Effects of inter-implant distance and implant length on the response to frontal traumatic force of two anterior implants in an atrophic mandible: three-dimensional finite element analysis

Kan, Bahadır; Coşkunses, Fatih Mehmet; Mutlu, İbrahim; Meral, Deniz Gökçe

doi:10.1016/j.ijom.2015.03.002

Cited by 21 publications

(70 citation statements)

References 19 publications

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“…It is difficult to assess the force distribution on jaws and dental implants due to the heterogeneous structure of the bones and the inability to simulate the effects of the muscles and soft tissues on the bones [14, 22, 23]. However, with the improvement of FEA software, dental implants and effects of soft tissues and muscles of the human jaws have demonstrated in the present study compatible with those of clinical situations.…”

Section: Discussionsupporting

confidence: 50%

“…The ratio of a physician encountering a fractured atrophic mandible with dental implants has increased with the increase in use of dental implants [14]. Despite improvements in surgical fixation instruments, because of decreased vascularization, limited bone quality and quantity and absence of teeth in a patient with a fractured atrophic mandible, current procedures of fracture immobilization continues to be difficult and have been shown to be insufficient.…”

Section: Discussionmentioning

confidence: 99%

“…Mechanical properties of the materials that were simulated were taken from the literature [14–16] and are presented in Table 1. For standardization, the same overdentures were used by assuming that the material properties were the same for both the base part and artificial teeth.…”

Section: Methodsmentioning

confidence: 99%

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Evaluating the biomechanical effects of implant diameter in case of facial trauma to an edentulous atrophic mandible: a 3D finite element analysis

Ayalı

Bilginaylar

2017

Head Face Med

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BackgroundRehabilitation using an implant supported overdenture with two implants inserted in the interforaminal region is the easiest and currently accepted treatment modality to increase prosthetic stabilization and patient satisfaction in edentulous patients. The insertion of implants to the weakend mandibular bone decreases the strength of the bone and may lead to fractures either during or after implant placement. The aim of this three dimensional finite element analysis (3D FEA) study was to evaluate the biomechanical effects of implant diameter in case of facial trauma (2000 N) to an edentulous atrophic mandible with two implant supported overdenture.MethodsThree 3D FEA models were simulated; Model 1 (M1) is edentulous atrophic mandible, Model 2 (M2), 3.5x11.5 mm implants were inserted into lateral incisors area of same edentulous atrophic mandible, Model 3 (M3), 4.3x11.5 mm implants were inserted into lateral incisors area of same edentulous atrophic mandible.ResultsIn M1 and M2 highest stress levels were observed in condylar neck, whereas highest stress values in M3 were calculated in symphyseal area.ConclusionsTo reduce the risk of bone fracture and to preserve biomechanical behavior of the atrophic mandible from frontal traumatic loads, implants should be inserted monocortically into spongious bone of lateral incisors area.

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Section: Discussionsupporting

confidence: 50%

Section: Discussionmentioning

confidence: 99%

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Evaluating the biomechanical effects of implant diameter in case of facial trauma to an edentulous atrophic mandible: a 3D finite element analysis

Ayalı

Bilginaylar

2017

Head Face Med

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“…Therefore, the use of dental implants without bone grafting in cases with marginal bone defi ciencies of the mandible could be a viable treatment option. However, it has been reported that the possibility of dental implantrelated bone fracture should be considered in patients with atrophied mandibles 5,6) Moreover, an unbalanced occlusal force could increase the risk of fracture in the resected region of the mandible 7,8) . These reports indicate occlusal force by dental implants is traumatic force to possibly induce pathological fracture at the resected region in the mandible.…”

Section: Introductionmentioning

confidence: 99%

“…Finite element analysis (FEA) has been widely used to simulate mechanical stress on the bone and/or dental implant without performing invasive procedures 5,7,8) . Using this advantage, a FEA model of a totally edentulous mandible after tumor ablation was established to evaluate the influence of occlusion on the resected bone region in the present study.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Influence Factors to Reduce Mechanical Stress on the Marginally Resected Mandibular Bone Against Dental Implant-supported Occlusion

Tamai

Hirota

Iwai

et al. 2018

J. Hard Tissue Biology.

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This study aimed to evaluate the mechanical stress on resected mandibular bone against occlusal force using dental implant without any bone grafting by fi nite element analysis to reduce the risk of the bone fracture. A model of marginal resection of the symphysis of the mandible, in which the bone height of the region was 5, 10 or 15 mm, was prepared. Two, four, or six implant-supported fi xed prostheses (superstructure) or overdenture were set up in the model and loaded with 500N of occlusal force. The von Mises stress on the resected region was the highest when two implants were bilaterally placed at positions closest to the resected region. The von Mises stress value on the resected region could be high enough to induce the bone fracture. The mechanical stress was reduced up to < 50 % by adding implant at posterior position and connecting all implants. The presence of superstructure on 4 or 6 implants signifi cantly decreased the von Mises stress when the residual bone height was 10 or 15 mm. Use of 6 implants showed no signifi cant advantage at the stress reduction compared to use of 4 implants. When the residual bone height was 5 mm, reinforcement of the residual bone or bone graft should be considered to avoid the bone fracture. Although the present results were obtained under restrictive conditions, the number of implant, implant position, and prostheses style could reduce the von Mises stress and the risk of bone fracture on the resected region.

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Anterior Atrophic Mandible Restoration Using Cancellous Bone Block Allograft

Chaushu¹,

Chaushu²,

Lev³

et al. 2020

Bone Augmentation by Anatomical Region

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Effects of inter-implant distance and implant length on the response to frontal traumatic force of two anterior implants in an atrophic mandible: three-dimensional finite element analysis

Cited by 21 publications

References 19 publications

Evaluating the biomechanical effects of implant diameter in case of facial trauma to an edentulous atrophic mandible: a 3D finite element analysis

Evaluating the biomechanical effects of implant diameter in case of facial trauma to an edentulous atrophic mandible: a 3D finite element analysis

Evaluation of Influence Factors to Reduce Mechanical Stress on the Marginally Resected Mandibular Bone Against Dental Implant-supported Occlusion

Anterior Atrophic Mandible Restoration Using Cancellous Bone Block Allograft

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