Short implants—an analysis of longitudinal studies

Neves, F.D. das; D, Fones; Bernardes, Sérgio Rocha; Prado, Célio Jesus do; Neto, Alfredo Júlio Fernandes

doi:10.1016/j.prosdent.2006.05.023

Cited by 116 publications

(200 citation statements)

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“…An implant length/diameter of 10 mm/3.75 mm was reported to be a potential threshold in determining the risk of unfavorable biomechanical behavior (20)(21)(22). From a biomechanical perspective, under vertical loading, minimum and maximum principal stress values around the implant neck were acceptable at every diameter for implants with a BIC ratio of 98.2%.…”

Section: Vertical Loadingmentioning

confidence: 99%

Three-dimensional finite element analysis of the effects of implant diameter and photofunctionalization on peri-implant stress

et al. 2017

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Previous finite element analyses of peri-implant stress assumed a bone-implant contact (BIC) ratio of 100%, even though the BIC ratio is known to be approximately 50% or less. However, the recent development of ultraviolet treatment of titanium immediately before use, known as photofunctionalization, significantly increased the BIC ratio, to 98.2%. We used a unique finite element analysis model that enabled us to examine the effects of different BIC ratios on peri-implant stress. A three-dimensional model was constructed under conditions of vertical or oblique loading, an implant diameter of 3.3, 3.75, or 5.0 mm, and a BIC ratio of 53.0% or 98.2%. Photofunctionalization and larger implant diameters were associated with reduced stress on surrounding tissues. Under vertical loading, photofunctionalization had a greater effect than increased implant diameter on stress reduction. Under oblique loading, increased implant diameter had a greater effect than photofunctionalization on stress reduction.

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Section: Vertical Loadingmentioning

confidence: 99%

Three-dimensional finite element analysis of the effects of implant diameter and photofunctionalization on peri-implant stress

et al. 2017

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“…The majority of the studies included in this review associate short and wide implants. 13 Previous biomechanical test showed that an increase of the implant diameter resulted in more homogeneous stress distribution and less stress concentration on the implants, 27 besides minimize complications, 25,26 and might guarantee the conservation of marginal peri-implant bone level. 34 Short-wide implants provides an increased implant-bone contact area and could make a short implant comparable to a longer implant with a smaller diameter.…”

Section: Discussionmentioning

confidence: 99%

“…The cumulative success of rough-surface implants is greater than that of machined-surface implants, especially for short implants. 21,23,24 Moreover, the increase in the diameter of implants could help minimize complications 12,25,26 since a large implant diameter might result in more homogeneous stress distribution and less stress concentration on the implants. 27 Most studies with short implants involve partially edentulous patients or those who require a single tooth replacement.…”

Section: Introductionmentioning

confidence: 99%

Short implants to support mandibular complete dentures - photoelastic analysis

2017

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This study evaluated the stress behavior around short implants in edentulous atrophic mandibles. Six groups included implants with two diameters regular and wide (4 and 5 mm) and three lengths (5, 7 and 9 mm) as follows: Ci9 (9 x 4 mm), Ci7 (7 x 4 mm), Ci5 (5 x 4 mm), Wi9 (9 x 5 mm), Wi7 (7 x 5 mm) and Wi5 (5 x 5 mm). These groups were compared to the control group CG (11 x 4 mm). The analysis was performed with the photoelastic method (n = 6). Each model comprised 4 implants with the same length and diameter connected by a chromium-cobalt bar that simulates a fixed denture. A 0.15 kg force was applied at the end of the cantilever (15 mm), and the maximum shear stress was recorded around the distal and subsequent implants. The stress values were determined, and the quantitative data (Fringes ® ) were submitted to statistical analysis with one-way ANOVA and the Dunnett test (p < 0.05). It was observed that the reduction in implant length increased stress values with a significant difference (p < 0.05) between CG Ci7 and Ci5, while the increase in implant diameter reduced the stress values without any differences found between short and long implants. Implants with 5 and 7 mm with regular diameter increased stress levels while short implants with larger diameters experienced similar stress to that of longer implants.

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“…Atualmente, os implantes de comprimento abaixo de 8 mm tornaram possível evitar que os pacientes passem por procedimentos cirúrgicos de alta complexidade e morbidade, tais como enxertos ósseos extensos, lateralização de nervo alveolar inferior e distrações osteogênicas (das Neves et al, 2006;Morand e Irinakis, 2007;Ogawa et al, 2010).…”

Section: Uso De Implantes Com Comprimento Reduzidounclassified

“…Os implantes denominados como curtos é um tanto quanto subjetivo (das Neves et al, 2006). Alguns autores definem implantes curtos como aqueles menores que 7 mm (Johns et al, 1992;Friberg et al, 2000).…”

Section: Uso De Implantes Com Comprimento Reduzidounclassified

Distribuição de tensões geradas por próteses esplintadas ou individualizadas sobre implantes com reabilitações em diferentes rebordos. Análise pelo método dos elementos finitos

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Short implants—an analysis of longitudinal studies

Cited by 116 publications

References 0 publications

Three-dimensional finite element analysis of the effects of implant diameter and photofunctionalization on peri-implant stress

Three-dimensional finite element analysis of the effects of implant diameter and photofunctionalization on peri-implant stress

Short implants to support mandibular complete dentures - photoelastic analysis

Distribuição de tensões geradas por próteses esplintadas ou individualizadas sobre implantes com reabilitações em diferentes rebordos. Análise pelo método dos elementos finitos

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