Initial stability and bone strain evaluation of the immediately loaded dental implant: an <i>in vitro</i> model study

Huang, Heng‐Li; Chang, Yin-Yu; Lin, Dao‐Hong; Li, Yufen; Chen, Kuan-Ting; Hsu, Jui‐Ting

doi:10.1111/j.1600-0501.2010.01983.x

Cited by 57 publications

(51 citation statements)

References 35 publications

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“…However, this difference did not cause a significant difference in bone stress values at these 2 positions ( Table 4). In addition, our results are in agreement with those of Huang et al [36], who reported that a cortical bone thickness of 2.0 mm was sufficient to stabilize the implant.…”

Section: Discussionsupporting

confidence: 93%

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Three-Dimensional Finite Elemental Analysis of Bone Stress near an Implant Placed at the Border between Mandible and Fibular Graft in Mandibular Reconstruction

Ken¹,

Tachikawa²,

Kasugai³

2015

OJRM

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Purpose: The aim of the present study was to use finite elemental analysis (FEA) to evaluate bone stress near an implant placed at the border between the mandible and fibular graft in mandibular reconstruction. Materials and Methods: A fibular model (FM) and transplantation model (TM) were constructed for FEA. In TM, mandible was on the mesial side and the fibular graft was on the distal side. The implant was positioned at the center of both bone models. In TM, it was placed on the border between the mandible and fibular graft. A 10-mm implant was used in the monocortical model and a 15-mm implant was used in the bicortical model. The loading force was set at 100 N, the angle was set at 90˚, and the loading position was set as center, mesial, or distal on the upper surface of the prosthesis. Von Mises equivalent stress values of the bone near the implant collar and apex at the middle line between buccal and lingual side were measured. Results: In all models, stress values were significantly lower with center loading than with distal loading and mesial loading. In center loading, the stress values were significantly lower in the bicortical model than in the monocortical model. There were no significant differences in stress values between FM and TM in all conditions. Conclusions: Bone stress was least with the center loading position, which was further decreased by bicortical fixation. There was no increase in mechanical stress associated with placing an implant at the border between the mandible and the fibular graft.

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Section: Discussionsupporting

confidence: 93%

“…Huang et al [36] and Haibin et al [37] reported that bone stress levels were increased when the cortical bone is thin. In implant treatment, loading stress was concentrated on the thin cortical bone, which resulted in implant loss [38].…”

Section: Discussionmentioning

confidence: 99%

Three-Dimensional Finite Elemental Analysis of Bone Stress near an Implant Placed at the Border between Mandible and Fibular Graft in Mandibular Reconstruction

Ken¹,

Tachikawa²,

Kasugai³

2015

OJRM

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“…This mechanical interlocking is variably influenced by the implant geometry and surface micrometer level topography, as well as the implant osteotomy site dimensions, and regulate the distribution of strain applied to the hard tissue in proximity with the implant [21,27,28]. Strain is directly related to bone-implant interfacial stress and frictional force, and is clinically expressed as insertion torque [20,25,29].…”

Section: The Interfacial Remodeling (Tight Fit) Healing Pathwaymentioning

confidence: 99%

Osseointegration: Hierarchical designing encompassing the macrometer, micrometer, and nanometer length scales

et al. 2015

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“…The assessment of cortical bone thickness of the outer layer and the cancellous bone density by CBCT has proved beneficial for the patients. 5 Considering all these factors, this study aimed at presurgical measurement of crestal bone thickness at various implant sites using CBCT images.…”

Section: 5005/jp-journals-10024-2127mentioning

confidence: 99%

Measurement of Crestal Cortical Bone Thickness at Implant Site: A Cone Beam Computed Tomography Study

Gupta¹,

Rathee²,

Agarwal³

et al. 2017

The Journal of Contemporary Dental Practice

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Aim: Dental implants have emerged as a new treatment modality for the majority of patients complaining of missing teeth. Bone quantity and bone quality are among various factors which ensure the longevity of dental implant in the patient's mouth. The assessment of cortical bone thickness of the outer layer and the cancellous bone density by cone beam computed tomography (CBCT) has proved beneficial for the patient. This study aimed at presurgical measurement of crestal bone thickness at various implant sites using CBCT images. Materials and methods:This study was conducted in the Department of Prosthodontics in the year 2015. It included 218 patients who wanted to replace missing teeth. Patients were subjected to CBCT scan using NewTom CBCT machine operating at 120 kVp and 5 mA with a resolution of 0.1 × 0.1 × 0.1 mm 3 . New Net Technologies (NNT) software with a slice thickness of 0.1 mm was used in this study. A total of 780 implant sites were identified on images of 218 patients. In all patients, the measurement of crestal bone thickness in the region of implant site was performed with NNT software. The buccolingual measurement of crestal bone was done in cross sections obtained after CBCT. Results:Out of 218 patients, males were 110 and females were 108. The difference between gender was nonsignificant (p > 0.05). Out of 780 implant sites, 370 were in the maxilla and 410 were in mandible. The difference was nonsignificant (p > 0.05). Out of 780 implant sites, 210 were in anterior maxilla and 160 were in the posterior maxilla. Totally, 235 sites were in anterior mandible and 175 were in the posterior mandible. The distribution was nonsignificant (p = 0.15). The mean crestal bone thickness in anterior maxilla was 0.82 mm, in posterior maxilla was 0.76 mm, in anterior mandible was 1.08 mm, and in posterior mandible was 1.18 mm. The difference among regions was significant (p = 0.01). Measurement of Crestal Conclusion:The highest thickness of cortical bone was observed in posterior mandible followed by anterior mandible, anterior maxilla, and posterior maxilla. Thus, considering the less cortical thickness in the posterior maxillary region, the implant placement should be done with proper attention.Clinical significance: Dental implant is the need of the hour. It is beneficial to patients in terms of longer survival rates. With CBCT, all measurements, such as bone quality and quantity have become easy because of three-dimensional nature. This has proved to be beneficial in the analysis of cortical bone thickness as well as measuring the distance from anatomical structures.

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Initial stability and bone strain evaluation of the immediately loaded dental implant: an in vitro model study

Cited by 57 publications

References 35 publications

Three-Dimensional Finite Elemental Analysis of Bone Stress near an Implant Placed at the Border between Mandible and Fibular Graft in Mandibular Reconstruction

Three-Dimensional Finite Elemental Analysis of Bone Stress near an Implant Placed at the Border between Mandible and Fibular Graft in Mandibular Reconstruction

Osseointegration: Hierarchical designing encompassing the macrometer, micrometer, and nanometer length scales

Measurement of Crestal Cortical Bone Thickness at Implant Site: A Cone Beam Computed Tomography Study

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