha do implante dependerá do grau de edentulismo do paciente, se parcial ou total, da quantidade de espaço disponível para a reconstrução protética, do volume ósseo residual do rebordo, do perfil de emergência e do tipo de oclusão que o paciente apresenta (OLATE et al,2010;DEGIDI et al,2008). Após a análise desses pontos poderá ser planejado o tipo de implante, tamanho e diâmetro para cada situação.…”

Section: Tamanho Reduzido E Diâmetro Estreito Dos Implantes Dentáriosunclassified

Avaliação histológica e histomorfométrica da energia superficial e molhabilidade em implantes de titânio grau IV e grau V: estudo experimental em coelhos

Miranda¹

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Influence of Diameter and Length of Implant on Early Dental Implant Failure

Cited by 130 publications

References 16 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

Less Invasive Surgical Procedures Using Narrow-Diameter Implants: A Prospective Study in 20 Consecutive Patients

Avaliação histológica e histomorfométrica da energia superficial e molhabilidade em implantes de titânio grau IV e grau V: estudo experimental em coelhos

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